Siemens HB 151.50 B Technical data

VVF53..
VXF53..
Acvatix™
Valves VVF..,VXF..
Basic Documentation
CE1P4030en
12.09.2011
Building Technologies
Siemens Switzerland Ltd.
Industry Sector
Building Technologies Division
Gubelstrasse 22
6301 Zug
Switzerland
Phone +41 41-724 24 24
www.siemens.com/sbt
© 2011 Siemens Switzerland Ltd.
Subject to change
2 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
CE1P4030en
12.09.2011
Table of contents
1
About this document ..............................................................................5
1.1
Navigation .................................................................................................5
1.2
Revision history.........................................................................................5
1.3
Reference documents ...............................................................................5
1.3.1
2- and 3-port valves with flanged connections ....................................5
1.4
1.4.1
1.4.2
1.4.3
1.4.4
Before you start.........................................................................................5
Trademarks ..........................................................................................5
Copyright..............................................................................................6
Quality assurance ................................................................................6
Document use / request to the reader .................................................6
1.5
Validity of documentation ..........................................................................6
2
Engineering .............................................................................................7
2.1
2.1.1
2.1.2
2.1.3
2.2
Product description ...................................................................................7
2-port valves ........................................................................................7
3-port valves ........................................................................................7
Type plate ............................................................................................8
Use............................................................................................................9
2.2.1
Compatibility with medium and temperature ranges ...........................9
2.2.2
Fields of use.......................................................................................10
2.3
2.3.1
2.3.2
2.3.3
2.4
Type summary and equipment combinations ......................................... 11
2-port valves with flanged connections.............................................. 11
3-port valves with flanged connections..............................................14
Overview of actuators ........................................................................15
Ordering ..................................................................................................16
2.5
2.5.1
2.5.2
2.5.3
Accessories.............................................................................................16
Electrical accessories ........................................................................16
Mechanical accessories.....................................................................17
Adapters.............................................................................................17
2.6.1
2.6.2
2.6.3
Product replacement...............................................................................18
2-port valves ......................................................................................18
3-port valves ......................................................................................19
Accessories........................................................................................19
2.6
2.7
Spare parts ..............................................................................................20
2.8
Valve sizing for fluids (water, heat transfer oil) .......................................21
2.8.1
Procedure for valve sizing .................................................................21
2.8.2
Flow chart ..........................................................................................22
2.8.3
Impact of fluid properties on valve sizing...........................................23
2.8.3.1
Density ρ ......................................................................................23
2.8.3.2
Specific heat capacity c................................................................23
2.8.3.3
Kinematic viscosity ν....................................................................24
2.8.4
Influencing factors with selected groups of fluids ..............................25
2.8.5
Rangeability Sv, minimum controllable output Qmin ............................25
2.9
Sizing valves for steam ...........................................................................26
2.10
Calculation examples for water, heat transfer oil and steam ..................29
2.10.1
Example for water: Heater with pressure and variable volumetric flow29
2.10.2
Example for water: Heater with low differential pressure without main
pump ..................................................................................................30
2.10.3
Example for heat transfer oil..............................................................31
2.10.4
Example for steam .............................................................................33
3 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Table of contents
CE1P4030en
12.09.2011
2.11
Valve characteristics ...............................................................................35
2.11.1
2-port valves.......................................................................................35
2.11.2
3-port valves.......................................................................................35
2.12
Operating pressure and medium temperature ........................................36
2.12.1
ISO 7005 and EN 1092 – a comparison ............................................36
2.12.2
PN 16 valves with flanged connections .............................................37
2.12.3
PN 25 valves with flanged connections .............................................38
2.13
Cavitation ................................................................................................39
2.14
Medium quality and medium treatment...................................................40
2.14.1
Water..................................................................................................40
2.14.2
Water with antifreeze .........................................................................41
2.14.3
Deionized, demineralized water and super-clean water ....................42
2.14.4
Heat transfer oil (thermal oil)..............................................................42
2.15
Engineering notes ...................................................................................43
2.15.1
Strainer (dirt trap) ...............................................................................43
2.15.2
Avoiding flow noise ............................................................................44
2.15.3
Avoiding false circulation ...................................................................44
2.15.4
Thermal insulation..............................................................................45
2.16
Warranty..................................................................................................46
3
Handling .................................................................................................47
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
Mounting and installation ........................................................................47
Mounting positions .............................................................................47
Direction of flow for fluids and steam.................................................47
Flanges ..............................................................................................48
Stem heating element ASZ6.6 ...........................................................50
Thermal insulation..............................................................................50
3.2.1
3.2.2
Commissioning and maintenance...........................................................51
Commissioning...................................................................................51
Maintenance.......................................................................................51
3.2
3.3
Disposal...................................................................................................51
4
Functions and control ..........................................................................52
4.1
Selection of acting direction and valve characteristic .............................52
4.2
Calibration ...............................................................................................53
4.3
Technical and mechanical design ...........................................................53
Plug stop ............................................................................................54
Valve stem, valve neck, coupling .......................................................54
Converting a 2-port to a 3-port valve .................................................54
Converting a 3-port to a 2-port valve .................................................54
Flange types.......................................................................................55
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
5
Technical data........................................................................................56
6
Dimensions ............................................................................................58
7
Revision numbers .................................................................................60
8
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.1.7
Addendum..............................................................................................61
Abbreviations .....................................................................................61
Important formulas .............................................................................62
Valve-related glossary........................................................................62
Hydraulics-related glossary................................................................63
Media-related glossary.......................................................................64
Trade names ......................................................................................64
Overview of antifreeze and brines used in the trade .........................64
4 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Table of contents
CE1P4030en
12.09.2011
1
About this document
1.1
Navigation
You will find information about a specific valve throughout the document. The
structure of chapters 2 to 4 is as follows:
2 Engineering
3 Handling
device oriented
process oriented
3.1 Mounting and installation
3.2 Commissioning and maintenance
3.3 ...
4 Functions and control
assembly oriented
4.1 Selection of acting direction and valve characteristic
4.2 Calibration
4.3 ...
1.2
Revision history
Revision
First edition
Date
12.09.2011
Changes
Chapter
-
-
1.3
Reference documents
1.3.1
2- and 3-port valves with flanged connections
VVF43..
VXF43..
VVF53..
VXF53..
Data Sheet
N4404
N4405
Mounting Instructions
M4030
M4030
CE Declaration of Conformity (PED)
T4030
T4030
Environmental Declaration
E4404
E4405
Type of document
1.4
Before you start
1.4.1
Trademarks
Page(s)
-
The table below lists the trademarks used in this document and their legal owners.
The use of trademarks is subject to international and domestic provisions of the
law.
Trademarks
TM
Acvatix
Legal owner
Siemens AG
All product names listed in the table are registered (®) or not registered (™)
trademarks of the owner listed in the table. We forgo the labeling (e.g. using the
symbols ® and ™) of trademarks for the purposes of legibility based on the
reference in this section.
5 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
About this document
CE1P4030en
12.09.2011
1.4.2
Copyright
This document may be duplicated and distributed only with the express permission
of Siemens, and may be passed only to authorized persons or companies with the
required technical knowledge.
1.4.3
Quality assurance
The document was prepared with great care. Please make sure that you are aware
of the latest document revision date.
 The contents of all documents are checked at regular intervals
 Any corrections necessary are included in subsequent versions
 Documents are automatically amended as a consequence of modifications and
corrections to the products described
If you find lack of clarity while using this document, or if you have any criticisms or
suggestions, please get in touch with your local contact person in the nearest
Siemens branch office. For addresses of the Siemens branch offices, please visit
www.siemens.com/acvatix.
1.4.4
Document use / request to the reader
Before using our products, it is important that you read the documents supplied
with or ordered at the same time as the products (equipment, applications, tools,
etc.) carefully and in full.
We assume that persons using our products and documents are authorized and
trained appropriately and have the technical knowledge required to use our
products as intended.
More information on the products and applications is available:
 On the intranet (Siemens employees only) at
https://workspace.sbt.siemens.com/content/00001123/default.aspx.
 From the Siemens branch office near you or from your system supplier
 From the Support Team at headquarters (fieldsupport-zug.ch.sbt@siemens.com)
if there is no local point of contact
Siemens assumes no liability to the extent allowed under the law for any losses
resulting from a failure to comply with the aforementioned points or for improper
compliance of the same.
1.5
Validity of documentation
This document shall serve as a knowledge base. In addition to basic knowledge, it
provides general technical information about valves used in HVAC plants.
For project engineers, electrical HVAC planners, system integrators, and service
engineers, the document contains all information required for planning,
engineering, correct installation, commissioning, and servicing.
6 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
About this document
CE1P4030en
12.09.2011
2
Engineering
2.1
Product description
The large-stroke valve line consists of 2-port and 3-port valves.
2.1.1
2-port valves
Type of valve
Product number
High-performance valves for
higher medium temperatures
VVF43.., VVF53..
Connections
Flanged
Page
A
Valve stem
54
B
Stem sealing gland
19
C
Valve neck
54
D
Type plate
8
E1
Flange
Connections
55
F1
2.1.2
Blank flange
3-port valves
Type of valve
High-performance valves for
higher medium temperatures
Product number
Connections
VXF43.., VXF53..
Flanged
Page
A
Valve stem
54
B
Stem sealing gland
19
C
Valve neck
54
D
Type plate
8
E1
Flange
Connections
55
7 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.1.3
Type plate
1
2
2-port valves
3
4
5
6
7
8
9
10
11
Flow direction for fluids
Flow direction for steam
Port markings are cast integral
Product number
Stock number
Nominal pressure class
Nominal size
kvs value
Serial number
Country of origin
CE mark conforming to PED 97/23/EC.
Applies only to valves of category I or II
conforming to PED 97/23/EC
Notified body number for monitoring
production centers as per module A1 of
PED 97/23/EC. Applies only to valves of
category II
Fluids
Steam
QR code (Siemens in-house usage)
1
Flow direction for fluids
Port markings are cast integral
2 Product number
3 Stock number
4 Nominal pressure class
5 Nominal size
6 kvs value
7 Serial number
8 Country of origin
9 CE mark conforming to PED 97/23/EC.
Applies only to valves of category I or II
conforming to PED 97/23/EC
10 Notified body number for monitoring
production centers as per module A1 of
PED 97/23/EC. Applies only to valves of
category II
3-port valves
QR code (Siemens in-house usage)
8 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.2
Use
The valves are used as control or shutoff valves in heating, ventilation and air
conditioning plants for the production and distribution of heat or cooling energy, as
well as in district heating plants and in steam applications.
All 3-port valves can be used as mixing valves (preferred use) or diverting valves.
For use in closed or open hydraulic circuits, observe chapter "Cavitation", page 39.
2.2.1
Compatibility with medium and temperature ranges
Type of medium
1)
Version
Product number
H
Notes
Type of connection
Cold water
Low-temperature hot water
3)
High-temperature hot water
Water with antifreeze
Cooling water
Brines
4)
Saturated steam
Superheated steam
5)
Heat transfer oils
Super-clean water
(Demineralized and deionized
water)
2)
VXF53..
VVF53..
1
1
130
150
180
-5
-10
-20
1
-5
-10
-20
100
150
200
120
150
20
25
130
150
180
220
150
150
150
25
150
150
150
150
200
220
150
220
220
F
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
F
■
■
■
■
■
■
■
■
■
■
■
■
F
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
F
■
■
■
■
■
■
■
■
■
■
■
■
■
1
150
-
-
-
-
1)
2)
3)
4)
5)
Note
Tmax
[°C]
VXF43..
Tmin
[°C]
VVF43..
Temperature
range
When using V..F43/53 for medium temperatures below -5 °C,
the stem sealing gland must be replaced
When using V..F43/53 for medium temperatures below -5 °C,
the stem sealing gland must be replaced
On the basis of mineral oil
Version: H = high-performance
Type of connection: F = flanged
Differentiation due to saturated steam curve. For details, refer to chapter 2.12, page 36
Open circuits
Min. dryness at inlet: 0.98
For a detailed list of the permissible types of antifreeze and brines, refer to "8.1.7
Overview of antifreeze and brines used in the trade", page 64. The notes given
under "2.14 Medium quality and medium treatment", page 40 must also be
observed.
9 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.2.2
Fields of use
Fields of use
Product number
Generation
Boiler plants
District heating plants
Chiller plants
3)
Cooling towers
Distribution
Heating groups
Air handling units
VVF53..
2)
VVF43..
Type of connection
2-port valves
H
VXF53..
1)
VXF43..
Version
3-port valves
H
F
F
F
F
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
1)
Version: H = high-performance
Type of connection: F = flanged
3)
Open circuits
2)
10 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.3
Type summary and equipment combinations
2.3.1
2-port valves with flanged connections
Stroke
PN 16
1)
Actuators
2)
SAX..
2)
SKD..
SKB..
SKC..
Data Sheet
N4501
N4561
N4564
N4566
20 mm
Positioning force
800 N
2)
Data Sheet
N4404
DN
kvs
SAX..
Δps
Δpmax
2)
SKD..
Δps
Δpmax
3
-20…220 °C
3)
VVF53.15-..
3)
VVF53.15-..
3)
VVF53.20-..
3)
VVF53.25-..
3)
VVF53.32-..
3)
VVF53.40-..
3)
VVF53.50-..
Stock number
S55208-..
S55208-..
S55208-..
S55208-..
S55208-..
S55208-..
S55208-..
15
15
20
25
32
40
50
[m /h]
0.16…1.25
1.6…4
6.3
5…10
16
12.5…25
31.5…40
VVF43.65-50
4)
VVF43.65-63
VVF43.80-80
4)
VVF43.80-100
VVF43.100-125
4)
VVF43.100-160
4)
VVF43.125-200
4)
VVF43.125-250
4)
VVF43.150-315
VVF43.150-400
S55206-V100
S55206-V101
S55206-V102
S55206-V103
S55206-V104
S55206-V105
S55206-V106
S55206-V107
S55206-V108
S55206-V109
65
65
80
80
100
100
125
125
150
150
50
63
80
100
125
160
200
250
315
400
1)
2)
3)
4)
Note
SV
40 mm
1000 N
2800 N
2800 N
SKB..
Δps
Δpmax
SKC..
Δps
Δpmax
[kPa]
> 50
2500
> 100
> 100
1600
900
550
350
-
1200
750
500
300
-
2500
2100
1200
750
450
-
1200
1100
650
400
-
2500
2000
1200
-
1200
-
-
700
650
450
400
300
250
175
160
125
100
1150
-
Flange type: 21; flange design: B (see "Flange types", page 55)
Suitable for medium temperatures up to 150 °C
See VVF53.., PN 25 (Data Sheet N4405): Flange dimensions for PN 25 are the same as those for
PN 16
Valve characteristic is optimized for maximum volumetric flow:
3
- kvs value 63 m /h from 90% stroke,
3
- kvs values 100, 160, 200 and 250 m /h from 80% stroke,
3
- kvs value 315 m /h from 70% stroke
For applications with steam the maximum differential and closing pressures differ
from the values above. For further details refer to "Applications with steam" on
page 12.
11 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
20 mm
Stroke
PN 25
1)
PN 16
2)
Actuators
3)
SAX..
3)
SKD..
SKB..
SKC..
Data Sheet
N4501
N4561
N4564
N4566
800 N
DN
kvs
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
20
25
25
25
25
32
40
40
40
40
50
50
65
80
100
125
150
[m /h]
0.16
0.2
0.25
0.32
0.4
0.5
0.63
0.8
1
1.25
1.6
2
2.5
3.2
4
6.3
5
6.3
8
10
16
12.5
16
20
25
31.5
40
63
100
160
250
400
SV
40 mm
1000 N
3)
Data Sheet
N4405
-20…220 °C
VVF53.15-0.16
VVF53.15-0.2
VVF53.15-0.25
VVF53.15-0.32
VVF53.15-0.4
VVF53.15-0.5
VVF53.15-0.63
VVF53.15-0.8
VVF53.15-1
VVF53.15-1.25
VVF53.15-1.6
VVF53.15-2
VVF53.15-2.5
VVF53.15-3.2
VVF53.15-4
VVF53.20-6.3
VVF53.25-5
VVF53.25-6.3
VVF53.25-8
VVF53.25-10
VVF53.32-16
VVF53.40-12.5
VVF53.40-16
VVF53.40-20
VVF53.40-25
VVF53.50-31.5
VVF53.50-40
4)
VVF53.65-63
4)
VVF53.80-100
4)
VVF53.100-160
4)
VVF53.125-250
VVF53.150-400
Positioning force
SAX..
Δps
Δpmax
3)
SKD..
Δps
Δpmax
3
Stock number
S55208-V100
S55208-V101
S55208-V102
S55208-V103
S55208-V104
S55208-V105
S55208-V106
S55208-V107
S55208-V108
S55208-V109
S55208-V110
S55208-V111
S55208-V112
S55208-V113
S55208-V114
S55208-V116
S55208-V117
S55208-V118
S55208-V119
S55208-V120
S55208-V122
S55208-V123
S55208-V124
S55208-V125
S55208-V126
S55208-V127
S55208-V128
S55208-V129
S55208-V130
S55208-V131
S55208-V132
S55208-V133
1)
2)
3)
4)
2800 N
2800 N
SKB..
Δps
Δpmax
SKC..
Δps
Δpmax
[kPa]
> 50
2500
2500
1200
1200
2500
1200
1600
> 100
-
700
450
300
175
125
650
400
250
160
100
2100
900
750
1200
1100
550
500
750
650
2000
350
300
450
400
1200
-
-
-
-
-
-
1150
-
DN 15…50: Flange dimensions for PN 16 and PN 25
DN 65…150: Flange dimensions for PN 25 only
Flange type: 21; flange design: B (see "Flange types", page 55)
Suitable for medium temperatures up to 150 °C
Valve is optimized for maximum volumetric flow:
3
- kvs value 63 m /h from 90% stroke,
3
- kvs values 100, 160 and 250 m /h from 80% stroke
Note
Other maximum differential and closing pressures are valid for applications with
steam, for further details refer to "Applications with steam" on page 12.
Applications with steam
Operate valves of the product lines VVF43.. and VVF53.. with inverted flow
direction for steam. This results in significantly higher closing pressures Δps and
higher maximum differential pressures Δpmax in combination with electrohydraulic
actuators of the product lines SKD.., SKB.. und SKC...
In some cases the kvs value may be reduced and it has to be assured from the
system side, that the maximum differential pressure Δpmax at system start is not
exceeded, so that the actuator can reliably open the valve.
12 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Stroke
Positioning
force
Actuators Data Sheet
PN 25
1)
PN 16
SKD..
SKB..
SKC..
3)
20 mm
1000 N
40 mm
2800 N
2800 N
SKB..
Δps
Δpmax
SKC..
Δps
Δpmax
N4561
N4564
N4566
2)
3)
Data Sheet
N4405
VVF53..
DN
100…220 °C
Stock number
VVF53.15-0.16
VVF53.15-0.2
VVF53.15-0.25
VVF53.15-0.32
VVF53.15-0.4
VVF53.15-0.5
VVF53.15-0.63
VVF53.15-0.8
VVF53.15-1
VVF53.15-1.25
VVF53.15-1.6
VVF53.15-2
VVF53.15-2.5
VVF53.15-3.2
4)
VVF53.15-4
4)
VVF53.20-6.3
VVF53.25-5
VVF53.25-6.3
VVF53.25-8
4)
VVF53.25-10
4)
VVF53.32-16
VVF53.40-12.5
VVF53.40-16
VVF53.40-20
4)
VVF53.40-25
VVF53.50-31.5
VVF53.50-40
VVF53.65-63
VVF53.80-100
4)
VVF53.100-160
4)
VVF53.125-250
4)
VVF53.150-400
S55208-V100
S55208-V101
S55208-V102
S55208-V103
S55208-V104
S55208-V105
S55208-V106
S55208-V107
S55208-V108
S55208-V109
S55208-V110
S55208-V111
S55208-V112
S55208-V113
S55208-V114
S55208-V116
S55208-V117
S55208-V118
S55208-V119
S55208-V120
S55208-V122
S55208-V123
S55208-V124
S55208-V125
S55208-V126
S55208-V127
S55208-V128
S55208-V129
S55208-V130
S55208-V131
S55208-V132
S55208-V133
kvs
SV
3
[m /h]
0,16
0,2
0,25
0,32
0,4
0,5
0,63
15
0,8
1
1,25
1,6
2
2,5
3,2
3,6
20
5
5
25
6,3
8
8
32
15
12,5
16
40
20
23
31,5
50
40
65
63
80
100
100 150
125 220
150 360
[kPa]
> 50
1200
2500
2500
1)
2)
3)
4)
DN
Stock number
S55206-V100
S55206-V101
S55206-V102
S55206-V103
S55206-V104
S55206-V105
S55206-V106
S55206-V107
S55206-V108
S55206-V109
kvs
3
[m /h]
50
65
63
80
80
100
125
100
150
200
125
220
280
150
360
-
-
2500
1000
750
500
300
200
1000
600
-
-
3)
Data Sheet N4404
100…220 °C
VVF43.65-50
VVF43.65-63
VVF43.80-80
VVF43.80-100
VVF43.100-125
4)
VVF43.100-160
VVF43.125-200
4)
VVF43.125-250
4)
VVF43.150-315
4)
VVF43.150-400
1200
> 100
PN 16
VVF43..
SKD..
Δps
Δpmax
SV
SKD..
Δps
Δpmax
-
-
SKB..
Δps
Δpmax
[kPa]
SKC..
Δps
Δpmax
800
750
> 100
-
-
-
-
1600
500
300
200
DN 15…50: Flange dimensions for PN 16 and PN 25
DN 65…150: Flange dimensions for PN 25 only
Flange type: 21; flange design: B (see "Flange types", page 55)
Suitable for medium temperatures up to 150 °C
Reduced kvs value
13 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.3.2
PN 16
1)
Actuators
2)
SAX..
2)
SKD..
SKB..
SKC..
3-port valves with flanged connections
Stroke
Positioning force
Data Sheet
N4501
N4561
N4564
N4566
Data Sheet
N4404
DN
kvs
20 mm
1000 N
800 N
SAX..
Δpmax
SV
2)
SKD..
Δpmax
2)
2800 N
40 mm
2800 N
SKB..
Δpmax
SKC..
Δpmax
[kPa]
3
Stock number
-20…220 °C
3)
VXF53.15-..
3)
VXF53.20-..
3)
VXF53.25-..
3)
VXF53.32-..
3)
VXF53.40-..
3)
VXF53.50-..
4)
VXF43.65-63
4)
VXF43.80-100
4)
VXF43.100-160
4)
VXF43.125-250
VXF43.150-400
[m /h]
S55208-..
S55208-..
S55208-..
S55208-..
S55208-..
S55208-..
15
20
25
32
40
50
1.6/2.5/4
6.3
6.3/10
16
16/25
40
S55206-V115
S55206-V116
S55206-V117
S55206-V118
S55206-V119
65
80
100
125
150
63
100
160
250
400
1)
2)
3)
4)
PN 25
1)
PN 16
2)
Actuators
3)
SAX..
3)
SKD..
SKB..
SKC..
> 100
> 100
750
500
300
1200
200
-
-
1100
650
400
200
1200
200
-
-
-
650
400
250
160
100
200
200
150
100
70
1150
-
-
-
Flange type: 21; flange design: B (see "Flange types", page 55)
Suitable for medium temperatures up to 150 °C
See VXF53.., PN 25 (data sheet N4405): Flange dimensions for PN 25 are the same as for PN 16
Valve is optimized for maximum volumetric flow:
3
- kvs value 63 m /h from 90% stroke,
3
- kvs values 100, 160 and 250 m /h from 80% stroke
Stroke
Positioning force
Data Sheet
N4501
N4561
N4564
N4566
Data Sheet
N4405
1200
DN
kvs
20 mm
1000 N
800 N
SAX..
Δpmax
SV
3)
SKD..
Δpmax
3)
2800 N
40 mm
2800 N
SKB..
Δpmax
SKC..
Δpmax
[kPa]
-20…220 °C
Stock number
VXF53.15-1.6
VXF53.15-2.5
VXF53.15-4
VXF53.20-6.3
VXF53.25-6.3
VXF53.25-10
4)
VXF53.32-16
VXF53.40-16
4)
VXF53.40-25
4)
VXF53.50-40
4)
VXF53.65-63
4)
VXF53.80-100
4)
VXF53.100-160
4)
VXF53.125-250
VXF53.150-400
S55208-V140
S55208-V141
S55208-V142
S55208-V144
S55208-V145
S55208-V146
S55208-V148
S55208-V149
S55208-V150
S55208-V152
S55208-V153
S55208-V154
S55208-V155
S55208-V156
S55208-V157
3
[m /h]
15
15
15
20
25
25
32
40
40
50
65
80
100
125
150
1)
2)
3)
4)
1.6
2.5
4
6.3
6.3
10
16
16
25
40
63
100
160
250
400
1200
1200
200
> 100
200
750
1100
500
650
300
-
100
-
400
-
1200
200
-
-
650
400
250
160
100
200
200
150
100
70
1150
-
-
-
DN 15…50: Flange dimensions for PN 16 and PN 25
DN 65…150: Flange dimensions for PN 25 only
Flange type: 21; flange design: B (see "Flange types", page 55)
Suitable for medium temperatures up to 150 °C
Valve is optimized for maximum volumetric flow:
3
- kvs value 63 m /h from 90% stroke,
3
- kvs values 16, 25, 40, 100, 160 and 250 m /h from 80% stroke
14 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.3.3
Product
number
Stock number
SAX31.00
S55150-A105
SAX31.03
S55150-A106
SAX61.03
SAX61.03U
S55150-A100
S55150-A100-A100
SAX81.00
S55150-A102
SAX81.03
SAX81.03U
S55150-A103
S55150-A103-A100
SKD32.21
SKD32.21
SKD32.50
SKD32.50
SKD32.51
SKD32.51
SKD60
SKD60
SKD62
SKD62U
SKD62
SKD62U
SKD62UA
SKD62UA
SKD82.50
SKD82.50U
SKD82.50
SKD82.50U
SKD82.51
SKD82.51U
SKD82.51
SKD82.51U
SKB32.50
SKB32.50
SKB32.51
SKB32.51
SKB60
SKB60
SKB62
SKB62U
SKB62
SKB62U
SKB62UA
SKB62UA
SKB82.50
SKB82.50U
SKB82.50
SKB82.50U
SKB82.51
SKB82.51U
SKB82.51
SKB82.51U
SKC32.60
SKC32.60
SKC32.61
SKC32.61
SKC60
SKC60
SKC62
SKC62U
SKC62
SKC62U
SKC62UA
SKC62UA
SKC82.60
SKC82.60U
SKC82.60
SKC82.60U
SKC82.61
SKC82.61U
SKC82.61
SKC82.61U
Stroke
Overview of actuators
Positioning Operating Positioning
force
voltage
signal
AC 230 V
20 mm
800 N
AC 24 V
DC 24 V
Spring
return
time
120 s
3-position
-
0…10 V
4…20 mA
0…1000 Ω
3-position
0…10 V
4…20 mA
0…1000 Ω
30 s
Opening: 30 s
Closing: 10 s
8s
1000 N
Manual
adjuster
Auxiliary
functions
-
1)
Press and fix

