Type2012

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 - 2022, Bürkert Werke GmbH & Co. KG
Operating Instructions 2211/25_EU-ML_00804072 / Original DE

Type 2012
Contents﻿
8

INSTALLATION............................................................................................. 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

GENERAL NOTES.........................................................................................6
4.1 Contact addresses.................................................................... 6
4.2 Warranty....................................................................................... 6
4.3 Information on the Internet....................................................... 6

9

MAINTENANCE, CLEANING................................................................. 20
9.1 Safety instructions....................................................................20
9.2 Maintenance work....................................................................21
9.3 Changing the valve set............................................................21

SYSTEM DESCRIPTION.............................................................................7
5.1 General description................................................................... 7

10 FAULTS............................................................................................................ 23

1

OPERATING INSTRUCTIONS.................................................................4
1.1 Symbols........................................................................................ 4
1.2 Definition of the term "device"................................................. 4

2

INTENDED USE..............................................................................................5

3

BASIC SAFETY INSTRUCTIONS...........................................................5

4

5
6

7

STRUCTURE AND FUNCTION...............................................................7
6.1 Structure....................................................................................... 7
6.2 Function........................................................................................ 8

11 SPARE PARTS............................................................................................. 23
11.1 Replacement part set..............................................................23
11.2 Overview of spare parts..........................................................24
12 TRANSPORTATION, STORAGE, DISPOSAL................................. 24

TECHNICAL DATA.........................................................................................9
7.1 Standards and directives.......................................................... 9
7.2 Type label...................................................................................10
7.3 Conversion of actuator sizes.................................................10
7.4 Operating conditions...............................................................10
7.5 Control functions......................................................................16
7.6 Mechanical data.......................................................................16

English3

Type 2012
Operating instructions

1

OPERATING INSTRUCTIONS

The operating instructions describe the entire life cycle of the device.
Keep these instructions in a location which is easily accessible toevery user and make them available to every new owner of the device.

CAUTION!
Warns of a potential danger!
▶ Failure to observe these instructions may result in moderate orminor injuries.

Important safety information!
Failure to observe these instructions may result in hazardous
situations.
▶ The operating instructions must be read and understood.

1.1

Symbols

NOTE!
Warns of damage!
▶ Failure to observe these instructions may result in damage tothe device or the system.
Indicates important additional information, tips andrecommendations.

DANGER!
Warns of an immediate danger!
▶ Failure to observe these instructions will result in death or serious injuries.

Refers to information in these operating instructions or inother documentation.
▶ Designates instructions to avoid a danger.

WARNING!
Warns of a potentially hazardous situation!
▶ Failure to observe these instructions may result in serious injuries or death.

→ 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 theType 2012 piston-operated globe valve.
In these instructions, the unit bar stands for relative pressure.
The absolute pressure is stated separately in bar (abs).

4

EnglishType 2012
Intended use

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 usedin accordance with the specifications on the separate Ex-typelabel. 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 andoperating instructions. These are described in Chapter „Technicaldata“.
▶ Use the device only in conjunction with third-party devices andcomponents recommended or approved by Bürkert.
▶ Prerequisites for safe and trouble-free operation are correct transport, correct storage and installation as well as careful operationand 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 andbleed the lines.
Danger due to electric voltage.
▶ Before accessing the device or the system , switch off the power
supply and secure it to prevent reactivation!
▶ 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.

English5

Type 2012
General notes
Risk of burns.

4

GENERAL NOTES

The device surface can become hot during continuous operation.
▶ Do not touch the device with your bare hands.

4.1

Contact addresses

Germany

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 inconsideration 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.

Bürkert Fluid Control Systems
Sales Centre
Christian-Bürkert-Str. 13–17
D-74653 IngelfingenTel. +49 (0) 7940 - 10 91 111
Fax +49 (0) 7940 - 10 91 448
E-mail: info@burkert.com
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 isused 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 foundonline at: country.burkert.com

6

EnglishType 2012
System description

5

SYSTEM DESCRIPTION

6STRUCTURE AND FUNCTION

5.1

General description

6.1

Structure

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 flowof 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.

5.1.1

The globe valve consists of a pneumatically actuated piston actuatorand 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 withposition indicator

Restrictions
WARNING!

