Burkert 2012 Pneumatically operated 2/2 way globe valve CLASSIC Operating Instructions
The Burkert 2012 is a versatile globe control valve designed for precise control of liquid and gaseous media in various industrial applications. Its key features include:
-
Precise flow control: Pneumatic actuation enables accurate and responsive flow regulation.
-
Versatile media compatibility: Suitable for a wide range of media, including water, alcohol, oil, fuel, and solvents.
-
Robust construction: Durable materials like PA and PPS ensure可靠性 and longevity, even in demanding operating conditions.
-
Replaceable valve seats: Screwed-in seats allow for easy replacement, extending the valve's service life.
Mainos
Mainos
Type 2012
Globe control valve, pneumatically operated
Actuator sizes 40 mm - 125 mm, Nominal diameter DN10 - 65
Kolbengesteuertes Geradsitzventil
Antriebsgrößen 40 mm - 125 mm, Nennweiten DN10 - 65
Vanne à siège droit commandée par piston
Tailles d'actionneur 40 mm - 125 mm, Diamètre nominal DN10 - 65
Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2000 - 2021, Bürkert Werke GmbH & Co. KG
Operating Instructions 2104/23_EU-ML_00804072 / Original DE
Type 2012
1 OPERATING INSTRUCTIONS ................................................................4
1.2 Definition of the term "device" ................................................ 4
3 BASIC SAFETY INSTRUCTIONS ..........................................................5
4.1 Contact addresses ................................................................... 6
4.3 Information on the Internet ...................................................... 6
5 SYSTEM DESCRIPTION ............................................................................7
5.1 General description .................................................................. 7
6 STRUCTURE AND FUNCTION...............................................................7
7.1 Conformity ................................................................................... 9
7.2 Standards .................................................................................... 9
7.3 Type label ..................................................................................10
7.4 Operating conditions ..............................................................10
7.5 Control functions .....................................................................16
7.6 Mechanical data.......................................................................16
8.1 Safety instructions ...................................................................16
8.2 Before installation ....................................................................17
8.3 Installing valve body ................................................................17
8.4 Pneumatic connection ............................................................19
8.5 Disassembly..............................................................................20
9 MAINTENANCE, CLEANING ................................................................20
9.1 Safety instructions ...................................................................20
9.2 Maintenance work ...................................................................21
9.3 Changing the valve set ...........................................................21
11.1 Replacement part set .............................................................23
11.2 Overview of spare parts .........................................................24
12 TRANSPORTATION, STORAGE, DISPOSAL ................................24
English 3
Type 2012
Operatinginstructions
1 OPERATING INSTRUCTIONS
The operating instructions describe the entire life cycle of the device.
Keep these instructions in a location which is easily accessible to every user and make them available to every new owner of the device.
Important safety information!
Failure to observe these instructions may result in hazardous situations.
▶ The operating instructions must be read and understood.
1.1 Symbols
DANGER!
Warns of an immediate danger!
▶ Failure to observe these instructions will result in death or serious injuries.
CAUTION!
Warns of a potential danger!
▶ Failure to observe these instructions may result in moderate or minor injuries.
NOTE!
Warns of damage!
▶ Failure to observe these instructions may result in damage to the device or the system.
Indicates important additional information, tips and recommendations.
Refers to information in these operating instructions or in other documentation.
WARNING!
Warns of a potentially hazardous situation!
▶ Failure to observe these instructions may result in serious injuries or death.
▶ Designates instructions to avoid a danger.
→
Highlights a procedure which you must carry out.
1.2 Definition of the term "device"
The term "device" used in these instructions always refers to the
Type 2012 piston-operated globe valve.
In these instructions, the unit bar stands for relative pressure.
The absolute pressure is stated separately in bar (abs).
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Type 2012
Intendeduse
2 INTENDED USE
Improper use of Type 2012 may be hazardous to persons, systems in the vicinity and the environment.
▶ The device is designed to control the flow of liquid and gaseous media.
▶ In potentially explosive environments, the device must only be used in accordance with the specifications on the separate Ex-type label. The additional information and safety instructions relating to Ex areas enclosed with the device must be adhered to when deploying the device.