2) 3)
120 s
-
8s
20 mm
30 s
LED
,
3-position
AC 230 V
Positioning time
-
1)
Press and fix
1)
-
120 s
Opening: 30 s
Closing: 15 s
15 s

Turn, position
is maintained
2)
4)
AC 24 V
3-position
120 s
-
1)
120 s
-
1)
Opening: 120 s
Closing:10 s

8s
AC 230 V
20 mm
3-position
0…10 V
4…20 mA
0…1000 Ω
2800 N
10 s
10 s
2)
Turn, position
is maintained
AC 24 V
3-position
4)
120 s
-
1)
120 s
-
1)
Opening: 120 s
Closing: 20 s

10 s
AC 230 V
40 mm
3-position
0…10 V
4…20 mA
0…1000 Ω
2800 N
18 s
20 s
2)
AC 24 V
3-position
120 s
-
Turn, position
is maintained
4)
1)
18 s
1)
2)
3)
4)
Auxiliary switch, potentiometer
Position feedback, forced control, selection of valve characteristic
Optional: Sequence control, selection of acting direction
Plus sequence control, stroke limitation, and selection of acting direction
15 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.4
Ordering
Product number
VVF53.15-0.16
ASZ6.6
-
Example
Stock number
S55208-V100
S55845-Z108
4 284 8806 0
Description
2-port valve
Stem heating element
Stem sealing gland EPDM
Quantity
1
1
1
Delivery
Actuator, valve and accessories are packed and supplied as separate items.
Note
Counter-flanges, bolts and gaskets must be provided on site.
Product number
2.5
Accessories
2.5.1
Electrical accessories
Stock no.
Description
Note
ASZ6.5
ASZ6.5
Stem heating element
Required for medium temperatures < 0 °C
ASZ6.6
S55845-Z108
Stem heating element
Required for medium temperatures < 0 °C
Note
Valve lines V..F43/53..
When using a stem heating element and the medium temperature is below –5 °C,
the stem sealing gland must be replaced. In that case, the sealing gland must be
ordered also (stock number 4 284 8806 0).
16 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.5.2
Product
number
ASK50
ASK51
Mechanical accessories
Mechanical stroke inverter
Stock
number
Description
Valves
DN
SAX..
SKD..
SKB..
SKC..
ASK50
 Mechanical change of
acting direction for valves
with 20 mm stroke
 0% stroke of the actuator
corresponds to 100%
stroke of the valve
 To be fitted between
valve and actuator
V..F53.. 15…50
-

-
-
ASK51
 Mechanical change of
acting direction for valves
with 20 mm stroke
 0% stroke of the actuator
corresponds to 100%
stroke of the valve
 To be fitted between
valve and actuator
V..F53.. 15…50
-
-

-
Product
number
Stock
number
Description
Remark
-
428488060
Sealing gland
When using valves of the V..F43.. or V..F53.. lines with a stem heating
element and a medium temperature of below -5 °C, the stem sealing
gland must be replaced.
2.5.3
Adapters
Adapter type
Stock number
Bolts included
Description
ALF41B15
S55845-Z110
4x M12x90mm
ALF41B25
S55845-Z111
ALF41B40
S55845-Z112
ALF41B50
S55845-Z113
ALF41B65
S55845-Z114
ALF41B80
S55845-Z115
ALF41B100
S55845-Z116
ALF41B125
S55845-Z117
Adapter for replacing 3-port
valves VXF41.. by VXF43.. for
4x M12x90mm DN ≥ 65 and VXF53.. for DN
4x M16x90mm 15…50.
 Due to different dimensions
of the bypass flange
4x M16x90mm
 Every valve to be replaced
4x M16x90mm
requires an adapter