Pilot air ports

Actuator cover
Actuator housing

Risk of injury from pressure surge!
A pressure surge could cause lines and the device to burst. Becauseof 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 thedevice.

Actuator/bodyinterface with wrench
flat

Globe body

Port connection
Fig. 1:

Type 2012 globe valve, structure and description

English7

Type 2012
Structure and function

6.2

Function

6.2.2

Depending on the variant, the valve seat is closed in the direction ofor 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 theactuator piston transmits the force.

6.2.1

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!

Control functions (CF)Valve leak if there is too little minimum pilot pressure or highmedium pressure.

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)

Flow direction below seat

P

Closed by spring force in rest
position

Minimum pilot pressure for CFB and CFI that is too low, or failingto meet the permitted medium pressure, can cause a leak in thevalve seat.
▶ Adhere to minimum pilot pressure.
▶ Do not exceed the medium pressure.
▶ See chapter „7.4.2 Pressure ranges“.
CFA

SFB/SFI

B

B
(CFB)

P

Opened by spring force in rest
positionA

I (CFI)P8

1 2

Actuating function via reciprocalpressurisation
Fig. 2:EnglishMarking on the
housing
Flow direction

Flow direction below seat (closing against medium)

Type 2012
Technical data

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 thevalve 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. Becauseof 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 thedevice.
In order to ensure complete opening, the minimum pilotpressure must be applied!

Marking on the
housing
Flow direction

Fig. 3:

7

TECHNICAL DATA

7.1

Standards and directives

The appliance complies with the relevant EU harmonisation regulations. In
addition, the device also fulfils the requirements of the laws of the United
Kingdom.
On the respective current version of the EU Declaration of Conformity / UK
Declaration of Conformity you will find the harmonised standards whichwere applied in the conformity assessment procedure.
According to Pressure Equipment Directive observe the following
operating conditions:
DN

Maximum pressure for compressible fluidsof Group 1 (dangerous gases and vapours
according to Art. 3, No. 1.3, letter a, first
dash)

DN65

15 bar1 2

Flow direction above the seat (closing with the medium)

English9

Type 2012
Technical data

Type label

Made in Germany

For derating, pleaserefer to the operating instructions.

Fig. 4:

Flow coefficient
Seal material

Operating conditions

7.4.1

Temperature ranges

Actuator Actuator
size [mm] material

Conversion of actuator sizes

Tab. 2:Temperature range
Medium (for PTFE
and PEEK seal)

Environment 1)

40...63

PA–10 ... see „Fig. 5“–10 ... see „Fig. 5“80...125

PA–10...+180 °C–10...+60 °C

40...80

PPS–10...+230 °C+5...+140 °C

100...125

PPS–10...+230 °C+5...+90 °C
short-term up to
max. +140 °C

Type label description (example)

7.3

Actuator size[mm]
40

DesignationC

Outer diameter
A [mm]
53

50

D

64

63

E

80

Scale drawing

Temperature ranges
1) hen using a pilot valve the max. ambient temperature isW+55 °C.

Ambient temperature
[°C]

70
60

80

F

101

40

G

127

30

125

H

157
Fig. 5:English

50

∅4

∅6

3 (E

(D

)

)

0 (C

)

Mediumtemperature [°C]
Temperature range of maximum medium and ambient temperature
for PA actuators
20
100

Conversion of actuator sizes

∅

50

100
Tab. 1:10

7.4

2012 A PTFE Kv31
PS 10barfunction
TmedControl-10 - +180
°C2012 A PTFE Kv31
Type
seemanualforderating
PS 10bar
Tmed -10 - +180 °C
00266857
see manual for derating
Mediumpressure
W17AL
2012
A PTFE
Kv31
00266857
Flow
1
2
PS
10bar
W17AL
Tmed -10 - +180 °C
Flow 1 2
see manual for derating
Order number
00266857
Medium temperature
Flow direction
Manufacture code (coded)W17AL
Flow 1 2
Made in Germany
Made in Germany

7.2

120

140

160

180

200

Type 2012
Technical data

7.4.2

Pressure ranges

Actuatormaterial

Actuator size [mm]Max. Pilot pressure[bar]