▶ Devices without a separate Ex-type label must not be used in potentially explosive areas. Note the permissible data, operating and usage conditions specified in the contract documentation and
operating instructions. These are described in Chapter „Technical data“.
▶ Use the device only in conjunction with third-party devices and components recommended or approved by Bürkert.
▶ Prerequisites for safe and trouble-free operation are correct transport, correct storage and installation as well as careful operation and maintenance.
▶ Use the device only as intended.
3 BASIC SAFETY
INSTRUCTIONS
These safety instructions do not take account of any:
• Contingencies or events which may occur during installation, operation and maintenance of the devices.
• Local safety regulations that are within the operator’s scope of responsibility, including those relating to the installation personnel.
High pressure danger!
▶ Before loosening lines or valves, switch off the pressure and bleed the lines.
Danger due to electric voltage.
▶ Before accessing the device or the system supply and secure it to prevent reactivation!
, switch off the power
▶ Observe the applicable accident prevention regulations and safety regulations for electrical devices.
Risk of injury when opening the actuator.
The actuator contains a spring under tension. The spring that ejects when the actuator opens may cause injuries.
▶ Do not open the actuator.
Risk of injury due to moving parts in the device.
▶ Do not reach into openings.
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6
Risk of burns.
The device surface can become hot during continuous operation.
▶ Do not touch the device with your bare hands.
General hazardous situations.
To prevent injuries, ensure that:
▶ The system cannot be activated unintentionally.
▶ Installation and maintenance may be performed by authorised technicians only and with the appropriate tools.
▶ The process must be restarted in a defined or controlled manner after an interruption in the power supply or pneumatic supply.
▶ Device may be operated only when in perfect condition and in consideration of the operating instructions.
▶ The general rules of technology must be followed for application planning and operation of the device.
Please observe the following in order to protect against damage to the device:
▶
Feed only those media listed in chapter „7 Technical data“ into
the medium ports.
▶ Do not place the valve under mechanical stress (e.g. by placing objects on it or standing on it).
▶ Do not make any external modifications to the valves.
▶ Do not paint housing parts or screws.
Type 2012
Generalnotes
4 GENERAL NOTES
4.1 Contact addresses
Germany
Bürkert Fluid Control Systems
Sales Centre
Christian-Bürkert-Str. 13–17
D-74653 Ingelfingen
Tel. +49 (0) 7940 - 10 91 111
Fax +49 (0) 7940 - 10 91 448
E-mail: [email protected]
International
The contact addresses can be found on the back pages of the printed operating instructions.
They are also available online at: www.burkert.com
4.2 Warranty
A precondition for the warranty is that the Type 2012 globe valve is used as intended in consideration of the specified operating conditions.
4.3 Information on the Internet
Operating instructions and data sheets for Type 2012 can be found online at: country.burkert.com
English
Type 2012
Systemdescription
5 SYSTEM DESCRIPTION
5.1 General description
The 2/2-way globe valve Type 2012 is suitable for liquid and gaseous media. Using neutral gases or air (control media), it controls the flow of water, alcohol, oil, fuel, hydraulic fluid, saline solution, lye, organic solvents and vapour (flow media).
One special characteristic of the globe valves are screwed-in seats, which can be replaced when needed.
6 STRUCTURE AND FUNCTION
6.1 Structure
The globe valve consists of a pneumatically actuated piston actuator and a 2-way globe valve body.
The actuator is made from PA, or PPS for special operating conditions.
The self-adjusting packing gland guarantees a high degree of tightness.
The stainless steel valve body facilitates high flow values.
Transparent cap with position indicator
Actuator cover
Pilot air ports
Actuator housing
5.1.1 Restrictions
WARNING!
Risk of injury from pressure surge!
A pressure surge could cause lines and the device to burst. Because of the risk of pressure surge, valves with the flow direction above the seat must not be used for fluid media .
▶ Observe the type of flow and type of medium for operating the device.
Actuator/body interface with wrench flat Globe body
Port connection
Fig. 1: Type 2012 globe valve, structure and description
English 7
Type 2012
Structureandfunction
6.2 Function
Depending on the variant, the valve seat is closed in the direction of or against the medium flow.
