MFP14, MFP14S and MFP14SS Automatic Pumps

MFP14, MFP14S and MFP14SS Automatic Pumps
Page 1 of 6
TI-P136-02
ST Issue 12
Cert. No. LRQ 0963008
ISO 9001
MFP14, MFP14S and MFP14SS
Automatic Pumps
Description
½" BSP or NPT steam,
compressed air or gas inlet
The Spirax Sarco MFP14 automatic pump is a displacement
receiver operated by steam or compressed air. It is generally used
to lift liquids such as condensate to a higher level. Subject to the
conditions being suitable, the pump can also be used to directly drain
closed vessels under vacuum or pressure. In conjunction with a float
steam trap the pump can be used to effectively drain temperature
controlled heat exchangers under all operating conditions.
Available types
The MFP14 is available with the following body materials:
SG iron
MFP14
Cast steel
MFP14S
Stainless steel
MFP14SS
J D*
Standards
This product fully complies with the requirements of the European
Pressure Equipment Directive 97/ 23 / EC, ATEX Directive 94 / 9 / EC
and carries the
and
marks when so required.
1" BSP /NPT exhaust
H
K
Certification
This product is available with certification to EN 10204 3.1.
Designed in accordance with AD-Merkblatter and ASME VIII Dir 1.
Note: All certification /inspection requirements must be stated at
the time of order placement.
L
G Withdrawal
distance
Sizes and pipe connections
1", 1½", 2" and 3" x 2" screwed BSP (BS 21 parallel).
MFP14
DN25, DN40, DN50 and DN80 x DN50 flanged
SG iron
EN 1092 PN16, ANSI B 16.5 Class 150 and
JIS /KS B 2238 10.
DN50 flanged EN 1092 PN16, ANSI B 16.5
MFP14S
Class 150 and JIS /KS B2238 10.
Cast steel
2" screwed BSP /NPT connections are available to
special order.
DN50 flanged EN 1092 PN16, ANSI B 16.5
MFP14SS
Class 150 JIS /KS B 2238 10.
Stainless steel 2" screwed BSP /NPT connections are available to
special order.
Integral lifting eye
15 mm diameter
C
Optional extra
Electronic pump monitors A plugged boss is provided on the
pump cover, screwed ½" BSP for connecting an electronic pump
monitor (For full details see TI-P136-24):
E
EPM1 A simple stand-alone unit with an 8 digit LCD display,
powered by an integral 1.5 V lithium battery.
EPM2 A version suitable for coupling to a remote counter /building
energy management system (BEMS).
Insulation jacket - An insulation jacket tailor made for each size
of MFP14 is available for energy savings and health and safety.
See TI-P136-07.
F
B
A
Dimensions / weights (approximate) in mm and kg
A
JIS /KS
PN
ANSI
DN25
410
DN40
440
DN50
557
625
DN80 x DN50 573
645
Size
B
C
*D
E
F
G
H
J
K
L
305
305
420
420
507.0
527.0
637.5
637.5
430
68
81
104
119
68
81
104
104
480
480
580
580
13
13
33
33
18
18
18
18
165
165
245
245
Ø 280
Ø 280
Ø 321
342
Weight
Pump Including check valves
only
and flanges
51
58
54
63
72
82
88
98
* Note: Dimension D only applies to the DN80 x DN50 pump which has an oval body. The DN25, DN40 and DN50 are round bodied
therefore dimension L is sufficient.
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2009
Page 2 of 6
Materials
No. Part
Material
MFP14
1
Cover
MFP14S
SG iron
Cast steel
MFP14SS Stainless steel
2
3
4
Cover gasket
Cover screws
Body
Synthetic fibre
Stainless steel
MFP14
SG iron
MFP14S
Cast steel
MFP14SS Stainless steel
5
6
7
8
Pillar
Connector rod
Float and lever
Eyebolt
(integral)
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
28
Stainless steel
Stainless steel
Stainless steel
MFP14
SG iron
MFP14S
Cast steel
(EN JS 1025)
EN-GJS-400-18-LT
DIN GSC 25N
ASTM A216 WCB
BS EN 10213-4
144091
ASTM A351 CF3M
ISO 3506 Gr. A2-70
(EN JS 1025)
EN-GJS-400-18-LT
DIN GSC 25N
ASTM A216 WCB
BS EN 10213-4
144091
ASTM A351 CF3M
BS 970, 431 S29
BS 1449, 304 S11
AISI 304
(EN JS 1025)
EN-GJS-400-18-LT
DIN GSC 25N
ASTM A216 WCB
BS EN 10213-4
1998 - 144091
ASTM A351 CF3M
Mechanism lever
Stainless steel
BS 3146 pt.2 ANC 2
Spring
Inconel 718 ASTM 5962 / ASTM B367
Pressure plug
Steel
DIN 267 Part III Class 5.8
Check valves
Stainless steel
Screwed boss flanges Steel
Mechanism bracket
Stainless steel BS 3146 pt. 2 ANC 4B
Bracket screws
Stainless steel
BS 6105 Gr. A2-70
Inlet valve seat
Stainless steel
BS 970, 431 S29
Inlet valve stem
Stainless steel
ASTM A276 440B
Inlet valve
Stainless steel
BS 1449 409 S19
seat gasket
Exhaust valve seat
Stainless steel
BS 970 431 S29
Exhaust valve
Stainless steel
BS 3146 pt. 2 ANC 2
Exhaust valve
Stainless steel
BS 1449 409 S19
seat gasket
EPM actuator
ALNICO
'O' ring seal
EPDM
Spring anchor
Stainless steel
BS 970 431 S29
8
3
1
23
2
28
4
10
22
5
6
7
13
11
12
MFP14SS Stainless steel
19
15
21
20
MFP14, MFP14S and MFP14SS Automatic Pumps
16
18
17
14
9
TI-P136-02 ST Issue 12
Page 3 of 6
MFP14SS
Temperature °C
MFP14S
Temperature °C
MFP14
Temperature °C
Pressure / temperature limits
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C
A
B
Steam
saturation
curve
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Pressure bar g
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AC
B
Steam
saturation
curve
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Pressure bar g
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A
Steam
saturation
curve
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Pressure bar g
The product must not be used in this region.