Adapter is supplied with the
8x M16x110mm
required number and size of
bolts and nuts as well as two
8x M16x110mm
suitable flat sealings
8x M16x110mm
ALF41B150
S55845-Z118
8x M20x110mm
VXF41..
DN 15
Examples
DN 15
DN 150
DN 25
DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
DN 65
17 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.6
Product replacement
The valves covered by this document replace the valves of the VVF../VXF.. lines
that have been produced by Siemens, Landis & Staefa and Landis & Gyr since
1974.
For most types of valves operating in the field, a one-to-one replacement is
available.
This does not apply to a small number of special valves that were marketed in
certain regions. If there is a need to replace such valves, please contact your
Siemens branch office. It that case, it might be necessary to change the piping.
Further use of actuators of the SKD32../60/62/82.., SKB32../60/62/82..,
SQX31../61../81.., and SQX32../62../82.. lines is possible.
Actuators of the SKC32../62/82.. lines require a new stem coupling since the
diameter of the new stem is only 10 mm. Stem couplings must be ordered as
separate items (stock no. 4 178 5649 8).
If the valve to be replaced was driven by an actuator of the SKD31../61../81..,
SKB31../61../81.. or SKC31../61../81.. lines, Siemens recommends to replace the
actuator as well, the reason being the actuator’s age.
The tables below list former valve types and their successors. There is also an
online replacement guide "Old2New" available; for access, go to
www.siemens.com/hit under "Old2New replacement guide".
Stem coupling for
SKC32../62/82..
(stock no. 4 178 5649 8)
2.6.1
2-port valves
2-port valves with flanged connections
-
50
50
65...150
-
Replacement
Stem
Product
DN
1)
coupling
number
2)
VVF53.50.. 50
VVF53.50.. 50
4 178 5649 8 VVF43..
65...150
-
50
50
65...150
-
4 178 5649 8 4 178 5649 8 VVF53.50
4 178 5649 8 VVF43..
-
15...40
-
Product number
VVF41.49 VVF41.494
VVF41.50 VVF41.504
VVF41..
VVF41..4
-
-
VVF45.49 VVF45.494
VVF45.50 VVF45.504
VVF45..
VVF45..4
-
-
VVF52..
VVF52..A
VVF52..G
1)
2)
Note
-
DN
VVF41.495
VVF41.505
VVF41..5
-
VVF52..M
Adapter
-
VVF53..
50
65...150
15...40
Since the new valves use uniform stem couplings, valves driven by electrohydraulic actuators SKC..
require a new stem coupling
Replacement valves are the same nominal size DN, but have different kvs values. This must be
taken into consideration when replacing a valve in the plant (stability, active stroke range)
When using valves of the V..F43.. or V..F53.. lines with a stem heating element and
a medium temperature of below -5 °C, the stem sealing gland must be replaced. In
that case, the sealing gland must be ordered also (stock number 4 284 8806 0).
18 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.6.2
VXF41..
VXF41..4
VXF41.49.. VXF41.494..
VXF41.50.. VXF41.504..
VXF41..
VXF41..4
3-port valves
3-port valves with flanged connections
Product
DN
number
15
VXF41..5
25
40
VXF41.495..
50
VXF41.505..
65
80
VXF41..5
100
125
150
1)
Adapter
ALF41B15
ALF41B25
ALF41B40
ALF41B50
ALF41B50
ALF41B65
ALF41B80
ALF41B100
ALF41B125
ALF41B150
Stem
1)
coupling
4 178 5649 8
4 178 5649 8
4 178 5649 8
4 178 5649 8
4 178 5649 8
Replacement
Product
DN
number
15
VXF53..
25
40
1)
VXF53.50..
50
VXF53.50..
65
80
VXF43..
100
125
150
Replacement valves are the same nominal size DN, but have different kvs values. This must be
taken into consideration when replacing a valve in the plant (stability, active stroke range)
Note
When using valves of the V..F43.. or V..F53.. lines with a stem heating element and
the medium temperature is below -5 °C, the stem sealing gland must be replaced.
In that case, the sealing gland must be ordered also (stock number 4 284 8806 0).
Notes
When replacing old valves by new valves, the installation might have to be
modified.
Valve lines
VXF53../VXF43..
The dimension of the bypass is smaller than that of the valves of the former
VXF41.. line. This means that a one-to-one replacement of the VXF41.. valves
requires an ALF41B.. adapter. This adapter compensates for the difference in
dimensions, thus facilitating replacement of the valve without having to modify the
piping.
2.6.3
Product
number
ASZ6.5
Stock number
ASZ6.5
Note
Accessories
Description
Stem heating element
Note
Required for medium temperatures < 0 °C
The ASZ6.5 stem heating element is suitable for use with the SKB.., SKC.., SKD..,
and SQX.. actuators. However, when replacing both the valve and the actuator,
actuators of the SAX.. line also require replacement of the ASZ6.5 by the ASZ6.6
stem heating element.
19 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.7
Stem sealing gland
Spare parts
Product
number
DN
Comments
Stock number
2-port valves (high-performance)
VVF53..
DN 15…150
VVF43..
DN 65…150
74 284 0061 0
-
4 284 8806 0
For medium temperatures below -5 °C
74 284 0061 0
-
4 284 8806 0
For medium temperatures below -5 °C
3-port valves (high-performance)
2-port valves VVF..
Spare parts for expired
product lines
VXF53..
DN 15…150
VXF43..
DN 65…150
Product
number
DN
74 284 0061 0
-
4 284 8806 0
For medium temperatures below -5 °C
74 284 0061 0
-
4 284 8806 0
For medium temperatures below -5 °C
Stock number
Stem
diameter
VVF41..
VVF41..4
DN 50…150
4 679 5629 0
14 mm
-
4 679 5630 0
14 mm
 PTFE sleeve
 For temperatures ≤ 180 °C
4 284 9540 0
14 mm
 PTFE sleeve
 Silicone-free version
 For temperatures ≤ 180 °C
4 679 5629 0
14 mm
-
4 679 5630 0
14 mm
 PTFE sleeve
 For temperatures ≤ 180 °C
4 284 8806 0
10 mm
-
4 284 8829 0
10 mm
 PTFE sleeve
 For temperatures ≤ 180 °C
4 284 9538 0
10 mm
 PTFE sleeve
 Silicone-free version
 For temperatures ≤ 180 °C
VVF41..5
VVF45..
VVF45..4
DN 50…150
VVF52..
VVF52..A
VVF52..G
DN 15…40
VVF52..M
3-port valves VXF..
Spare parts for expired
product lines
Remarks
2-port valves (high-performance)
Product
number
DN
Stock number
Stem
diameter
Remarks
3-port valves (high-performance)
VXF41..
VXF41..4
DN 15…40
4 284 8806 0
10 mm
-
4 284 8829 0
10 mm
 PTFE sleeve
 For temperatures ≤ 180 °C
4 284 9538 0
10 mm
 PTFE sleeve
 Silicone-free version
 For temperatures ≤ 180 °C
4 679 5629 0
14 mm
-
4 679 5630 0
14 mm
 PTFE sleeve
 For temperatures ≤ 180 °C
4 284 9540 0
14 mm
 PTFE sleeve
 Silicone-free version
 For temperatures ≤ 180 °C
VXF41..5
VXF41..
VXF41..4
DN 50…150
VXF41..5
20 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.8
Valve sizing for fluids (water, heat transfer
oil)
2.8.1
Procedure for valve sizing
Essential values and formulas required for valve sizing:
Sizing and selection of valves and actuators
1
2
Determine the basic hydraulic circuit
Determine ΔpVR or ΔpMV
One of the factors that determines control stability is the valve authority PV. It is determined depending
on the type of header and the hydraulic circuit
 Header with pressure and variable
volumetric flow
 Header with pressure and constant volumetric flow,
or
 Header with low differential pressure and variable
volumetric flow
4
Continue with ΔpMV
Continue with ΔpVR
p VR
p V100  pMV
p V100 
2
Determine the volumetric flow Determine V100 depending on the type of medium
V100
Water without antifreeze:
Water with antifreeze, heat transfer oil:


Q
Q
 3600
100
V 100 
V 100  100
1.163  T
c    T
5
Determine the kvs value
3
Determine ΔpV100
For steam, see "2.9 Sizing valves for steam", page 26
There are different ways to determine the kvs value:
Flow chart
By way of calculation
kV 
HIT sizing and
selection:
V 100
Valve slide
rule
www.siemens.com/hit
p V100
100
Determine the kvs value according to:
0.85  k V  value  k VS  value
1)
or within the following band:
0,74  k VS  value  k V  1.175  k VS  value
6
Check the resulting
differential pressure ΔpV100
7
Select a suitable line of
valves
8
Check the valve authority PV
(control stability)
This procedure shows the mathematical approach. The following examples make use of the flow chart
and show the way of calculation
The resulting differential pressure ΔpV100 is used for calculating the valve authority PV:
2
 V

p V100  100   100 
 k vs 
Select the type of valve (2-port, 3-port, or 3-port valve with bypass):
 Type of connection (flanged, externally or internally threaded, soldered)
 PN class
 Nominal size DN
 Maximum or minimum medium temperature
 Type of medium
Check PV with the resulting differential pressure ΔpV100:
 Header with pressure and variable
volumetric flow
PV 
9
Select the actuator
p V100
p VR
 Header with pressure and constant volumetric flow,
or
 Header with low differential pressure and variable
volumetric flow
PV 
p V100
p V100  pMV
Select the actuator according to the following criteria:
 Operating voltage  Spring return function
 Positioning signal  Auxiliary functions
 Positioning time
10 Check the working ranges
Differential pressure Δpmax > ΔpV0
11 Valve and actuator
Closing pressure Δps > H0
Write down product and stock number of the selected valve and actuator
1)
Experience shows that the selected kvs value is usually too high. To the benefit of a higher valve
authority Siemens recommends to check sensibly whether a valve with a kvs value of approx. 85% of
the calculated kvs value is possible. If this is not possible, the second rule applies.
21 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.8.2
Fluids
Flow chart
Kinematic viscosity υ < 10 mm2/s
22 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.8.3
Impact of fluid properties on valve sizing
Valves are sized based on the volumetric flow passing through them. The most
important characteristic of a valve is its kvs value. Since this value is determined
with water at a temperature of +5…30 °C and a differential pressure Δp of 100 kPa
(1 bar), additional influencing factors must be taken into consideration if the
properties of the medium passing through the valve are different.
The following properties of a medium affect valve sizing:
 The density ρ and the specific heat capacity c have a direct impact on the
volumetric flow, which transfers the required amount of heat or cooling energy
 The kinematic viscosity ν influences the flow conditions (laminar or turbulent) in
the valve and thus the differential pressure Δp at a given volumetric flow V
2.8.3.1
Density ρ
The amount of heat Q carried by a fluid depends on the available mass flow m, the
specific heat capacity c, and the temperature spread ΔT:
 m
  c  T
Q
In the HVAC field, calculations are usually based on the volumetric flow V, resulting
from the available mass flow m and the density ρ:
  V    c  T
Q
Within the temperature range normally used in the HVAC field, the density ρ of
water is assumed to be about 1000 kg/m3 and the specific heat capacity c 4.19
kJ/(kg·K). This makes it possible to apply a simplified formula with a constant of
1.163 kWh/(m3·K) for calculating the volumetric flow V in m3/h:
V 

Q
1.163  T
The rated capacity Q100 of a plant with the valve fully open is calculated with the
following formula:
V 100 

Q
100
1.163  T
For watery solutions, such as mixtures of water and antifreeze, or other fluids like
heat transfer oils, refer to the chapters below.
2.8.3.2
Specific heat capacity c
The amount of heat Q carried by a fluid depends on the available mass flow m, the
specific heat capacity c, and the temperature spread ΔT.
Within the temperature range normally used in the HVAC field, the specific heat
capacity c of water changes only slightly. Therefore, the approximate value used
for the specific heat capacity c is 4.19 kJ/(kg·K). This makes it possible to apply a
simplified formula with a constant of 1.163 kWh/(m3·K) for calculating the
volumetric flow V in m3/h:
V 

Q
1.163  T
If watery solutions, such as mixtures of water and antifreeze, or other fluids like
heat transfer oils are used for the transmission of heat, the required volumetric flow
V is to be calculated with the density ρ and the specific heat capacity c at the
operating temperature:
V 

Q
  c  T
23 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
The specific heat capacity of fluids is specified in trade literature. For mixtures, the
specific heat capacity c is calculated on the basis of the mixture’s mass proportions
m1 and m2:
c Gemisch 
m1  c 1  m 2  c 2
m1  m 2
In the case of heating applications, the specific heat capacity c1 or c2 at the highest
temperature must be used, and in the case of cooling applications that at the
lowest temperature.
2.8.3.3
Kinematic viscosity ν
The kinematic viscosity ν affects the type of flow (laminar or turbulent) and thus the
friction losses inside the valve. It has a direct impact on the differential pressure at
a given volumetric flow.
The kinematic viscosity ν is specified either in mm2/s or centistokes (cSt):
1 cSt = 10-6 m2/s = 1 mm2/s
Water at a temperature of between 5 and 30 °C is used to determine the kvs value
as a comparison value. Within this temperature range, water has a kinematic
viscosity of 1.6 to 0.8 mm2/s. The flow inside the valve is turbulent.
When sizing valves for media with other kinematic viscosities ν, a correction must
be made. Up to a kinematic viscosity ν of less than 10 mm2/s, the impact is
negligible since it is smaller than the permissible tolerance of the kvs value (+/10%).
In general practice, the correction is made by applying a correction factor FR, which
gives consideration to the different flow and friction conditions when calculating the
kvs value.
FR is the factor used for the impact of the valve’s Reynolds number. It must be
applied when there is nonturbulent flow in the valve, when the differential pressure
is low, for example, in the case of high-viscosity fluids, very low flow coefficients, or
combinations of them. It can be determined by way of experiment.
FR = flow coefficient for nonturbulent flow conditions divided by the flow coefficient
ascertained under the same plant conditions for turbulent flow
(EN 60534-2-1[1998])
kv value under nonturbulent flow conditions
kV 
V 100

FR
1
p100
100
24 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Kinematic viscosity
2
[mm /s]
2000
1500
1000
800
600
400
300
250
200
150
100
80
Correction factor FR for
different kinematic
viscosities ν
1)
Correction factor FR
0.52
0.53
0.55
0.56
0.57
0.60
0.61
0.62
0.64
0.70
0.69
0.70
Kinematic viscosity
2
[mm /s]
60
40
30
25
20
15
10
8
6
4
3
Correction factor FR
0.73
0.77
0.8
0.82
0.83
0.86
0.90
1)
(0.93)
1)
(0.94)
1)
(0.95)
1)
(0.97)
2
Impact in the case of kinematic viscosities up to 10 mm /s is negligible
2.8.4
Influencing factors with selected groups of fluids
Media properties to be considered for a few selected groups of fluids:
Formula
Density ρ
Specific heat capacity c
Kinematic viscosity ν