Spring force (CFA) or pneumatic pilot pressure (CFB and CFI) generate the closing force on the swivel plate. A spindle connected to the actuator piston transmits the force.
6.2.1 Control functions (CF)
WARNING!
For control function I – risk of pilot pressure failure.
With control function I, the control unit and reset are pneumatic. No defined position is reached during a pressure failure.
▶ To ensure a controlled restart of the device, first apply pilot pressure and then activate the medium.
A
A
(CFA)
Closed by spring force in rest position
P
B
B
(CFB)
Opened by spring force in rest position
P
A
I (CFI)
Actuating function via reciprocal pressurisation
P
6.2.2 Flow direction below seat
Depending on the variant, the valve is closed against the medium flow either with spring force (control function A, CFA) or pilot pressure
(control function B or I, CFB or CFI).
Because the medium pressure is below the swivel plate, it helps open the valve.
WARNING!
Valve leak if there is too little minimum pilot pressure or high medium pressure.
Minimum pilot pressure for CFB and CFI that is too low, or failing to meet the permitted medium pressure, can cause a leak in the valve seat.
▶ Adhere to minimum pilot pressure.
▶ Do not exceed the medium pressure.
▶
See chapter „7.4.2 Pressure ranges“.
CFA SFB/SFI
1 2
Marking on the housing
Flow direction
Fig. 2: Flow direction below seat (closing against medium)
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Type 2012
Technicaldata
6.2.3 Flow direction above the seat
The valve is closed with the medium flow via spring force (control function A, CFA). Because the medium pressure is above the swivel plate, it helps the valve close and also contributes to sealing the valve seat.
The valve opens via pilot pressure.
WARNING!
Risk of injury from pressure surge.
A pressure surge could cause lines and the device to burst. Because of the risk of pressure surge, valves with the flow direction above the seat must not be used for fluid media .
▶ Observe the type of flow and type of medium for operating the device.
In order to ensure complete opening, the minimum pilot pressure must be applied!
7 TECHNICAL DATA
7.1 Conformity
The Type 2012 globe valve conforms to the EU Directives as per the
EU Declaration of Conformity.
7.2 Standards
The applied standards as used to verify compliance with the EU Directives can be found in the EC type examination certificate and/or the
EC Declaration of Conformity.
According to Pressure Equipment Directive observe the following operating conditions:
DN
DN65
Maximum pressure for compressible fluids of Group 1 (dangerous gases and vapours according to Art. 3, No. 1.3, letter a, first dash)
15 bar
Marking on the housing
Flow direction
1 2
Fig. 3: Flow direction above the seat (closing with the medium)
English 9
7.3 Type label
Flow coefficient
For derating, please refer to the operating instructions.
Seal material
2012 A PTFE Kv31
PS 10bar
2012 A PTFE Kv31
PS 10bar
Tmed -10 - +180 °C see manual for derating
00266857
W17AL
Flow 1 2
Order number
Flow direction
Manufacture code (coded) see manual for derating
00266857
Fig. 4: Type label description (example) see manual for derating
00266857
W17AL
Flow 1 2
W17AL
Flow 1 2
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Type 2012
Technicaldata
7.4 Operating conditions
7.4.1 Temperature ranges
Actuator size [mm]
40–63
80–125
40–80
100–125
Actuator material
PA
PA
PPS
PPS
Temperature range
Medium (for PTFE and PEEK seal)
Environment 1)
–10 – see „Fig. 5“ –10 –see „Fig. 5“
–10 – +180 °C
–10 – +230 °C
–10 – +230 °C
–10 – +60 °C
+5 – +140 °C
+5 – +90 °C short-term up to max. +140 °C
Tab. 1: Temperature ranges
1)
When using a pilot valve the max. ambient temperature is
+55 °C.