For use in this region contact Spirax Sarco As standard this product should not be used in this region or beyond its operating range.
A - D Flanged PN16
B - D Flanged JIS /KS 10
C - D Flanged ANSI 150
Body design conditions
PN16
MFP14 and MFP14S
Maximum motive inlet pressure (steam air or gas)
MFP14SS
MFP14
PMA
Maximum allowable pressure
MFP14S
MFP14SS
MFP14
TMA
Maximum allowable temperature
MFP14S
MFP14SS
Minimum allowable temperature. For lower temperatures consult Spirax Sarco
MFP14
Maximum operating pressure
PMO
MFP14S
for saturated steam service
MFP14SS
MFP14
Maximum operating temperature
TMO
MFP14S
for saturated steam service
MFP14SS
Minimum operating temperature. For lower temperatures consult Spirax Sarco
13.8 bar g
10.96 bar g
16 bar g @ 120°C
16 bar g @120°C
16 bar g @ 93°C
300°C @ 12.8 bar g
300°C @ 10.8 bar g
300°C @ 9.3 bar g
0°C
13.8 bar g @ 198°C
13.8 bar g @ 198°C
10.96 bar g @ 188°C
198°C @ 13.8 bar g
198°C @ 13.8 bar g
188°C @ 10.96 bar g
0°C
Total lift or backpressure (static head plus pressure in the return system) which must be below the motive fluid inlet pressure to
allow capacity to be achieved:Height (H) in metres x 0.0981 plus pressure (bar g) in return line, plus downstream piping friction pressure drop in bar calculated at a flowrate
of the lesser of six times the actual condensate rate or 30 000 litres / h.
Recommended filling head above the pump
0.3 m
Minimum filling head required
0.15 m (reduced capacity)
Standard pump operates with liquids of specific gravity:
1 down to 0.8
DN80 x 50
DN50
DN40 and DN25
Pump discharge per cycle
19.3 litres
12.8 litres
7 litres
Steam consumption
20 kg / h maximum
20 kg/h maximum
16 kg/h maximum
Air consumption (Free air)
5.6 dm3/s maximum
5.6 dm3/s maximum
4.4 dm3/s maximum
Temperature limits (Ambient
)
-10°C to 200°C
-10°C to 200°C
-10°C to 200°C
MFP14, MFP14S and MFP14SS Automatic Pumps
TI-P136-02 ST Issue 12
Page 4 of 6
Reservoir
Operating
pressure
5.2 barg
0.15 m
Filling head
Lift = 9.2 m
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P2 = 1.7 barg
Return main
pressure and
pipe length
Plant
1 500 kg/h
How to use the sizing chart
Motive pressure bar g
How to size and select
Considering the inlet pressure, backpressure and filling head
conditions, select the pump size which meets the capacity
requirements of the application.
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MFP14
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The known data
Condensate load
Steam pressure available for operating pump
Vertical lift from pump to the return piping
Pressure in the return piping (piping friction negligible)
Filling head on the pump available
1 500 kg /h
5.2 bar g
9.2 m
1.7 bar g
0.15 m
Note: It is strongly recommended that the maximum motive /
backpressure differential is between 2 - 4 bar g.
Selection example
Firstly calculate the total effective lift against which condensate
must be pumped.
Total effective lift is calculated by adding vertical lift from the
pump to return piping (9.2 m) to the pressure in the return
piping (1.7 bar g). To convert pressure in the return pipe into
pressure head, divide it by the conversion factor of 0.0981:P 2 = 1.7 bar g ÷ 0.098 1 = 17.3 m Pressure head (lift)
The total effective lift then becomes calculable :9.2 m + 17.3 m
The total effective lift is 26.5 m
Now that the total effective lift has been calculated, a pump can be
selected by plotting the known data onto the graphs on page 5.