Q
 3600
V 100  100
c    T

Q
 3600
V 100  100
c    T
kV 
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No (FR = 1)
No (FR = 1)
Yes
Yes
V 100

FR
1
p100
100
Group of fluids
Water
Water with antifreeze
Heat transfer oils
Brines
Notes on water and
water with antifreeze
Notes on heat transfer
oils and brines
The HVAC Integrated Tool (HIT) supports sizing and selection of valves for water
and water with antifreeze (www.siemens.com/hit).
When sizing valves for use with heat transfer oils or brines, the medium properties
specified by the suppliers must be taken into account:




Specific heat capacity c
Kinematic viscosity ν
Specific density ρ
During the heating up phase, the kinematic viscosity ν can reach a high level
while the volumetric flow V and thus the available amount of heat Qheating up phase
are much smaller than planned. This must be taken into account during the
planning phase and when sizing the valves, see "2.10.3 Example for heat
transfer oil", page 31.
2.8.5
Rangeability Sv, minimum controllable output Qmin
When sizing and selecting a valve, it must be ensured that – in the controlled
operating state – the output does not drop below the minimum controllable output
Qmin. Otherwise, the controlling element only regulates in on/off mode within the
range of the initial flow surge. On/off mode reduces the plant’s energy efficiency
and adversely affects the controlling element’s life.
The rangeability SV is an important characteristic used for assessing the
controllable range of a controlling element.
The smallest volumetric flow kvr that can be controlled is the volumetric flow
passing through the valve when it opens. Output Qmin is the smallest output of a
consumer (e.g. of a radiator) that can be controlled in modulating mode.
25 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
SV 
k vs
k vr
For more detailed information on the subject, refer to the brochure "Hydraulics in
building systems" (ordering no. 0-91917-en).
2.9
Sizing valves for steam
Since steam is compressible, valve sizing for steam must be based on other
criteria. The most important characteristic of compressible flow is that the speed of
flow in the throttling section can only increase up to the speed of sound. When this
limit is reached, the speed of flow and thus the volumetric flow, or the steam mass
flow, no longer increases, even if the differential pressure ∆p rises. To ensure good
controllability and favorably priced valve selection, it is advisable to have the
differential pressure in normal operation as close as possible to the critical
pressure ratio.
Before starting valve sizing, the plant-related process parameters and the
prevailing operating state must be defined:
 Absolute steam pressure [kPa abs], [bar abs]
 Temperature of saturated or superheated steam [°C]
 Differential pressure ∆pmax in normal operation
The dryness of saturated steam at the valve’s inlet must be > 0.98.
During plant startup or shutdown, supercritical pressure conditions can occur:
 In terms of potential damage to the valve, a subcritical pressure ratio is far less
crucial since the speed of flow lies below the speed of sound, material abrasion
is reduced, and the noise level is lower
Sizing procedure
1.
2.
3.
Calculation of kvs
value for steam
Calculate the steam mass flow m based on the amount of energy required
Q100, the steam pressure, and the steam temperature.
Determine whether the pressure ratio is in the sub- or supercritical range.
Determine the kvs value based on the steam mass flow and the steam
pressure.
Steam mass flow
  Q100  3600
m
rp1
Subcritical range
Pressure ratio =
Supercritical range
p1  p3
 100%  42%
p1
p1  p3
 100%  42%
p1
Pressure ratio < 42% subcritical
k vs  4.4 
p1  p 3
 100 %
p1

m
p 3  (p1  p 3 )
Pressure ratio  42% supercritical
(not recommended)
k
k vs  8.8 

m
k
p1
Q100 = rated capacity in kW
rp1
= specific heat capacity of steam in kJ/kgK
p1
= absolute pressure at the valve inlet in kPa (prepressure)
p3

m
= steam mass flow in kg/h
k
= factor for superheating the steam = 1 + 0.0012 x T (for saturated steam, k = 1)
T
= temperature spread in K of saturated steam and superheated steam
= absolute pressure at the valve outlet in kPa
26 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Note
Notes on the
supercritical range
Subcritical < 42%
Supercritical ≥ 42%
When there is a pressure ratio (p1 – p3) / p1 >0.42, the flow passing through the
narrowest section of the valve reaches the speed of sound. This can lead to higher
noise levels. A throttling system operating at a lower noise level (multistage
pressure reduction, damping throttle by the outlet) alleviates the problem.
 Steam-controlled heat transfer medium without condensation
 Shutoff valve on the steam side of condensation-controlled heat transfer media
 Steam humidifier
 Steam-controlled heat transfer medium with condensation in the heat exchanger
For saturated and superheated steam, the differential pressure pmax across the
valve should be as close as possible to the critical pressure ratio.
Chart example: The chart of the
selected valve must be observed
X and Y: Suitable actuators,
depending on the 2-port valve
Abs. operating pressure [bar]
Recommendation for
differential pressure
pmax
The level of absolute pressure p1 at the valve inlet must be at least such that the
absolute pressure p3 at the valve outlet is higher than the atmospheric pressure.
Medium temperature [°C]
Wet steam
To be avoided
Saturated steam
Permissible operating
range
Superheated steam
27 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Water vapor table for the saturated state (pressure table)
Water vapor table
Pressure
p
[kPa]
Temperature
p
[bar]
T
[°C]
Spec. volume
water
V'
3
[dm /kg]
Spec. volume
steam
V''
3
[m /kg]
Density steam Enthalpy water
ρ''
3]
[kg/m
h'
[kJ/kg]
Enthalpy
steam
h''
[kJ/kg]
Heat of
vaporization
r
[kJ/kg]
1
0.010
6.9808
1.0001
129.20
0.007739
29.34
2514.1
2485.0
2
0.020
17.513
1.0012
67.01
0.01492
73.46
2533.6
2460.2
3
0.030
24.100
1.0027
45.67
0.02190
101.00
2545.6
2444.6
4
0.040
28.983
1.0040
34.80
0.02873
121.41
2554.5
2433.1
5
0.050
32.898
1.0052
28.19
0.03547
137.77
2561.6
2423.8
6
0.060
36.183
1.0064
23.74
0.04212
151.50
2567.5
2416.0
7
0.070
39.025
1.0074
20.53
0.04871
163.38
2572.6
2409.2
8
0.080
41.534
1.0084
18.10
0.05523
173.86
2577.1
2403.2
9
0.090
43.787
1.0094
16.20
0.06171
183.28
2581.1
2397.9
10
0.10
45.833
1.0102
14.67
0.06814
191.83
2584.8
2392.9
20
0.20
60.086
1.0172
7.650
0.1307
251.45
2609.9
2358.4
30
0.30
69.124
1.0223
5.229
0.1912
289.30
2625.4
2336.1
40
0.40
75.886
1.0265
3.993
0.2504
317.65
2636.9
2319.2
50
0.50
81.345
1.0301
3.240
0.3086
340.56
2646.0
2305.4
60
0.60
85.954
1.0333
2.732
0.3661
359.93
2653.6
2293.6
70
0.70
89.959
1.0361
2.365
0.4229
376.77
2660.1
2283.3
80
0.80
93.512
1.0387
2.087
0.4792
391.72
2665.8
2274.0
90
0.90
96.713
1.0412
1.869
0.5350
405.21
2670.9
2265.6
100
1.0
99.632
1.0434
1.694
0.5904
417.51
2675.4
2257.9
150
1.5
111.37
1.0530
1.159
0.8628
467.13
2693.4
2226.2
200
2.0
120.23
1.0608
0.8854
1.129
504.70
2706.3
2201.6
250
2.5
127.43
1.0675
0.7184
1.392
535.34
2716.4
2181.0
300
3.0
133.54
1.0735
0.6056
1.651
561.43
2724.7
2163.2
350
3.5
138.87
1.0789
0.5240
1.908
584.27
2731.6
2147.4
400
4.0
143.62
1.0839
0.4622
2.163
604.67
2737.6
2133.0
450
4.5
147.92
1.0885
0.4138
2.417
623.16
2742.9
2119.7
500
5.0
151.84
1.0928
0.3747
2.669
640.12
2747.5
2107.4
600
6.0
158.84
1.1009
0.3155
3.170
670.42
2755.5
2085.0
700
7.0
164.96
1.1082
0.2727
3.667
697.06
2762.0
2064.9
800
8.0
170.41
1.1150
0.2403
4.162
720.94
2767.5
2046.5
900
9.0
175.36
1.1213
0.2148
4.655
742.64
2772.1
2029.5
1'000
10
179.88
1.1274
0.1943
5.147
762.61
2776.2
2013.6
1'100
11
184.07
1.1331
0.1774
5.637
781.13
2779.7
1998.5
1'200
12
187.96
1.1386
0.1632
6.127
798.43
2782.7
1984.3
1'300
13
191.61
1.1438
0.1511
6.617
814.70
2785.4
1970.7
1'400
14
195.04
1.1489
0.1407
7.106
830.08
2787.8
1957.7
1'500
15
198.29
1.1539
0.1317
7.596
844.67
2798.9
1945.2
1'600
16
201.37
1.1586
0.1237
8.085
858.56
2791.7
1933.2
1'700
17
204.31
1.1633
0.1166
8.575
871.84
2793.4
1921.5
1'800
18
207.11
1.1678
0.1103
9.065
884.58
2794.8
1910.3
1'900
19
209.80
1.1723
0.1047
9.555
896.81
2796.1
1899.3
2'000
20
212.37
1.1766
0.09954
10.05
908.59
2797.2
1888.6
2'500
25
223.94
1.1972
0.07991
12.51
961.96
2800.9
1839.0
3'000
30
233.84
1.2163
0.06663
15.01
1008.4
2802.3
1793.9
4'000
40
250.33
1.2521
0.04975
10.10
1087.4
2800.3
1712.9
5'000
50
263.91
1.2858
0.03743
25.36
1154.5
2794.2
1639.7
6'000
60
275.55
1.3187
0.03244
30.83
1213.7
2785.0
1571.3
7'000
70
285.79
1.3513
0.02737
36.53
1267.4
2773.5
1506.0
8'000
80
294.97
1.3842
0.02353
42.51
1317.1
2759.9
1442.8
9'000
90
303.31
1.4179
0.02050
48.79
1363.7
2744.6
1380.9
10'000
100
310.96
1.4526
0.01804
55.43
1408.0
2727.7
1319.7
11'000
110
318.05
1.4887
0.01601
62.48
1450.6
2729.3
1258.7
12'000
120
324.65
1.5268
0.01428
70.01
1491.8
2689.2
1197.4
13'000
130
330.83
1.5672
0.01280
78.14
1532.0
2667.0
1135.0
14'000
140
336.64
1.6106
0.01150
86.99
1571.6
2642.4
1070.7
15'000
150
342.13
1.6579
0.01034
96.71
1611.0
2615.0
1004.0
20'000
200
365.70
2.0370
0.005877
170.2
1826.5
2418.4
591.9
22'000
220
373.69
2.6714
0.003728
268.3
2011.1
2195.6
184.5
22'120
221.2
374.15
3.17
0.00317
315.5
2107.4
2107.4
0
28 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.10
Calculation examples for water, heat transfer
oil and steam
2.10.1
Example for water: Heater with pressure and variable
volumetric flow
HVAC plant using a header with
pressure, header with variable
volumetric flow
Air heating coil 1
Flow
Return
Supply air
Outside air
Output
∆pVR
∆ppiping
60 °C
40 °C
20 °C
10 °C
55 kW
34 kPa
11 kPa
Other plant data
Pressure class
Control
Operating voltage
1
Determine the basic hydraulic Injection circuit with 2-port valve
circuit
2
Determine ΔpVR or ΔpMV
PN 16
DC 0…10 V
AC 24 V
With pressure and variable volumetric flow  ΔpVR
ΔpVR = 34 kPa
3
Determine ΔpV100
4
Determine the volumetric flow 
Q100
55 kW

 2.36 m 3 / h
V100 
V100
1.163  T 1.163  60 C  40 C 
5
Determine the kvs value
p VR
With pressure and variable volumetric flow  p
V100 
2
ΔpV100 = 17 kPa
Flow chart
Use the flow chart to determine the kvs value:
3
1. kvs value: 5 m /h
3
2. kvs value: 6.3 m /h
By way of calculation
kv 

V
100
p V100
100

2.36 m3 / h
17 kPa
100
3
 5.7 m3 / h
3
3
3
kvs value ≥ 0.85 • 5.7 m /h = 4.8 m /h  kvs value = 5 m /h or 6.3 m /h
3
1. kvs value: 5 m /h
3
2. kvs value: 6.3 m /h
6
Check the resulting
differential pressure ΔpV100
First kvs value:
Second kvs value:
7
Select suitable line of valves






 V
p V100  100   100
 k
 vs
2
2
3



  100   2.36 m / h   22.3 kPa

 5 m3 / h 



2
2
 2.36 m3 / h 
 V 
  14 kPa
p V100  100   100   100  
k 
 6.3 m3 / h 
 vs 


2-port valve (resulting from the basic hydraulic circuit)
Flanged (specified by the planner)
PN class 16 (specified by the planner)
Nominal size DN (resulting from the selected valve)
Maximum medium temperature: 60 °C
Type of medium: Water
 1st selection: VVF53.25-5
2nd selection: VVF53.20-6.3 or VVF53.25-6.3
29 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
8
Check the valve authority PV
(control stability)
Check PV using the resulting differential pressure ΔpV100:
First kvs value:
PV 
p V100
22.3 kPa

 0.66
p VR
34 kPa
Second kvs value:
PV 
p V100
14 kPa

 0.41
p VR
34 kPa
3
 Higher valve authority PV  kvs value = 5 m /h
9
Select the actuator
10 Check the working ranges
Select actuator according to the following criteria:
 Operating voltage
 Positioning signal
 Positioning time
 Spring return function
 Auxiliary functions
Differential pressure Δpmax > ΔpV0
Closing pressure Δps > H0
11 Select valve and actuator
Type of valve:
VVF53.25-5
Type of actuator:
According to the table
2.10.2
Example for water: Heater with low differential pressure
without main pump
HVAC plant using a header with
low differential pressure without
main pump
Heating group 1
Flow
Return
Output
∆pheat meter
∆ppiping
60 °C
45 °C
70 kW
8 kPa
3 kPa
Other plant data
Pressure class
Control
Operating voltage
PN 16
3-position
AC 230 V
1 Heating group 1
2 Boiler 1
1
Determine the basic hydraulic Mixing circuit
circuit
2
Determine ΔpVR or ΔpMV
Header with low differential pressure and variable volumetric flow  ΔpMV
ΔpMV = Δppiping + Δpheat meter = 3 kPa + 8 kPa = 11 kPa
3
Determine ΔpV100
Header with low differential pressure and variable volumetric flow  ΔpV100 ≥ ΔpMV
ΔpV100 = 11 kPa
4
Determine the volumetric flow
V100
V 100 
5
Determine the kvs value
Flow chart
Q100
70 kW

 4 m3 / h
1 .163  T 1.163  60 C  45 C 
Use the flow chart to determine the kvs value:
3
kvs value: 12 m /h
By way of calculation
kv 
V 100

p V100
100
4 m3 / h
11kPa
100
3
 12.1m3 / h
3
3
kvs value ≥ 0.85 • 12 m /h = 10.2 m /h  kvs value = 10 m /h
3
kvs value: 10 m /h
30 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
6
Check the resulting
differential pressure ΔpV100
 V
p V100  100   100
 k
 vs
7
Select suitable line of valves