Ambient temperature
[°C]
70
60
50
∅
50
∅
63
40
∅
40
30
20
100 120 140 160 180 200
Medium temperature [°C]
Fig. 5: Temperature range of maximum medium and ambient temperature for PA actuators
Type 2012
Technicaldata
7.4.2 Pressure ranges
Actuator material
Actuator size [mm]
PA
40–100
125
PPS
40–80
100–125
Tab. 2: Maximum pilot pressure
Max. Pilot pressure
[bar]
10
7
10
7
Medium pressure and pilot pressure for control function A, flow direction below seat (standard):
DN
Maximum medium pressure/minimum pilot pressure
40 50
Actuator size ø [mm]
63 80 100 125
10/15 15/4.0 16/4.1
25/4.5
20 6.5/4.0 11/4.1
16/4.5
25/5.0
25
32
40
5.2/4.1 11/4.5
25/5.0
6/4.5
4/4.5
14/5.0
9/5.0
16/4.4
25/3.2
12.5/4.4
25/4.1
50 2.5/4.5 6/5.0
7.2/4.4
65
Tab. 3: Medium and pilot pressure CFA, standard
24/5.7
12/5.6
Derating pressure and temperature ranges
Usage limits of the valve (derating medium pressure)
Temperature
–10 – +50 °C
100 °C
150 °C
Medium pressure
25 bar
24.5 bar
22.4 bar
200 °C 20.3 bar
230 °C 19 bar
Tab. 4: Derating the medium pressure as per DIN EN 12516-1/
PN25
Temperature
–29 – +38 °C
50 °C
Medium pressure
19 bar
18.4 bar
100 °C
150 °C
200 °C
16.2 bar
14.8 bar
13.7 bar
230 °C 12.7 bar
Tab. 5: Derating the medium pressure as per ASME B16.5/
ASME B16.34 Cl.150
English 11
Temperature
–10 – +50 °C
100 °C
150 °C
Medium pressure
14 bar
14 bar
13.4 bar
200 °C 12.4 bar
230 °C 11.7 bar
Tab. 6: Derating the medium pressure as per JIS B 2220 10K
Usage limits of medium and ambient temperature
140
130
120
110
100
90
80
70
60
50
0 20 40 60 80 100 120 140 160 180 200 220
Medium temperature [ °C ]
Fig. 6: Derating CLASSIC ANTG40
Type 2012
Technicaldata
140
130
120
110
100
90
80
70
60
50
0 20 40 60 80 100 120 140 160 180 200 220
Medium temperature [ °C ]
Fig. 7: Derating CLASSIC ANTG50, 63, 80
110
100
90
80
70
60
50
0 20 40 60 80 100 120 140 160 180 200 220
Medium temperature [ °C ]
Fig. 8: Derating CLASSIC ANTG 100, 125
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Type 2012
Technicaldata
Required minimum pilot pressure depending on the medium pressure
In the following graphs the required minimum control pressure is shown for control functions A, B and I depending on the medium pressure.
Control function A, flow direction above the seat
Pilot pressure [bar]
Fig. 10: Pressure diagram, actuator ø 50 mm, control function A, flow direction above the seat
Pilot pressure [bar]
Fig. 9: Pressure diagram, actuator ø 40 mm, control function A, flow direction above the seat
Pilot pressure [bar]
Fig. 11: Pressure diagram, actuator ø 63 mm, control function A, flow direction above the seat
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Type 2012
Technicaldata
Pilot pressure [bar]
Fig. 12: Pressure diagram, actuator ø 80 mm, control function A, flow direction above the seat
*
Pilot pressure [bar]
Fig. 14: Pressure diagram, actuator ø 125 mm, control function A, flow direction above the seat
* Medium pressure max. 15 bar according to Pressure Equipment Directive
2014/68/EU for compressible fluids of Group 1 (dangerous gases and vapours according to Art. 4, paragraph (1) c) i) first dash).