1. Plot a horizontal line from 5.2 bar g (Motive pressure).
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Flowrate kg /h
Example
DN50 pump capacities
Capacity multiplying factors for other filling heads
Filling head
Capacity multiplying factors
metres (m)
DN25
DN40
DN50
DN80 x DN50
0.15
0.90
0.75
0.75
0.80
0.30
1.00
1.00
1.00
1.00
0.60
1.15
1.10
1.20
1.05
0.90
1.35
1.25
1.30
1.15
For motive fluids other than steam, see the table below.
Final pump selection
The size of pump selected in this case would be DN50.
This has the capability to pump:0.75 x 2 400 kg /h = 1 800 kg/h
easily coping with a condensate load of 1 500 kg/h.
2. Plot a line indicating 26.5 m lift.
3. From the point where the motive pressure line crosses
the m lift line, drop a vertical line to the X axis.
4. Read the corresponding capacity (2 400 kg /h).
Note: As the filling head is different to 0.3 m, then the capacity
calculated above must be corrected by the appropriate factor
selected from the table opposite.
Note: If the motive fluid is not steam, then the capacity above must
be multiplied by the appropriate factor in the table below.
Capacity multiplying factors for motive gas supplies (other than steam)
Pump
size
DN25
DN40
DN50
DN80 x DN50
10%
20%
30%
1.20
1.20
1.02
1.02
1.25
1.25
1.05
1.05
1.30
1.30
1.08
1.08
% Backpressure Vs Motive pressure (BP/MP)
40%
50%
60%
70%
Capacity multiplying factors
1.35
1.35
1.10
1.10
1.40
1.40
1.15
1.15
1.43
1.43
1.20
1.20
MFP14, MFP14S and MFP14SS Automatic Pumps
1.46
1.46
1.27
1.27
80%
90%
1.50
1.50
1.33
1.33
1.53
1.53
1.40
1.40
TI-P136-02 ST Issue 12
Page 5 of 6
Motive pressure bar g
Motive pressure bar g
The capacity charts are based on a filling head of 0.3 m.
The lift lines represent the net effective lift (i.e. lift plus frictional resistance).
Flowrate kg /h
Flowrate kg /h
DN40 pump capacities
DN25 pump capacities
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Motive pressure bar g
Motive pressure bar g
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Flowrate kg /h
Flowrate kg /h
DN50 pump capacities
DN80 x DN50 pump capacities
Note: If you are in any doubt about the size of the pump required or if the conditions are unusual we will be glad to advise you if you give us the
answers to the following questions:1. Nature of liquid to be pumped.
2. Temperature of liquid to be pumped.
3. Quantity to be pumped (kg /h or litres /h).
4. Initial lift horizontal distance and net effective lift (i.e. initial lift less subsequent fall in discharge line).
5. Operating medium (steam, compressed air or gas).
6. Operating pressure available.
7. The pump is generally used to drain water from a vented receiver but under certain circumstances can drain a unit from under steam
pressure or vacuum - state which.
Note: To achieve rated capacity, the pump must be installed with check valves as supplied by Spirax Sarco. Use of a substitute check valve
may affect the performance of the pump.
MFP14, MFP14S and MFP14SS Automatic Pumps
TI-P136-02 ST Issue 12
Page 6 of 6
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions (IM-P136-03) supplied with the product.
Installation note:
For best operation any flash steam must be vented or condensed ahead of the pump inlet.
How to specify
Automatic pumps shall be Spirax Sarco type MFP14 with SG iron bodies and flanged/screwed connections. They shall have stainless steel
valve and float assemblies, and a stainless steel disc check valve on the condensate inlet and outlet connections. They shall have screwed
steam/compressed air inlet and exhaust connections.
How to order
Example: 1 off Spirax Sarco DN50 MFP14 automatic pump having flanged EN 1092 PN16 connections with BSP motive fluid connections,
complete with check valves and 2" BSP screwed boss flanges.
Spare parts
The spare parts available are detailed below. No other parts are available as spares.
Available spares
Cover gasket
Float
Inlet/outlet check valve (each)
Cover and internal mechanism assembly
Valve set (inlet and exhaust valves and seats)
Spring shaft kit (two spring assemblies including anchors and two shafts plus nuts and washers for rear shaft)
2
7
12
1, 2, 7 (complete)
16, 17, 18, 19, 20, 21
10
How to order spares
Always order spares by using the description given in the column headed 'Available spares' and state the size and type of pump.
Example: 1 off Cover gasket for a Spirax Sarco DN50 MFP14 automatic pump.
19
21
20
16
18
17
1
17 (hidden)
2
10
7
12
MFP14, MFP14S and MFP14SS Automatic Pumps
TI-P136-02 ST Issue 12
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