2
2
3



  100   4 m / h   16 kPa

 10 m 3 / h 



2-port valve (resulting from the basic hydraulic circuit)
Flanged (specified by the planner)
PN class 16 (specified by the planner)
Nominal size DN (resulting from selected valve)
Maximum medium temperature: 60 °C
Type of medium: Water
 Selection: VXF53.25-10
8
Check the valve authority PV
(control stability)
Check PV using the resulting differential pressure ΔpV100:
p V100
16 kPa

 0.59
PV 
p V100  p MV
16 kPa  11kPa
9
Select the actuator
Select actuator according to the following criteria:
 Operating voltage
 Positioning signal
 Positioning time
 Spring return function
 Auxiliary functions
10 Check the working ranges
Differential pressure Δpmax > ΔpV0
Closing pressure Δps > H0
11 Select valve and actuator
Type of valve:
VXF53.25-10
Type of actuator: According to the table
2.10.3
Example for heat transfer oil
As outlined in chapter "2.8.3 Impact of fluid properties on valve sizing", page 23,
when sizing a valve, the density ρ, the specific heat capacity c, and the kinematic
viscosity ν must be taken into consideration. Also, to ensure correct and efficient
operation, a closer look should be taken at the controlled mode and the startup
mode.
Properties
Description
Mobiltherm 603
Max. permissible flow temperature
285 °C
Max. permissible film temperature
315 °C
Kinematic viscosity at 20 °C
50.5 mm /s
Kinematic viscosity at 100/200/300 °C
4.2/1.2/0.58 mm /s
Density at 20 °C
859 kg/m
Density at 100/200/300 °C
811/750/690 kg/m
Specific heat capacity c at 20 °C
1.89 kJ/kgK
Specific heat capacity c at 100/200/300 °C
2.18/2.54/2.91 kJ/kgK
2
2
3
3
When planning and commissioning a plant or when sizing valves, the suppliers’
specifications must be observed. The experience and know-how of the suppliers
help select the right type of heat transfer oil.
31 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Plant data
Consumer:
Differential pressure ∆pVR:
Flow temperature TVL:
Return temperature TRL:
Required capacity Q100:
Basic hydraulic circuit:
Operating data
Controlled mode when heated up
Heating up mode
Required capacity Q
Q100 = 55 kW
Q is undefined
Temperature spread ΔT
50 K
-
Determine the volumetric flow V100

Q
100  3600

V
100 
c    T
-

V
100 
Air-heat transfer oil heat exchanger
50 kPa (0.5 bar)
280 °C
230 °C
55 kW
Throttling circuit
55 kW  3600
2.91kJ / kgK  690 kg / m 3  50 K
3

V
100  1.97 m / h
Differential pressure ΔpV100
Flow temperature TVL
With pressure and variable volumetric flow

p V100

ΔpV100 = 25 kPa (0.25 bar)
280 °C
Approx. 20 °C
2
Kinematic viscosity ν
At 300 °C: 0.58 mm /s
Correction factor FR
At 280 °C: 1
2
50.5 mm /s
2
Kinematic viscosity υ <10 mm /s
Determine the kvs value
kV 
Must be calculated
p VR

2
V 100

FR
At 20 °C: 0.75
Interpolated according to the correction factor
table on page 25
-
1
p100
100
FR = 1
kv 
V 100
p V100
100
kvs value ≥ 0.85

1.97 m 3 / h
25 kPa
100
 3.94 m 3 / h
• 3.94 m3/h = 3.35 m3/h
3
-> kVS value = 5 m /h
Volumetric flow resulting from the
selected kvs value
V 100  k vs  FR 
p V100
100
p V100
V 100  k vs  FR 
100
25 kPa
V 100  5 m 3 / h  1 
100
25 kPa
V 100  5 m3 / h  0.75 
100
V 100  2.5 m 3 / h
V 100  1.9 m3 / h
 In the heating up phase, the volumetric flow is
reduced by 5%!
Select the 2-port valve
VVF61.242
32 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.10.4
Example for steam
As outlined in chapter "2.9 Sizing valves for steam", page 26, it must be
determined first whether a supercritical or subcritical pressure ratio exists in the
plant.
Example 1:
By way of calculation
Saturated steam
Prepressure p1

Steam mass flow m
Given
Required
Solution
= 151.8 °C
= 500 kPa (5 bar)
= 460 kg/h
Pressure ratio = 30%
Pressure ratio ≥ 42%
(supercritical permitted)
Subcritical pressure ratio
Supercritical pressure ratio
kvs, valve type
kvs, valve type
p 3  p1 
30 %  p1
100 %
p 3  500 kPa 
30 %  500 kPa
 350 kPa (3.5bar )
100 %
460 kg / h
k v  4.4 
350 kPa  (500 kPa  350 kPa)
1
Example 3:
With chart
460 kg / h
1
500 kPa
3
kv = 8.09 m /h
3
kv = 8.83 m /h
Example 2:
With chart
k v  8.8 
3
 VVF53.25-10
3
Selected
kvs = 10 m /h
Given
Saturated steam
Prepressure p1

Steam mass flow m
Differential pressure
Required
kvs, valve type
Solution
1. Vertical line upward to an absolute prepressure p1 = 1.5 bar (150 kPa).
2. Horizontal line to the right to the point of intersection 1.5 bar (15 kPa) and differential
pressure 0.4 bar (40 kPa).
3. Vertical line downward to 75 kg/h.
4. Point of intersection kvs value
Select available kvs value of VVF.. valve lines.
3
5. Selected kvs value: 5 m /h.
Selected
kvs value: 5 m /h
Given
Superheated steam
Saturated steam
Superheating T
Prepressure p1

Steam mass flow m
Differential pressure
Required
kvs, valve type
Solution
1. Vertical line upward to an absolute prepressure p1 = 5 bar (500 kPa).
2. Horizontal line to the right to the point of intersection 5 bar (500 kPa) and differential
pressure 2 bar (200 kPa).
3. Scale "Superheated steam": Along the line at 150 kg/h upward to superheating at
100 K, then the vertical line upward.
4. Point of intersection kvs value
Select available kvs value of VVF.. valve lines.
3
5. Selected kvs value: 3.15 m /h.
Selected
kvs value: 3.15 m /h
3
kvs = 8 m /h
 VVF53.25-8
= 133.5 °C
= 150 kPa (1.5 bar)
= 75 kg/h
= 40 kPa (0.4 bar)
 VVF53.25-5
3
= 251.8 °C
= 151.8 °C
= 100 K
= 500 kPa (5 bar)
= 150 kg/h
= 200 kPa (2 bar)
 VVF53.15-3.2
33 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Example 3:
Superheated
steam
Example 2:
Saturated
steam
34 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.11
Valve characteristics
2.11.1
2-port valves
Flow rate kv / kvs
0…30%:
Linear
30…100%: Equal-percentage
ngl = 3 as per VDI / VDE 2173
For certain valve lines and high kvs values,
the valve characteristic is optimized for
maximum volumetric flow kV100.
For valves:
VVF43.125-250
VVF43.150-400
VVF53.125-250
VVF53.150-400
Flow rate kv / kvs
Stroke H / H100
0…100%:
Linear
Stroke H / H100
3-port valves
Throughport A-AB
0...30%:
Linear
30...100%: Equal-percentage
ngl = 3 as per VDI / VDE 2173
For certain valve lines and high kvs values,
the valve characteristic is optimized for
maximum volumetric flow kv100.
Flow rate kv / kvs
2.11.2
Bypass B-AB
0...100%: Linear
Stroke H / H100
Mixing:
Diverting:
constant flow
variable flow
bypass (variable flow)
Flow from port A and port B to port AB
Flow from port AB to port A and port AB
Throughport A-AB
0...100%: Linear
Bypass B-AB
0...100%: Linear
Flow rate kv / kvs
For valves:
VXF43.125-250
VXF43.150-400
VXF53.125-250
VXF53.150-400
Port AB =
Port A =
Port B =
Stroke H / H100
35 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.12
Operating pressure and medium temperature
2.12.1
ISO 7005 and EN 1092 – a comparison
ISO 7005 and EN 1092 cover PN-classified, round flanges for pipes, valves, plain
fittings and accessories, plus their dimensions and tolerances, categorized
according to different types of materials.
Both standards also contain the assignment of pressures and medium
temperatures.
The connecting dimensions, flange and face types plus descriptions conform to the
relevant ISO 7005 standards.
 ISO 7005, part 1: Steel flanges
 ISO 7005, part 2: Cast iron flanges
 ISO 7005, part 3: Flanges made of copper alloys
Since the valves covered by this document are used throughout the world, the
international standard ISO 7005 was selected as a basis. The information given
below explains the differences between ISO 7005 and EN 1092.
EN 1092: Part 1,
steel flanges
The international standard ISO 7005-1 on steel flanges was used as a basis for the
development of EN 1092. EN 1092 deviates from ISO 7005 in the following ways:
 It solely covers flanges with PN designation
 A number of technical requirements of flanges originating from DIN standards
have been changed
The differences between EN 1092-1 and ISO 7005-1 are as follows:
 In many cases, the pressure-temperature assignments of this standard have
been reduced, either by limiting the assignments at lower temperatures – which
may no longer exceed the value of the PN class – or by increasing the rate at
which the admissible pressure drops on temperature rise
 In addition to the PN 2.5 – PN 40 range of flanges originating from DIN
standards, which is defined in ISO 7005, EN 1092 also contains flanges up to
PN 400
EN 1092: Part 2,
cast iron flanges
In terms of flanges of the same PN class, this standard refers to ISO 7005-2 and
ISO 2531. Flange types and connecting dimensions are compatible with the same
DN and PN class of ISO 7005 and ISO 2531.
 Pressure-temperature assignments: There are no differences between EN 10922 and ISO 7005-2
EN 1092: Part 3, flanges
made of copper alloys
In terms of flanges of the same PN class, this standard refers to ISO 7005-3.
Flange types and connecting dimensions are compatible with the same DN and PN
class of ISO 7005.
 Pressure-temperature assignments: There are no differences between EN 10923 and ISO 7005-3
To be able to make use of the permissible operating pressures and operating
temperatures according to EN 1092-1 as listed in the following tables/graphs, highquality steel is required when using steel flanges.
Otherwise, the permissible plant operating pressures must be reduced as specified
in EN 1092-1.
36 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Fluids
with V..F43..
Operating pressure [bar]
2.12.2
PN 16 valves with flanged connections
16
15
14
13
12
1
0
-20
0
20
80
100
120
140
160
180
200
220
240
Medium temperature [°C]
Curve for saturated steam; steam forms below this line
Operating pressure according to EN 1092, valid for 2-port valves with
blank flange
Operating pressure and operating temperatures as per ISO 7005, EN 1092
and EN 12284
Saturated steam
Superheated steam
with VVF43..
 V..F53..: Applies when these valves are used in PN 16 plants
 All relevant local directives must be observed
Abs. operating pressure [bar]
Notes
Medium temperature [°C]
Wet steam
Saturated steam
Superheated steam
A
B
To be avoided
Permissible operating range
Subcritical pressure ratio
Supercritical pressure ratio
37 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.12.3
Operating pressure [bar]
Fluids
V..F53..
PN 25 valves with flanged connections
25
24
23
22
21
20
19
18
1
0
-20 -10 0
20
80
100 120 140 160 180 200 220 240
Medium temperature [°C]
Curve for saturated steam; steam forms below this line
Operating pressure according to EN 1092, valid for 2-port valves with
blank flange
Operating pressure and operating temperatures as per ISO 7005, EN 1092
and EN 12284
Saturated steam
Superheated steam
VVF53..
 All relevant local directives must be observed
Abs. operating pressure [bar]
Note
Medium temperature [°C]
Wet steam
Saturated steam
Superheated steam
A
B
To be avoided
Permissible operating range
Subcritical pressure ratio
Supercritical pressure ratio
38 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.13
Cavitation
Due to high speeds of the medium in
the narrowest section of the valve, local
underpressure occurs (p2). If this
pressure drops below the medium’s
boiling pressure, cavitation occurs
(steam bubbles), possibly leading to
material removal (abrasion). Also, when
cavitation sets in, the noise level
increases abruptly. Cavitation can be
avoided by limiting the pressure
differential across the valve as a
function of the medium temperature and
the prepressure.
Progression of speed
Progression of pressure p
pmax = differential pressure with valve almost fully closed at
which cavitation can largely be avoided
p1
= static pressure at valve inlet
p3
= static pressure at valve outlet
M
= pump

= water temperature
Example for lowtemperature hot water
Pressure p1 at valve inlet: 500 kPa (5 bar)
Water temperature:
120 °C
From the chart above it can be seen that with the valve almost fully closed, the
maximum permissible differential pressure pmax is 200 kPa (2 bar).
39 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Example for cold water
Spring water cooling as an example for avoiding cavitation:
Cold water
= 12 °C
p1
= 500 kPa (5 bar)
p4
= 100 kPa (1 bar)
(atmospheric pressure)
pmax
= 300 kPa (3 bar)
p3-3’
= 20 kPa (0.2 bar)
pD (throttle) = 80 kPa (0.8 bar)
p3’
= pressure downstream
from the consumer in
kPa
Note
To avoid cavitation in the case of cold water circuits, it must also be made certain
that there is sufficient static counter-pressure at the valve’s outlet. This can be
ensured by installing a throttling valve downstream from the heat exchanger, for
example. In that case, the maximum pressure drop across the valve should be
selected according to the 80 °C curve in the flow chart above on page 39.
2.14
Medium quality and medium treatment
All relevant local directives must be observed whenever it comes to water quality,
corrosion or contamination.
2.14.1
Water
Note
 Water treatment as per VDI 2035 to avoid boiler scale and damage due to
corrosion on the water side
 The requirements of DIN EN 12953-10 should be observed
 Local guidelines and directives should be observed
Planning
Install a strainer (dirt trap).
Installation and
commissioning
 The company making the installation is responsible for the water quality in HVAC
plants
 Before filling a hydraulic HVAC circuit with water, the installer must observe the
specifications of suppliers regarding water quality. If such specifications or
regulations are not observed, severe damage to the plant can occur
 When commissioning a plant, the company that made the installation is obliged
to write a commissioning report including information about water quality and
filling (plant volume) and, if necessary, about water treatment and the additives
used
Recommendation
Keep a plant record.
Maintenance and
service
The installer should check hydraulic HVAC circuits at least once a year.
Before adding water to a hydraulic HVAC circuit, the installer must observe the
specifications of suppliers regarding water quality (water treatment as per VDI
2035). If such specifications or regulations are not observed, severe damage to the
plant can occur.
When adding water at a later stage, the company that made the installation is
obliged to write a commissioning report including information about water quality
and the filling (plant volume) and, if necessary, about water treatment and the
additives used.
40 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Recommendation
To prevent boiler scale and damage resulting from corrosion, the water quality in
open or closed plants must be checked at regular intervals. The plant record must
always be kept up to date.
2.14.2
Note
Water with antifreeze
For water with antifreeze, such as ethylene glycol or propylene glycol, the supplierspecific values for the density ρ, the specific heat capacity c, and the kinematic
viscosity ν are to be determined by way of concentration and medium temperature.
These values must be observed when sizing valves to make certain that correct kvs
values are obtained.
In the case of antifreeze concentrations with a kinematic viscosity of < 10 mm2/s,
correction factors for the sizing of valves are not required. Refer to chapter "2.8.3
Impact of fluid properties on valve sizing", page 23.
Planning
 The type of antifreeze (product and dosage) added to the system must be
approved by the supplier for use in HVAC plants
 If several additives are used (e.g. antifreeze and hardness stabilizers), the
required combination must be approved by the same supplier
 Install a strainer (dirt trap)
Installation and
commissioning
 The company making the installation is responsible for the correct antifreeze
concentration and water quality in HVAC plants
 Before filling a hydraulic HVAC circuit with a medium, the installer must observe
the specifications of the supplier. If such specifications or regulations are not
observed, severe damage to the plant can occur
 When commissioning a plant, the company that made the installation is obliged
to write a commissioning report including information about water quality,
antifreeze concentration and filling (plant volume) and, if necessary, about water
treatment and the additives used
Recommendation
Keep a plant record.
Maintenance and
service
The installer should check hydraulic HVAC circuits at least once a year.
According to supplier specifications, the antifreeze concentration, the pH value,
and the concentration of inhibitors must be checked once a year, for example.
Recommendation
The antifreeze concentration and water quality in open or closed HVAC plants must
be checked at regular intervals. The plant record must always be kept up to date.
41 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.14.3
Note
Deionized, demineralized water and super-clean water
These media have an impact on valve selection (material of O-rings, gaskets,
plug/seat, and valve body). Compatibility must be checked.
Deionized water
Demineralized water
Super-clean water
The ions of salts
contained in the water
have been removed
The minerals contained in
the water have been
removed
Intensely treated water with a high specific
resistance and containing no organic
substances
To avoid corrosion and to ensure a long service life of the valves, gaskets and
plugs, the following limits must be observed:
 Oxygen:
< 0.02 mg/l
 pH value:
8.2…8.5
 Electric conductance:
< 5 Si
 Sum of alkaline earths: < 0.0051 mmol/l
 Hardness:
< 0.03 °dH
Planning