Pilot pressure [bar]
Fig. 13: Pressure diagram, actuator ø 100 mm, control function A, flow direction above the seat
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Type 2012
Technicaldata
Control function B and I, flow direction below seat
ø 63
SFB/SFI
3LORWSUHVVXUH>EDU@
Fig. 15: Pressure diagram, actuator ø 63 mm, control function B and I, flow direction below seat
ø 80
SFB/SFI
3LORWSUHVVXUH>EDU@
Fig. 16: Pressure diagram, actuator ø 80 mm, control function B and I, flow direction below seat
ø 100
SFB/SFI
3LORWSUHVVXUH>EDU@
Fig. 17: Pressure diagram, actuator ø 100 mm, control function B and I, flow direction below seat
ø 125
SFB/SFI
DN80
DN100
3LORWSUHVVXUH>EDU@
Fig. 18: Pressure diagram, actuator ø 125 mm, control function B and I, flow direction below seat
English 15
7.4.3 Media
Control media Neutral gases, air
Flow media Water, alcohols, oils, fuels, saline solutions, lyes, organic solvents, vapour
7.5 Control functions
Control function A Closed by spring force in rest position
Control function B Opened by spring force in rest position
Control function I Actuating function via reciprocal pressurisation
7.6 Mechanical data
Materials
Valve body Stainless steel 316L
Actuator PA, PPS
Seal materials PTFE
(NBR, FKM, EPDM and PEEK on request)
Packing gland PTFE (carbon-filled)
Type 2012
Installation
8 INSTALLATION
8.1 Safety instructions
DANGER!
Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and vent the lines.
WARNING!
Risk of injury due to improper installation.
▶ Installation may be carried out by authorised technicians only and with the appropriate tools!
Risk of injury due to unintentional activation of the system and uncontrolled restart.
▶ Secure the system against unintentional activation.
▶ Following installation, ensure a controlled restart.
For control function I – risk of pilot pressure failure.
With control function I, the control unit and reset are pneumatic. No defined position is reached during a pressure failure.
▶ To ensure a controlled restart of the device, first apply pilot pressure and then activate the medium.
Risk of injury due to moving parts in the device.
▶ Do not reach into openings.
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Type 2012
Installation
8.2 Before installation
Installation position: any, preferably actuator on top.
→
Ensure that pipelines are aligned before connecting the valve.
→
Note flow direction.
8.2.1 Preparatory work
→
Clear impurities from pipelines (sealants, metal chips, etc.).
Devices with welded connection
Remove the actuator from the valve body:
→
Clamp valve body into a holding device.
NOTE!
Damage to the seat seal or seat contour!
▶ When removing the actuator, the valve must be in the open position.
→
For control function A:
Pressurise pilot air port with compressed air (6 bar): Valve opens.
→
Place a suitable open-end wrench on the wrench flat of the nipple.
→
Unscrew actuator from the valve body.
8.3 Installing valve body
WARNING!
Risk of injury due to improper operation.
Failure to observe the tightening torque value is dangerous due to the risk of damage to the device.
▶ Use an open-end wrench for installation, never a pipe wrench.
▶
Observe tightening torque (see „Tab. 7: Tightening torques valve body/nipple“).
Dirt trap for devices with approval according to DIN EN 161
According to DIN EN 161 "Automatic shut-off valves for gas burners and gas appliances", a dirt trap, which prevents the penetration of a
1 mm test pin, must be installed upstream of the valve.
→
If the approval also applies to the stainless steel valve body, such a dirt trap must be attached in front of the globe valve.
8.3.1 Installing the body
Welded connection
→
Weld or bond valve body in pipeline system.
Other bodies
→
Connect valve body to pipeline.
English 17
8.3.2 Install actuator (welded connection)
Seal
Fig. 19: Seal
→
Check seal and replace if required.
WARNING!
Risk due to incorrect lubricants.
Unsuitable lubricant may contaminate the medium. There is a risk of explosion in oxygen applications.
▶ Only used accordingly approved lubricants for specific applications.
→
Before re-installation, grease nipple thread of the actuator (e.g. using Klüberpaste UH1 96-402 from Klüber).
NOTE!
Damage to the seat seal or seat contour!
▶ When installing the actuator, the valve must be in the open position.
→
For control function A:
Apply compressed air to the lower pilot air port (6 bar) so that the swivel plate lifts up from the valve seat and is not damaged during the screw-in process.
18 English
Type 2012
Installation
→
Screw actuator into the valve body.