Installation and
commissioning
 The company making the installation is responsible for the quality of the media
used
 Before filling a hydraulic HVAC circuit with a medium, the installer must observe
the supplier’s specification. If such specifications or regulations are not
observed, severe damage to the plant can occur
 When commissioning a plant, the company that made the installation is obliged
to write a commissioning report including information about medium quality and
filling (plant volume) and, if necessary, about water treatment and additives used
Recommendation
Keep a plant record.
Maintenance, service
The installer should check hydraulic HVAC circuits at least once a year.
Recommendation
The quality of the medium used in open or closed HVAC plants must be checked at
regular intervals. The plant record must always be kept up to date.
The media must be approved by the supplier for use in HVAC plants
Install a strainer (dirt trap)
2.14.4
Note
Heat transfer oil (thermal oil)
Heat transfer oil has an impact on valve selection (material of O-rings and
gaskets). Compatibility must be checked.
When planning and commissioning a plant or when sizing valves, the suppliers’
specifications must be observed. To make certain the right type of heat transfer oil
is used, one should rely on the suppliers’ experience and know-how.
When using heat transfer oil (thermal oil), the following supplier-specific values
must be taken into consideration:
 Correction factor FR, if the supplier-specific kinematic viscosity ν exceeds
10 mm2/s
 Density ρ
 Room and operating temperature
 During the heating up phase, the kinematic viscosity ν is very high. The
volumetric flow is much smaller than planned and thus the available amount of
energy Qheating up phase as well. This must be taken into account during the
planning phase and when sizing the valve
42 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Refer to chapter "2.8.3 Impact of fluid properties on valve sizing", page 23.
Types of heat
transfer oil