Tightening torques valve body/nipple
DN
15
20
25
Tightening torques [Nm]
45 ± 3
50 ± 3
60 ± 3
32
40
50
65 ± 3
65 ± 3
70 ± 3
65 70 ± 3
Tab. 7: Tightening torques valve body/nipple
8.3.3 Turning actuator
The position of the ports can be seamlessly aligned by turning the actuator 360°.
NOTE!
Damage to the seat seal or seat contour.
▶ When turning the actuator, the valve must be in the open position.
→
Clamp valve body in a holding device (only for valves which have not yet been installed).
Type 2012
Installation
→
For control function A pressurise the pilot air port with compressed air (6 bar): Valve opens.
→
Counter with a suitable open-end wrench on the wrench flat of the nipple.
→
Place a suitable open-end wrench on the hexagon head of the actuator.
WARNING!
Risk of injury from discharge of pressure and escaping medium.
The body connection can loosen when rotated incorrectly.
▶ Only turn the actuator
in the specified direction
→
Move the actuator into the required position by turning it clockwise
(seen from above).
Fig. 20: Rotating with open-end wrench
Open-end wrench
8.4 Pneumatic connection
DANGER!
Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and vent the lines.
WARNING!
Risk of injury due to unsuitable connection hoses.
Hoses that cannot withstand the pressure and temperature range can cause hazardous situations.
▶ Only use hoses that are permitted for the specified pressure and temperature range.
▶ Note the data sheet information from the hose manufacturers.
For control function I – risk of pilot pressure failure.
With control function I, the control unit and reset are pneumatic. No defined position is reached during a pressure failure.
▶ To ensure a controlled restart of the device, first apply pilot pressure and then activate the medium.
If the position of the pilot air ports is unfavourable for installing the hoses, these can be seamlessly aligned by rotating the actuator by 360°.
Control function A
→
Connect control medium to bottom pilot air port of the actuator.
Control function B
English 19
→
Connect control medium to top pilot air port of the actuator.
Control function I
→
Connect control medium to top and bottom pilot air port of the actuator.
For usage in an aggressive environment, we recommend using a pneumatic hose to drain all free pneumatic ports in a neutral atmosphere.
Pilot air hose
Pilot air hoses of sizes 6/4 mm or ¼" can be used.
8.5 Disassembly
DANGER!
Risk of injury from discharge of pressure and escaping medium.
Dismantling a device which is under pressure is hazardous due to a sudden discharge of pressure or escaping medium.
▶ Before disassembly, shut off the pressure and vent all lines.
→
Disconnect the pneumatic connection.
→
Disassemble the device.
Type 2012
Maintenance,cleaning
9 MAINTENANCE, CLEANING
9.1 Safety instructions
DANGER!
Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and vent the lines.
Risk of injury due to electric shock.
▶ Before reaching into the system, switch off the power supply and secure against reactivation!
▶ Observe the applicable accident prevention and safety regulations for electrical devices!
WARNING!
Risk of injury due to improper maintenance work.
▶ Maintenance may be carried out by authorised technicians only.
▶ Use an open-end wrench, never a pipe wrench, to screw the valve body or actuator in or out, and observe the tightening torque.
Risk of injury due to unintentional activation of the system and uncontrolled restart.
▶ Secure the system against unintentional activation.
▶ Following maintenance, ensure a controlled restart.
20 English
Type 2012
Maintenance,cleaning
WARNING!
For control function I – risk of pilot pressure failure.
With control function I, the control unit and reset are pneumatic. No defined position is reached during a pressure failure.
▶ To ensure a controlled restart of the device, first apply pilot pressure and then activate the medium.
Risk of injury due to moving parts in the device.
▶ Do not reach into openings.
9.2 Maintenance work
Actuator:
When used in accordance with these operating instructions, the actuator of the globe valve is maintenance-free.
Wearing parts of the globe valve:
Parts which are subject to natural wear are:
• Valve seat,
• Seals.
→
If there is a leak, replace the respective wearing part with a corresponding spare part.
Visual inspection:
According to the usage conditions, perform regular visual inspections:
→
Check medium ports for tightness.
→
Check relief bore on the pipe for leaks.
Relief bore
Fig. 21: Relief bore
9.2.1 Cleaning
Commercially available cleaning agents can be used to clean the outside.
NOTE!
Avoid causing damage with cleaning agents.
▶ Before cleaning, check that the cleaning agents are compatible with body materials and seals.
9.3 Changing the valve set
Removing actuator from the valve body
→
Clamp valve body into a holding device.
NOTE!
Damage to the seat seal or seat contour.
▶ When removing the actuator, the valve must be in the open position.
English 21
→
For control function A: Pressurise pilot air port with compressed air (6 bar): Valve opens.
→
Place a suitable open-end wrench on the wrench flat of the nipple.
→
Unscrew actuator from the valve body.
Replacing valve seat
→
Unscrew the old valve seat with the assembly tool and a wrench.
→
Clean the thread and seal surface in the body with compressed air.
→
Select tool insert and screw it into the assembly tool.
Assembly tool
Tool attachment
(depending on seat diameter)
Valve seat
Type 2012
Maintenance,cleaning
→
Attach a new valve seat to the seat assembly tool.
→
Lubricate the thread (e.g. Klüberpaste UH1 96-402).
→
Manually screw the attached valve seat into the body thread.
→
Tighten to the specified tightening torque with a torque wrench
Tightening torque values for seat assembly
Valve seat
Fitting
Housing
DN 4–15 DN 15
DN 20
DN 25
DN 32
DN 20
DN 25
DN 32
Tightening torques
Uncoated valve seats
25
Coated valve seats
20
35
50
80
28
40
65
DN 40
DN 50
DN 65
DN 40
DN 50
DN 65
100
120
150
85
120
150
DN 80 DN 80 180 180
DN 100 DN 100 220 220
Tab. 8: Tightening torque values for seat assembly
Tolerance
+8
+8
+10
+10
+10
+3
+3
+5
+5
Fig. 22: Replacing the valve seat
22 English
Type 2012
Faults
10 FAULTS
Fault
Actuator does not switch
Cause
Pilot air port interchanged
Valve is not tight
Pilot pressure too low
Medium pressure too high
Flow direction interchanged
Dirt between seal and valve seat
Valve seat seal worn
Flow direction interchanged
Medium pressure too high
Pilot pressure too low
Valve is leaking on the relief bore
Tab. 9: Faults
Packing gland worn
Elimination
→
Connect lower (CFA,
CFI) or upper (CFB,
CFI) pilot air port
→
Observe pressure specifications on the type label
→
Observe direction of arrow on the type label
→
Install dirt trap
→
Replace valve seat seal
→
Observe direction of arrow on the type label
→
Observe pressure specifications on the type label
→
Replace packing gland or actuator
11 SPARE PARTS
CAUTION!
Risk of injury and/or damage due to incorrect parts!
Incorrect accessories and unsuitable spare parts may cause injuries and damage the device and the area around it.
▶ Use only original accessories and original spare parts from
Bürkert.
11.1 Replacement part set
The following replacement part sets are available for the globe valve
Type 2012:
• Seal set,
• Valve set,
• Valve set (valve unit + seat).
The order numbers of the spare parts and the installation instructions are available in the operating instructions for spare parts on our homepage: www.country.burkert.com
→ Type 2012.
English 23
11.2 Overview of spare parts
Seal set 1
Valve trim
(valve unit + seat)
3
2 Valve set
Type 2012
Transportation,storage,disposal
12 TRANSPORTATION, STORAGE,
DISPOSAL
NOTE!
Transport damage!
Inadequately protected devices may be damaged during transport.
• Protect the device against moisture and dirt in shock-resistant packaging during transport.
• Avoid exceeding or dropping below the permitted storage temperature.
Incorrect storage may damage the device.
• Store the device in a dry and dust-free location!
• Storage temperature –20 – +65 °C.
Damage to the environment caused by device parts contaminated with media.
• Dispose of the device and packaging in an environmentally friendly manner!
• Observe applicable disposal and environmental regulations.
Note:
Observe national waste disposal regulations.
Fig. 23: Overview of spare parts
24 English
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