Planning
Install a strainer (dirt trap).
Installation and
commissioning
 The company making the installation is responsible for the quality of the media
used
 Before filling a hydraulic HVAC circuit with a medium, the installer must observe
the supplier’s specification. If such specifications or regulations are not
observed, severe damage to the plant can occur
 When commissioning a plant, the company that made the installation is obliged
to write a commissioning report including information about medium quality and
filling (plant volume) and, if necessary, about water treatment and the additives
used
Recommendation
Keep a plant record.
Maintenance and
service
The installer should check hydraulic HVAC circuits at least once a year.
Heat transfer media on the basis of mineral oil
Synthetic heat transfer fluids
Organic heat transfer fluids as per DIN 4754
Heat transfer media of a uniform substance or mixture
Heat transfer oils on the basis of silicon
Before adding medium to a hydraulic HVAC circuit, the installer must observe the
supplier’s specification. If such specifications or regulations are not observed,
severe damage to the plant can occur.
When adding medium at a later stage, the company that made the installation is
obliged to write a commissioning report including information about the quality of
the medium and the filling (plant volume) and, if necessary, about treatment and
additives used.
Recommendation
The quality of the medium in open or closed plants must be checked at regular
intervals. The plant record must always be kept up to date.
2.15
Engineering notes
2.15.1
Strainer (dirt trap)
Open and closed HVAC plants require a strainer (dirt trap). This improves the
quality of the water, ensures proper functioning of the valve, and a long service life
of the HVAC plant with its components.
43 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.15.2
Avoiding flow noise
To reduce flow noise, abrupt
reductions in pipe diameters, tight
pipe bends, sharp edges or
reductions in the vicinity of valves
should be avoided. A settling path
should be provided.
Recommendation:
 L ≥ 10 x DN, at least 0,4 m
Also, the flow must be free from
cavitation (refer to Cavitation page
39).
2.15.3
Avoiding false circulation
When 3-port valves in HVAC plants are fully closed, false circulation can occur
when hot water rises or when water is pulled away near rectangular pipe
connections.
Note
False circulation can be avoided by proper planning – with almost no extra cost –
but remedy is usually very costly in existing plants.
Measures against
false circulation
 Observe guide value for the water speed: 0.5…1 m/s.
The lower the water speed, the smaller the risk that the diverted flow pulls water
from the critical piping section. If required, balancing valves can be installed to
improve flow conditions
 Observe a certain distance between bypass and collector/header or short-circuit:
H ≥ 10 x pipe dia., minimum 400 mm
or
 Installation of a check valve or gravity brake R with small spring pressure in the
critical piping section, aimed at ensuring a minimum flow in the opening range
44 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
 Welded elbows.
2.15.4
Thermal insulation
Insulated pipes and valves save
energy.
Actuators must never be insulated.
This is to make certain that heat
produced by the actuator can be
dissipated, thus preventing
overheating.
Recommendation:
Thermal insulation of pipes and
valves conforming to EnEV 2009
Recommendation 1)
1)
#
Type of pipes/valves
Minimum thickness of
thermal insulation
1
Inside diameter up to 22 mm
20 mm
2
Inside diameter 22…35 mm
30 mm
3
Inside diameter 35…100 mm
Same as inside diameter
4
Inside diameter > 100 mm
100 mm
5
Through walls and ceilings, at pipe crossings
and connections, at central network distributors
½ of requirements of
# 1…4
6
Pipes of central heating systems which, after
January 31, 2002, were installed between
heated rooms of different users
½ of requirements of
# 1…4
7
Pipes according to # 6 in the floor’s structure
6 mm
8
Cooling energy distribution/cold water pipes
and valves of room ventilation and air
conditioning systems
6 mm
Applies to a heat conductance of 0.035 W/(m·K)
When using materials with a heat conductance other than 0.035 W/(m·K), the
minimum thickness of the insulating layers must be appropriately adapted. For the
conversion and heat conductance of insulating material, the calculation methods
and data applied by established technical rules must be used.
45 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
2.16
Warranty
The engineering data listed in chapter "Type summary and equipment
combinations" on page 11 are ensured only when the valves are used in
connection with the specified Siemens actuators.
Note
If the valves are used in combination with actuators supplied by thirds, proper
functioning must be ensured by the user himself and Siemens Building
Technologies will assume no liability.
46 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Engineering
CE1P4030en
12.09.2011
Note
3
Handling
3.1
Mounting and installation
The valves must be installed free from distortion:
3.1.1
Mounting positions
Indoors
1)
Outdoors
1)
Only in combination with weather shield ASK39.1 and actuators SAX..
Mounting positions apply to both 2- and 3-port valves.
3.1.2
Direction of flow for fluids and steam
For general illustration and further details, refer to chapter "4.3 Technical and
mechanical design", page 53.
2-port valves
Steam
Fluids
VVF43.., VVF53..
Closing against the pressure
VVF43.., VVF53..
Closing with the pressure
47 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Handling
CE1P4030en
12.09.2011
3-port valves
Fluids
Mixing valve (preferred use)
3.1.3
Diverting valve
Flanges
To ensure that flanges are correctly connected, the nominal, maximum and
minimum tightening torques must be observed. They depend on the strength and
size of the bolts and nuts, the material of the flanges, the PN class, the flange
gaskets used and the medium in the hydraulic system.
The tightening torques also depend on the specification of the gasket supplier and
must be observed, using a torque wrench.
To determine the right tightening torques, refer to the suppliers’ specifications.
According to EN 1515-1, the selection of materials for bolts and nuts is also
dependent on the PN class, the temperatures, and other operating conditions, such
as the type of medium.
Recommendation
Procedure
Use a torque wrench.
1. Clean the flanges.
2. Place the gaskets between the flanges.
3. Fit the bolts, washers and nuts and tighten
them by hand.
4. Tighten the bolts crosswise in 3 steps as
shown below (M = tightening torque):
 Step 1: 25% M
 Step 2: 50% M
 Step 3: 100% M
48 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Handling
CE1P4030en
12.09.2011
1 to 8 = order for tightening the bolts
M = tightening torque
Notes:
• Too low or too high tightening torques can cause leakage at the
flange connections or even lead to broken flanges
• Observe the following table "Guide values for tightening torques",
page 49
5. When the operating temperature is reached, retighten the bolts.
Guide values for
tightening torques
DN
15
20
25
32
Max. tightening torque [Nm]
PN 6
PN 10
1)
1)
1)
1)
PN 16
PN 25
40
40
40
120
PN 40
40
40
40
120
1)
40
50
65
80
100
125
150
-
-
1)
1)
120
120
120
120
120
120
120
120
120
120
120
200
200
120
300
300
200
300
300
V..F43.. is available only in nominal diameters of DN 65…150, for smaller nominal diameters use
V..F53..
49 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Handling
CE1P4030en
12.09.2011
3.1.4
Stem heating element ASZ6.6
Scope of delivery
1 Stem heating element ASZ6.6
1 screw M4 x 30 mm including nut
To fit the stem heating element, stroke actuator and valve must be assembled. The
stem heating element is powered separately.
Special notes on
mounting
Prior to mounting, check the following:
1. Actuator and Siemens valve are assembled.
2. Observe compatibility and choice of combinations.
1
10 mm
14 mm
3
Note
Valve lines V..F43/53..
2
4
8 mm
When using a stem heating element and medium temperatures are below -5 °C,
the stem sealing gland must be replaced.
In that case, the sealing gland must be ordered also (stock number 4 284 8806 0).
3.1.5
Thermal insulation
Refer to "Thermal insulation", page 45
50 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Handling
CE1P4030en
12.09.2011
3.2
Commissioning and maintenance
3.2.1
Commissioning
The valve may be put into operation only if actuator and valve are correctly
assembled.
Note
Ensure that actuator stem and valve stem are rigidly connected in all positions.
Function check
Valve
Throughport AAB
Bypass BAB
Valve stem extends
Closes
Opens
Valve stem retracts
Opens
Closes
3.2.2
Maintenance
The valves are maintenance-free.
3.3
Disposal
Before disposal, the valve must be dismantled and separated into its various
constituent materials.
Legislation may demand special handling of certain components, or it may be
sensible from an ecological point of view.
All local and currently valid legislation must be observed.
51 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Handling
CE1P4030en
12.09.2011
4
Functions and control
4.1
Selection of acting direction and valve
characteristic
The valve’s characteristic and acting direction (push to open, pull to open, normally
open, normally closed) have an impact on the acting direction and valve
characteristic selected with the actuator’s DIL switches as well as on the required
function in the event of a power failure (actuator with or without spring return
function).
The objective is the following: As the positioning signal Y increases, the volumetric
flow V through the valve shall rise or, in the event of a power failure, the valve shall
fully open, V = 100% (NO = normally open), or fully close, V = 0% (NC = normally
closed), depending on plant requirements.
Push to open
Pull to open
Direct
Reverse
Actuator
pushing
DIL switches
Acting direction
Flow
characteristic
Without
spring return
function
No power
applied
DIL switches
Acting direction
No power
applied
DIL switches
Acting direction
Flow
characteristic
With spring
return
function
No power
applied
DIL switches
Acting direction
With spring
return
function
Linear
Equalpercentage
Maintains the position
Flow
characteristic
Without
spring return
function
Equalpercentage
Linear
No mechanical stroke inverter required
Selection of acting direction via DIL switch
Direct
Linear
Reverse
Equalpercentage
Linear
Equalpercentage
Closed (NC function)
V = 0%
Open (NO function)
V = 100%
Reverse
Direct
Flow
characteristic
Linear
No power
applied
Fully open (NO function)
V = 100%
Equalpercentage
Linear
Equalpercentage
Fully closed (NC function)
V = 0%
52 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Functions and control
CE1P4030en
12.09.2011
4.2
Calibration
Calibration must be performed when valve and actuator are correctly assembled.
4.3
Technical and mechanical design
The illustrations below only show the valves’ basic design; constructional features,
such as the shape of plugs, may differ.
2-port valves
Note
3-port valves
Closing against the pressure
Closing with the pressure
2-port valves do not become 3-port valves by removing the blank flange!
Mixing valve (preferred use)
Diverting valve
Depending on the nominal valve size, a guided parabolic, perforated or slot plug is
used – rigidly connected to the valve stem.
The seat is pressed into the valve body together with a special sealing compound.
53 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Functions and control
CE1P4030en
12.09.2011
4.3.1
Plug stop
The built-in plug stop …
 supports secure guidance of the plug in all stroke positions,
 prevents the head of the stem from immersing into the sealing gland, thus
avoiding damage to the seal,
 prevents loss of plug as long as no actuator is fitted.
4.3.2
Valve stem, valve neck, coupling
 The diameter of the valve stem is
10 mm with all types of valves
 The same valve stem design ensures
compatibility with the actuators
1
2
3
4
4.3.3
Valve stem
Valve neck
Valve stem coupling
Valve neck coupling
Converting a 2-port to a 3-port valve
Is is not possible to convert a 2-port valve to a 3-port valve.
2-port valves do not become 3-port valves by removing the blank flange!
4.3.4
Converting a 3-port to a 2-port valve
Every type of 3-port valve can be converted to a 2-port valve.
Notes
In that case, the type plate is no longer in compliance with the valve’s function.
Siemens does not supply replacement type plates.
54 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Functions and control
CE1P4030en
12.09.2011
4.3.5
Flange types
Flanges, flange dimensions and flange connections conform to ISO 7005 and
EN 1092 respectively.
Valve types
 2-port valves
 3-port valves
Flange type
Type 21 (integral flange) as per ISO 7005 is an integral component of a pressure
device.
VVF..
VXF..
Type B
(raised face)
Type B1
Type of flange and
flange face
The illustration shows the
transition from the flange
to the valve body of the
V..F.. valves (not true to
scale, faces only outlined)
Gaskets
In the case of ISO 7005, the gaskets do not constitute part of the standard – in
contrast to EN 1092.
Note
Up to DN 50, PN 25 is
also used for PN 16
Up to DN 50, the flange dimensions of
pressure classes PN 16 and PN 25 are
identical. For this reason, for kvs values
≤ 40 m3/h and nominal sizes ≤ DN 50,
the valves of the V..F53.. line (PN 25)
are listed in place of the valves of the
V..F43.. line (PN 16).
Connecting dimensions
[mm]
PN 16/PN 25 to DN 50
DN
D
Outside
diameter of
flange
10
90
60
14
4
M12
15
95
65
14
4
M12
20
105
75
14
4
M12
25
115
85
14
4
M12
32
140
100
18
4
M16
40
150
110
18
4
M16
50
165
125
18
4
M16
K
D2
Diameter of bolt Diameter of
circle
bolt holes
Bolts
Quantity
Size
55 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Functions and control
CE1P4030en
12.09.2011
5
Function data
Technical data
V..F43..
V..F53..
PN 16
PN 25 (PN 16)
Flanged
Within the range of the permissible medium temperature according to the charts on pages
37…38
PN class
Type of connection
Operating pressure
1)
Valve characteristic
Throughport
0…30%
30…100%
3
kvs = 250 / 400 m /h
Bypass
Leakage
Throughport
rate
Bypass
Media
Materials
Dimensions
Weight
Connections
Cold water
Low-temperature hot
water
High-temperature hot
water
Water with antifreeze
Cooling water
Drinking water
Brines
Saturated steam
Superheated steam
Heat transfer oils
Medium temperature
Also refer to page 36
Rangeability SV
DN 15, kvs ≤ 1.25
DN 15, kvs > 1
DN 20
DN 25
DN 32
DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
Nominal stroke
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
Valve body
Blank flange
VVF..
Valve stem
Seat
Plug
2)
Stem sealing gland
Adapter
Flanged
Linear
Equal-percentage; ngl = 3 to VDI / VDE 2173
Linear
Linear
0…0.01% of kvs value (class IV)
0.5…2% of kvs value with SKD.., SKB.., and SKC..
0.05% of kvs value with SAX..
According to the table on page 9, "2.2.1 Compatibility with medium and temperature ranges"
-20…220 °C
2)
> 50
> 100
> 100
-
20 mm
40 mm
40 mm
EN-GJS-400-18-LT
P265GH
Stainless steel
Stainless steel
Stainless steel
Stainless steel
FEPM (silicone-free)
ALF41B.. Steel S235JRG2
See table on page 58
See table on page 58
ISO 7005
-
Valves VVF..,VXF..
Technical data
CE1P4030en
12.09.2011
56 / 70
Siemens
Building Technologies
Environmental
conditions
Operation
Class
Temperature
Rel. humidity
Storage
Class
Temperature
Rel. humidity
Transport
Standards
Class
Temperature
Rel. humidity
Pressure Equipment Directive
Pressure-carrying accessories
Fluid group 2
Without CE certification as
per article 3, section 3
(sound engineering practice)
Category I, with CE
certification
Category II, with CE
certification, notified body
identification number 0036
PN class
Operating pressure
Length of flanged valves
Valve characteristic
Leakage rate
Water treatment
Environmental conditions
Environmental compatibility
1)
2)
3)
V..F43..
IEC 60721-3-3
3K5, 3Z11
-15…+55 °C
5…95% r.h.
IEC 60721-3-1
1K3 extended
-15…+55 °C
5…95% r.h.
IEC 60721-3-2
2K3, 2M2
-30…+65 °C
< 95% r.h.
PED 97/23/EC
According to article 1, section 2.1.4
PN 16
≤ DN 50
V..F53..
PN 25
≤ DN 40
DN 65…125
DN 50…100
DN 150
DN 125…150
ISO 7268
ISO 7005, DIN EN 12284
DIN EN 558-1, line 1 (flanges to ISO 7005), without PN 6
VDI 2173
Throughport, bypass as per EN 60534-4 / EN 1349
VDI 2035
Storage: IEC 60721-3-1
Transport: IEC 60721-3-2
Operation: IEC 60721-3-3
ISO 14001 (environment)
ISO 9001 (quality)
SN 36350 (environmentally compatible products)
RL 2002/95/EC (RoHS)
-
For certain valve lines and high kvs values, the valve characteristic is optimized for maximum
volumetric flow kV100
For medium temperatures < -5 °C, the stem sealing gland must be replaced. The sealing gland must
be ordered separately, stock number 4 284 8806 0.
Medium temperatures > 220°C are permitted for heat transfer oils only
57 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Technical data
CE1P4030en
12.09.2011
6
Dimensions
Dimensions in mm, weight in kg
Note
VVF43..
Product
number
VVF43..
B
DN
65
80
100
125
150
22.1
28.1
34.1
46.6
67.5
ØD
Ø D1
Ø D2
L1
L2
L3
ØK
H1
H2
17
17
17
17
17
185
200
220
250
284
118
132
156
184
211
19 (4x)
19 (8x)
19 (8x)
19 (8x)
23 (8x)
290
310
350
400
480
145
155
175
200
240
178
190
206
233
275,5
145
160
180
210
240
115
115
146
159
186.5
231,5
231,5
262,5
275,5
303
B
ØD
Ø D1
Ø D2
L1
L2
L3
ØK
H1
H2
SAX..
-
SKD..
-
H
SKB..
-
SKC..
690
690
721
734
762
SAX..
505
505
505
502
502
542
-
SKD..
563
563
563
560
560
600
-
H
SKB..
638
638
638
635
635
675
-
SKC..
690
690
721
734
762
VVF53..
Product
number
VVF53..
DN
15
20
25
32
40
50
65
80
100
125
150
4.2
5.4
6.1
8.8
10.2
13.7
21.8
28.1
38
51.9
74.1
14
16
15
17
16
16
17
17
17
17
17
95
105
115
140
150
165
185
200
235
270
297
46
56
65
76
84
99
118
132
156
184
211
14 (4x)
14 (4x)
14 (4x)
19 (4x)
19 (4x)
19 (4x)
19 (8x)
19 (8x)
23 (8x)
28 (8x)
28 (8x)
130
150
160
180
200
230
290
310
350
400
480
65
75
80
90
100
115
145
155
175
200
240
87,5
99,5
104,5
119
129
146
178
190
212,5
242
284
65
75
85
100
110
125
145
160
190
220
250
63
63
63
60
60
100
115
115
146
159
186.5
159,5
144,4
159,5
156,5
156,5
196,5
231,5
231,5
262,5
275,5
303
58 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Dimensions
CE1P4030en
12.09.2011
VXF43..
Product
number
VXF43..
B
DN
65
80
100
125
150
17.1
21.2
27.1
37.1
54.5
ØD
Ø D1
Ø D2
L1
L2
L3
ØK
H1
H2
17
17
17
17
17
185
200
220
250
284
118
132
156
184
211
19 (4x)
19 (8x)
19 (8x)
19 (8x)
23 (8x)
290
310
350
400
480
145
155
175
200
240
145
155
175
200
240
145
160
180
210
240
115
115
146
159
186.5
231.5
231.5
262.5
275.5
303
B
ØD
Ø D1
Ø D2
L1
L2
L3
ØK
H1
H2
SAX..
-
SKD..
-
H
SKB..
-
SKC..
690
690
721
734
762
SAX..
505
505
505
502
502
542
-
SKD..
563
563
563
560
560
600
-
H
SKB..
638
638
638
635
635
675
-
SKC..
690
690
721
734
762
VXF53..
Product
number
VXF53..
DN
15
20
25
32
40
50
65
80
100
125
150
3.2
4.1
4.6
6.1
7.2
9.8
16.8
21.2
29
39.7
57
14
16
15
17
16
16
17
17
17
17
17
95
105
115
140
150
165
185
200
235
270
297
46
56
65
76
84
99
118
132
156
184
211
14 (4x)
14 (4x)
14 (4x)
19 (4x)
19 (4x)
19 (4x)
19 (8x)
19 (8x)
23 (8x)
28 (8x)
28 (8x)
130
150
160
180
200
230
290
310
350
400
480
65
75
80
90
100
115
145
155
175
200
240
65
75
80
90
100
115
145
155
175
200
240
65
75
85
100
110
125
145
160
190
220
250
63
63
63
60
60
100
115
115
146
159
186.5
159.5
159.5
159.5
156.5
156.5
196.5
231.5
231.5
262.5
275.5
303
59 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Dimensions
CE1P4030en
12.09.2011
7
VVF..
Revision numbers
Product number
VVF43.65-50
VVF43.65-63
VVF43.80-80
VVF43.80-100
VVF43.100-125
VVF43.100-160
VVF43.125-200
VVF43.125-250
VVF43.150-315
VVF43.150-400
-
VXF..
Product number
VXF43.65-63
VXF43.80-100
VXF43.100-160
VXF43.125-250
VXF43.150-400
-
Valid from
rev. no.
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
Valid from
rev. no.
..A
..A
..A
..A
..A
Product number
VVF53.15-0.16
VVF53.15-0.2
VVF53.15-0.25
VVF53.15-0.32
VVF53.15-0.4
VVF53.15-0.5
VVF53.15-0.63
VVF53.15-0.8
VVF53.15-1
VVF53.15-1.25
VVF53.15-1.6
VVF53.15-2
VVF53.15-2.5
VVF53.15-3.2
VVF53.15-4
VVF53.20-6.3
Product number
VXF53.15-1.6
VXF53.15-2.5
VXF53.15-4
VXF53.20-6.3
VXF53.25-6.3
VXF53.25-10
VXF53.32-16
VXF53.40-16
Valid from
rev. no.
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
Valid from
rev. no.
..A
..A
..A
..A
..A
..A
..A
..A
Product number
VVF53.25-5
VVF53.25-6.3
VVF53.25-8
VVF53.25-10
VVF53.32-16
VVF53.40-12.5
VVF53.40-16
VVF53.40-20
VVF53.40-25
VVF53.50-31.5
VVF53.50-40
VVF53.65-63
VVF53.80-100
VVF53.100-160
VVF53.125-250
VVF53.150-400
Product number
VXF53.40-25
VXF53.50-40
VXF53.65-63
VXF53.80-100
VXF53.100-160
VXF53.125-250
VXF53.150-400
-
Valid from
rev. no.
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
..A
Valid from
rev. no.
..A
..A
..A
..A
..A
..A
..A
60 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Revision numbers
CE1P4030en
12.09.2011
8
Addendum
8.1.1
Abbreviations
Abbreviation
c
DN
FR
H
H0
Unit
[kJ/kgK]
[mm]
[m]
Term
Specific heat capacity
Nominal size
Correction factor
Stroke
Shutoff head
kv
[m3/h]
Nominal flow
kvr
[m3/h]
-
kvs
[m3/h]
Nominal flow
m
[kg/h]
PN
-
Mass flow
Steam mass flow
PN class
Pv
Q100
Qmin
[kW]
[kW]
rp1
Sv
V100
p
pmax
[kJ/kgK]
[m3/h],
[l/s]
[kg/m3]
[mm2/s],
[cSt]
[kPa]
[kPa]
pMV
[kPa]
-
ps
[kPa]
Closing pressure
pv0
[kPa]
-
pv100
[kPa]
Differential pressure at
nominal flow rate
pVR
T
[kPa]
[K]
Temperature spread
ρ
υ
Valve authority
Rated capacity
Rangeability
Volumetric flow
Density
Kinematic viscosity
Differential pressure
Max. differential
pressure
Explanation
See "Specific heat capacity", page 62
Characteristic for matching parts of a piping system
Factor for impact of valve’s Reynolds number
Travel of valve or actuator stem
Pump head when medium is supplied. The head
generated by a pump when the valve is fully closed
Amount of cold water (5…30 °C) passing through the
valve at the respective stroke and at a differential
pressure of 100 kPa (1 bar)
Smallest volumetric flow that can be controlled, that
is, when the valve starts to open (opening step)
Nominal flow rate of cold water (5…30 °C) through
the fully open valve (H100) at a differential pressure of
100 kPa (1 bar)
Characteristic relating to the combination of
mechanical and dimensional properties of a
component in a piping system
See "Valve authority Pv", page 62
Design capacity of plant
Smallest output of a consumer that can be controlled
in modulating mode
Specific heat capacity of steam
See "Rangeability SV", page 62
Volume per unit of time through the fully open valve
(H100)
Mass per volume
1 mm2/s = 1 cSt (centistoke), also refer to 2.8.3.3
Kinematic viscosity ν, page 24
Pressure difference between plant sections
Maximum permissible differential pressure across
the valve’s throughport (control path) for the entire
positioning range of the motorized valve
Differential pressure across the section with variable
flow
Maximum permissible differential pressure at which
the motorized valve still closes securely against the
pressure
Maximum differential pressure across the valve’s
fully closed throughport (control path)
Differential pressure across the fully open valve and
the valve’s throughport A – AB at the volumetric flow
V100
Differential pressure of flow and return
Temperature difference of flow and return
61 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
8.1.2
Important formulas
Value
Differential pressure
ΔpV100 across the fully
open valve
Rangeability SV
Formula
Valve authority PV
Header with pressure, variable volumetric
flow
p V100
PV 
p VR
 Header with pressure, constant
volumetric flow
 Header with low differential pressure,
variable volumetric flow
p V100
PV 
p V100  pMV
-
Volumetric flow V100
Water without antifreeze
Q V100
V V100 
1,163  T
Water with antifreeze
Q
 3600
V V100  V100
c    T
[m3/h]
 V
p V100  100   100
 k
 vs
SV 




Unit
[kPa]
2
k vs
k vr
8.1.3
-
Valve-related glossary
DIN EN 14597
Standard on temperature controls and temperature limiters for use in heat
generating plants. This standard also covers actuating equipment (actuating
devices) with safety function for temperature and pressure limitation as per
DIN EN 14597
HIT
The HVAC Integrated Tool (HIT) supports sizing and selection of valves for water
with antifreeze (www.siemens.com/hit)
Actuating device
Combination of valve and actuator
Rangeability SV
Characteristic of an actuating device, used to assess the device’s controllable
range; ratio of the nominal flow rate kvs to the smallest controllable flow kvr
Valve authority Pv
Ratio of the differential pressure across the fully open valve (H100) to the differential
pressure across the valve plus that of the pipe section with variable volume. To
ensure correct control, the valve authority must be a minimum of 0.25
Specific heat capacity
The specific heat capacity is the amount of heat required to heat the mass of 1 kg
of a substance by 1 K.
It increases as the temperature of the substance rises; in the case of gases, also
as the pressure of the substance rises. Therefore, with gases, a distinction is made
between cP, the specific heat at a constant pressure, and cV, the specific heat at a
constant volume
62 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
8.1.4
Hydraulics-related glossary
Film temperature
Temperature of the valve surfaces that are in contact with the heat transfer oil at
which the oil starts to disintegrate
Cavitation
Due to high speeds of the medium in the narrowest section of the valve, local
underpressure occurs. If this pressure drops below the medium’s boiling pressure,
cavitation occurs (steam bubbles), possibly leading to material removal (abrasion).
Also, when cavitation starts, the noise level increases abruptly. Cavitation can be
avoided by limiting the pressure differential across the valve as a function of the
medium temperature and the prepressure. For more detailed information, refer to
"2.13 Cavitation", page 39
Selection of valve
characteristic
Certain types of Siemens actuators are equipped with DIL switches for the
selection of a linear or an equal-percentage valve characteristic. The objective is to
linearize the volumetric flow through the consumer and the valve
Closed circuit
The medium circulates in a closed hydraulic system with no contact to the
atmosphere
Open circuit
The circulating medium is in contact with the atmosphere, that is, the hydraulic
system is open to atmosphere (e.g. cooling towers with open tanks, or showers).
Hence, the system can absorb oxygen from the surrounding air, which can lead to
rust; in addition, more attention is to be paid to cavitation; for more information,
refer to "2.13 Cavitation", page 39
Control stability
The stability of a closed control loop depends on the degree of difficulty S of the
controlled system and the circuit amplification V0. For more detailed information,
refer to the Siemens brochure "Control technology" (ordering no. 0-91913-en)
Return temperature TRL
Temperature of the medium at which it returns from the consumer to the heat or
cooling source
Gravity circulation
The density of a medium depends on its temperature. If a medium is hot in one
place and cold in another, it starts to circulate due to different densities
Volumetric flow V
Volume of a medium that passes through an opening for a certain time
Flow temperature TVL
Temperature of a heating or cooling medium at which it leaves its source to enter a
hydraulic circuit
Selection of acting
direction
Certain types of Siemens actuators are equipped with DIL switches for selection of
the operating action of the respective valve (push to open, pull to open, normally
open, normally closed). The objective is to drive the valve to the fully open or fully
closed position should a power failure occur, depending on plant requirements
Forced control
If forced control is demanded, no consideration is given to any other control
command. For example, if there is risk of frost, more heat is supplied to prevent
freeze-ups
63 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
8.1.5
Media-related glossary
Enthalpy
Amount of energy contained in a thermodynamic system (heat content)
FDA
Food and Drug Administration (USA)
Saturated steam
Boundary between wet and superheated steam;
Wet steam:
Parts of the gaseous water condensate to become very fine
droplets
Superheated steam: "Dry" steam without water droplets
Brine
Solution consisting of salt and water
Heat transfer oil/thermal
oil
Heat transfer fluid on the basis of mineral oil, synthetic, organic, or on the basis of
silicon, uniform or mixed
Water
Chemical compound consisting of oxygen (O) and hydrogen (H). Also refer to VDI
2035 for information on avoiding damage to drinking and domestic hot water plants
Water with antifreeze
The water contains an antifreeze which also inhibits corrosion. For the types of
antifreeze used in the trade, also refer to chapter "8.1.7 Overview of antifreeze and
brines used in the trade", page 64
Glycol
Glycol is added to water to lower the water’s melting point. Examples are ethylene
glycol and propylene glycol. Refer to chapter "8.1.7 Overview of antifreeze and
brines used in the trade", page 64
Water, deionized
The ions of salts contained in the water have been removed
Water, demineralized
The minerals contained in the water have been removed
Water, super-clean water
Specially treated water; various processes are used to remove dissolved salts and
other undesirable substances. It has a high specific resistance and contains no
organic substances
8.1.6
Trade names
Trademark
Legal owner
Acvatix
Siemens
Glythermin
BASF
Antifrogen, Protectogen
Clariant
Dowcal
Dow
Zitrec, Freezium
Arteco NV/SA
TYFOCOR, TYFOXIT
Tyforop Chemie GmbH
GLYKOSOL, PEKASOL, PEKASOLar
Glykol & Sole GmbH
Temper
Temper Technology
8.1.7
Overview of antifreeze and brines used in the trade
The list below is not exhaustive. It specifies manufacturer data and is not to be
regarded as an official approval for Siemens products in the indicated temperature
range. For temperature ranges of individual product lines, see chapter 2.12, page
36.
The notes given under "2.14 Medium quality and medium treatment", page 40 must
also be observed.
64 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
Supplier
Product number
Basic medium
BASF
Glythermin® NF
www.basf.com
Temperature range
of medium
Usage
Heat transfer medium on the basis of ethylene glycol and inhibitors
-35…150 °C
No known
restriction
Glythermin® P 44-00
Basis: Propylene glycol plus
anticorrosion additives
-
-50…150 °C
No known
restriction
Glythermin® P 44-92
Basis: Propylene glycol plus
anticorrosion additives
-
-50…150 °C
No known
restriction
Glythermin® P 82-00
Heat transfer medium for solar plants on the basis of glycol and inhibitors
-27… 170 °C
No known
restriction
Glysantin FC
Basis Ethylene glycol  Automobile
applications, engine test bed
-40°C…120°C
No known
restriction
Antifrogen SOL
Basis: Propylene glycol and glycol
Ready-to-use
with a higher boiling point plus
mixture
anticorrosion additives. Ready to use,
premixed with desalinated water
(frost protection -27 °C)
-27… 170 °C
No known
restriction
Antifrogen KF
Basis: Potassium formate plus
anticorrosion additives
50%
-50…20 °C
Restricted compatibility must
be tested
Antifrogen N
Basis: Monoethylene glycol plus
anticorrosion additives
70%
-35…150 °C
No known
restriction
Antifrogen L
Basis: Propylene glycol plus
anticorrosion additives
100%
-25…150 °C
No known
restriction
Dowcal 10
Heat transfer medium on the basis of ethylene glycol and special inhibitor
-50…170 °C
No known
restriction
www.dow.com/heattrans Dowcal 20
Heat transfer medium on the basis of propylene glycol for higher
temperatures than other propylene
glycol fluids
-45…160 °C
No known
restriction
Dowcal N
Heat transfer medium on the basis of propylene glycol with little acute
toxicity if swallowed; widely used in
the food and beverage industry and
in other sectors to lower the freezing
point
-45…120 °C
No known
restriction
Zitrec MC
Multipurpose heat transfer medium
< 70%
on the basis of monoethylene glycol,
mixed with an adequate amount of
water
-55…120 °C
No known
restriction
Zitrec LC
Multipurpose heat transfer medium
on the basis of monopropylene
glycol, mixed with an adequate
amount of water
< 70%
-55…120 °C
No known
restriction
Zitrec FC
Multipurpose heat transfer medium
on the basis of monopropylene
glycol, mixed with an adequate
amount of water; all substances
contained in the medium are
approved by FDA
< 70%
-50…120 °C
No known
restriction
Zitrec S
Multipurpose heat transfer medium
without glycol, on the basis of a
substance consisting of potassium
formate and sodium propionate
Ready-to-use
mixture
-55…120 °C
Restricted compatibility must
be tested
Freezing and anticorrosion agent,
safe with regard to health, specifically
for keeping food cool and for solar
plants, virtually odourless,
hygroscopic liquid. It is based on
propylene glycol, which poses no
hazard to health and which may be
used as a coolant or heat-transfer
fluid in food processing and water
purification applications.
-25…140 °C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
TYFOCOR® HTL
Ready-to-use heat transfer medium for solar plants with higher thermal
loads, clear, blue-green colored liquid
with a faint odour and is based on
1,2-propylene glycol and
polyethylene glycol.
...170°C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
TYFOCOR® LS
Special, ready-to-use heat transfer
medium, evaporating without residue,
for solar plants with high thermal
loads (vacuum tube collectors);
faint odour, based on physiologically
unobjectionable propylene glycol,
and water.
-25…170 °C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
Clariant
www.antifrogen.de
Water with antifreeze
Dow
Arteco NV/SA
www.zitrec.com/
Tyforop Chemie GmbH TYFOCOR® L
www.tyfo.de/index_deuts
ch.html
Permissible limit
weight fractions
60%
65 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
Supplier
Glykol & Sole GmbH
Product number
Basic medium
Tyfocor
Temperature range
of medium
Usage
Clear, colorless, faint odour liquid,
based on ethylene glycol.
-50…140 °C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
Tyfocor G-LS
Reversibly evaporable special heattransfer fluid based on 1,2-propylene
glycol, for use in solar thermal
systems
…170 °C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
TYFO-SPEZIAL
High-quality, powerful brine,
specifically for use in earth linked
thermal heat pump systems
-10…30 °C
Restricted copper, brass and
bronze material is
not resistant,
test sealing
material in
individual case
GLYKOSOL N
Yellowish fluid on the basis of
25…40%,
monoethylene glycol for use as a
depending on the
heat transfer medium with highly
application
efficient anticorrosion additives and
hardness stabilizers; free from nitrite,
amine and phosphate
-50…170 °C
No known
restriction
GLYKOSL WP
Based on Ethandiol 1,2
(ethyleneglycol)
-
-
Check
permissibility in
individual case
PEKASOL 2000
Aqueous solution of environmentally
safe alkaline earth formate and
acetate.
PEKASOL 2000 is free of amine,
nitrite and phosphate.
-
-60…60°C
Restricted compatibility,
especially with
respect to soft
solder and zinc individual case
must be tested
PEKASOL L
Yellowish fluid on the basis of
25…40%,
propylene glycol for use as a heat
depending on the
transfer medium with highly efficient application
anticorrosion additives and hardness
stabilizers; free from nitrite, amine
and phosphate
-50…185 °C
No known
restriction
PEKASOLar 100
PEKASOLar 50
PEKASOLar 100 and its dilutions are colorless and odorless liquids on
basis of propylene glycol with newly
developed additives
-50…150 °C
Restricted compatibility,
especially with
respect to soft
solder - individual
case must be
tested
-60…35 °C
Restricted individual case
must be tested
High-performance coolant on the
basis of potassium formate (safe with
regard to food). Available as a readyto-use mixture in 6 variants (F15 F50), cooling limits from
-15 to -60 °C. Excellent flow
properties at low temperatures, due
to low viscosity
-60…100 °C
Restricted
permissibility,
more precise
evaluations at
20...80 °C
necessary
(test soft solder in
individual case)
High-performance coolant on the
basis of potassium acetate (safe with
regard to food). Supplied as a
concentrate or ready-to-fill mixture
and suited for use at temperatures
down to -55 °C
-55…100 °C
Restricted
permissibility,
more precise
evaluations at
20...80 °C
necessary
(test soft solder in
individual case)
www.glykolundsole.com/
Permissible limit
weight fractions
New installations must be adequately
cleaned before filling. Recommended
is a 5% pro KÜHLSOLE PEX 130
solution.
Arteco NV/SA
Freezium
www.zitrec.com/Products
_Freezium.htm
Tyforop Chemie GmbH TYFOXIT®F15-F50
www.tyfo.de/index_deuts
ch.html
TYFOXIT® 1.25
Salt brine on the basis of potassium
formate, specially developed for use
in indirect cooling systems and heat
pumps. Suitable for a temperature
range from -60 to 95 °C
24 ..50%
66 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
Supplier
Product number
Basic medium
Temper Technology
Temper
Synthetic and homogenized, glycol- Ready-to-use
mixtures
free solutions on the basis of salts;
suitable for temperatures from -10 to
-50 °C; colorless to slightly yellowish;
contain no amines or nitrites, but
additives to support protection
against corrosion and to improve
lubrication
www.temper.se/Temper_
(eng)/Temper/Download
_information/Temper_DX
NI-2251_.aspx
Permissible limit
weight fractions
Temperature range
of medium
Usage
-55…180 °C
Restricted 2) check
compatibility,
especially with
respect to
fiber gasket,
PTFE (Teflon),
FPM (Viton), soft
solder unsuitable
Cast iron at
higher
temperatures
unsuitable
Non-ferrous metal
suited to a limited
extent, must be
tested in
individual case
1)
2)
Supplier’s Usage Instructions must be observed.
Restricted usage with regard to concentration or temperature
67 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Addendum
CE1P4030en
12.09.2011
Index
2-port valves
product description .............................................. 7
valve characteristics .......................................... 35
with flanged connections ................................... 11
3-port valves
product description .............................................. 7
valve characteristics .......................................... 35
with flanged connections ................................... 14
Abbreviations ........................................................ 61
Accessories
adapters ............................................................ 17
electrical ............................................................ 16
mechanical ........................................................ 17
Acting direction ..................................................... 52
Actuator overview ................................................. 15
Antifreeze.......................................................... 9, 64
Brines................................................................ 9, 64
Calculation examples
example for heat transfer oil.............................. 31
example for steam............................................. 33
example for water........................................ 29, 30
Calibration............................................................. 53
Cavitation .............................................................. 39
Circulation ............................................................. 44
Commissioning ..................................................... 51
Compatibility ..................................................... 9, 56
Converting............................................................. 54
Correction factor ................................................... 25
Coupling................................................................ 54
Dimensions ........................................................... 58
Direction of flow .................................................... 47
Disposal ................................................................ 51
Engineering notes................................................. 43
Equipment combinations ...................................... 11
Fields of use.......................................................... 10
Flanges
connection ......................................................... 48
faces .................................................................. 55
types .................................................................. 55
Flow noise............................................................. 44
Formulas ............................................................... 62
Function check...................................................... 51
Installation............................................................. 47
Kinematic viscosity
flow chart ........................................................... 22
impact on valve sizing ................................. 24, 61
Maintenance ......................................................... 51
Mechanical design................................................ 53
Medium
heat transfer oil ................................................. 42
thermal oil ......................................................... 42
water ................................................................. 40
water with antifreeze ......................................... 41
water, deionized, demineralized, super-clean... 42
Medium quality ........................................... 9, 40, 64
Medium temperature ............................................ 36
Medium treatment ................................................ 40
Mounting............................................................... 47
Mounting positions ............................................... 47
Operating pressure............................................... 36
Ordering................................................................ 16
Plug stop............................................................... 54
Product replacement ............................................ 18
2-port valves ..................................................... 18
3-port valves ..................................................... 19
Accessories....................................................... 19
Rangeability.......................................................... 25
Spare parts ........................................................... 20
Stem heating element........................................... 50
Stem sealing gland ............................................... 20
Strainer (dirt trap) ................................................. 43
Technical data....................................................... 56
Technical design ............................................. 47, 53
Temperature range ................................................. 9
Thermal insulation ................................................ 45
Tightening torques................................................ 49
Trade names ........................................................ 64
Trademarks............................................................. 5
Type plate ............................................................... 8
Type summary .................................................11, 46
Use ......................................................................... 9
Valve characteristic............................................... 52
Valve neck ............................................................ 54
Valve sizing
fluids.................................................................. 21
impact of fluid properties................................... 23
procedure .......................................................... 21
steam ................................................................ 26
Valve stem ............................................................ 54
Warranty ............................................................... 46
Water vapor table ................................................. 28
Weight .................................................................. 58
68 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Index
CE1P4030en
12.09.2011
69 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Index
CE1P4030en
12.09.2011
Siemens Switzerland Ltd.
Building Technologies Group
International Headquarters
Gubelstrasse 22
CH-6301 Zug
Phone +41 41-724 24 24
Fax +41 41-724 35 22
www.siemens.com/sbt
© 2011 Siemens Switzerland Ltd.
Subject to change
70 / 70
Siemens
Building Technologies
Valves VVF..,VXF..
Index
CE1P4030en
12.09.2011