40...80

PA
PPS
Tab. 3:

Derating pressure and temperature ranges
Temperature

Medium pressure

10–10...+50 °C

25 bar100...125

7

100 °C

24.5 bar

40...8010

150 °C

22.4 bar

100...125

7

200 °C

20.3 bar

Maximum pilot pressure

Medium pressure and pilot pressure for control function A, flow
direction below seat (standard):
Maximum medium pressure/minimum pilot pressure
DN

Actuator size ø [mm]
40

50

63

10/15 15/4.0

16/4.1

25/4.520

6.5/4.0 11/4.1

16/4.525/5.025

5.2/4.1

11/4.525/5.032

6/4.5

14/5.016/4.425/3.2

40

4/4.5

9/5.0

12.5/4.4

25/4.150

2.5/4.5

6/5.0

7.2/4.4

24/5.780

100

65
Tab. 4:

Usage limits of the valve (derating medium pressure)125

230 °C

19 barTab. 5:

Derating the medium pressure as per DIN EN 12516-1/
PN25

Temperature

Medium pressure–29 – +38 °C

19 bar

50 °C

18.4 bar

100 °C

16.2 bar

150 °C14.8 bar

200 °C

13.7 bar

230 °C
Tab. 6:12.7 bar
Derating the medium pressure as per ASME B16.5/
ASME B16.34 Cl.150

12/5.6
Medium and pilot pressure CFA, standard

English11

Type 2012
Technical data
Medium pressure

140–10...+50 °C

14 bar130

100 °C

14 bar

150 °C

13.4 bar

200 °C12.4 bar

230 °C11.7 bar

Tab. 7:

Derating the medium pressure as per JIS B 2220 10K

Usage limits of medium and ambient temperature

Ambient temperature [°C]

Temperature

110
100
90
80
70
60
50

40 60

Derating CLASSIC actuator size 50, 63, 80

Fig. 7:

100
90
80
70
60
50

80 100 120 140 160 180 200 220

Medium temperature [°C]110Fig. 6:0		 20 40

60 80 100 120 140 160 180 200 220
Medium temperature [°C]

110
100

Derating CLASSIC actuator size 40

90
80
70
60
50

0		 2040

60

80 100 120 140 160 180 200 220

Medium temperature [°C]Fig. 8:12

0		 20130
120

Ambient temperature [°C]

Ambient temperature [°C]

140

120

EnglishDerating CLASSIC actuator size 100, 125

Type 2012
Technical data
Required minimum pilot pressure depending on the medium
pressure
Medium pressure [bar]In the following graphs the required minimum control pressure isshown for control functions A, B and I depending on the medium
pressure.

Medium pressure [bar]Control function A, flow direction above the seat

Pilot pressure [bar]Pressure diagram, actuator size 50, control function A, flow
direction above the seat

Medium pressure [bar]Fig. 10:

Pilot pressure [bar]Fig. 9:Pressure diagram, actuator size 40, control function A, flow
direction above the seat

Pilot pressure [bar]Fig. 11:

Pressure diagram, actuator size 63, control function A, flow
direction above the seat

English13

Type 2012

Medium pressure [bar]Medium pressure [bar]Technical data

Pilot pressure [bar]Pilot pressure [bar]Pressure diagram, actuator size 80, control function A, flow
direction above the seat

Pilot pressure [bar]Fig. 13:

14

Fig. 14:

Pressure diagram, actuator size 125, 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 andvapours according to Art. 4, paragraph (1) c) i) first dash).

*Medium pressure [bar]Fig. 12:Pressure diagram, actuator size 100, control function A, flow
direction above the seat

EnglishType 2012
Technical data











3LORWSUHVVXUH>EDU@











DN50

Pressure diagram, actuator size 63, control function B and I, flow
direction below seat

DN65



















3LORWSUHVVXUH>EDU@









Pressure diagram, actuator size 80, control function B and I, flow
direction below seatFig. 18:

DN50

DN40

DN32



















3LORWSUHVVXUH>EDU@









Pressure diagram, actuator size 100, control function B and I, flow
direction below seat

ø 125
SFB/SFI

Fig. 17:



DN65





DN50



0HGLXPSUHVVXUH>EDU@





DN40



ø 100
SFB/SFI

0HGLXPSUHVVXUH>EDU@

DN40
DN50



DN40

0HGLXPSUHVVXUH>EDU@

DN32



ø 80
SFB/SFI

Fig. 16:

DN25



DN32

Fig. 15:DN25

0HGLXPSUHVVXUH>EDU@ø 63
SFB/SFI

DN20

DN15

Control function B and I, flow direction below seat





DN80



DN100


















3LORWSUHVVXUH>EDU@









Pressure diagram, actuator size 125, control function B and I, flow
direction below seat

English15

Type 2012
Installation

8

INSTALLATION

Flow media			Water, alcohols, oils, fuels, saline solutions,lyes, organic solvents, vapour

8.1

Safety instructions

7.5

Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and ventthe lines.

7.4.3

Media

Control media			

Neutral gases, airControl 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 reciprocalpressurisation

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)

DANGER!

WARNING!
Risk of injury due to improper installation.
▶ Installation may be carried out by authorised technicians only andwith 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.

16

EnglishType 2012
Installation

8.2

Before installation

8.3

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.).

Installing valve body
WARNING!

Risk of injury due to improper operation.
Failure to observe the tightening torque value is dangerous due tothe risk of damage to the device.
▶ Use an open-end wrench for installation, never a pipe wrench.
▶ Observe tightening torque (see „Tab. 8: Tightening torques
valve body/nipple“).

Devices with welded connection
Remove the actuator from the valve body:

Dirt trap for devices with approval according to DIN EN 161

NOTE!

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.

→ Clamp valve body into a holding device.
Damage to the seat seal or seat contour!
▶ When removing the actuator, the valve must be in the open
position.

→ If the approval also applies to the stainless steel valve body, such

→ For control function A:

8.3.1

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.

a dirt trap must be attached in front of the globe valve.

Installing the body

Welded connection→ Weld or bond valve body in pipeline system.
Other bodies→ Connect valve body to pipeline.

English17

Type 2012
Installation

8.3.2

Install actuator (welded connection)→ Screw actuator into the valve body.
Tightening torques valve body/nipple

Seal

Fig. 19:

Seal→ Replace seal.
WARNING!
Risk due to incorrect lubricants.
Unsuitable lubricant may contaminate the medium. There is a riskof explosion in oxygen applications.
▶ Only used accordingly approved lubricants for specificapplications.

→ 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 thatthe swivel plate lifts up from the valve seat and is not damaged
during the screw-in process.

18

EnglishDN

Tightening torques [Nm]15

45 ± 32050 ± 32560 ± 332

65 ± 34065 ± 35070 ± 36570 ± 3

Tab. 8:Tightening torques valve body/nipple

8.3.3

Turning actuator

The position of the ports can be seamlessly aligned by turning theactuator 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 compressedair (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 theactuator.
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 (see „Fig.
20“).

→ Move the actuator into the required position by turning it clockwise(seen from above).

8.4

Pneumatic connection
DANGER!

Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and ventthe 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 andtemperature 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.

Open-end wrench

If the position of the pilot air ports is unfavourable for installingthe hoses, these can be seamlessly aligned by rotating theactuator by 360°.
Control function A→ Connect control medium to bottom pilot air port of the actuator.
Control function B
Fig. 20:

Rotating with open-end wrench

English19

Type 2012
Maintenance, cleaning→ 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 theactuator.

For usage in an aggressive environment, we recommend
using a pneumatic hose to drain all free pneumatic ports ina neutral atmosphere.
Pilot air hose

Disassembly
DANGER!

9.1

Safety instructions
DANGER!

Risk of injury from high pressure in the system.
▶ Before loosening lines and valves, turn off the pressure and ventthe lines.

WARNING!

Risk of injury from discharge of pressure and escaping medium.
Dismantling a device which is under pressure is hazardous due to asudden discharge of pressure or escaping medium.
▶ Before disassembly, shut off the pressure and vent all lines.

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.

→ Disconnect the pneumatic connection.
→ Disassemble the device.

20

MAINTENANCE, CLEANING

Risk of injury due to electric shock.
▶ Before reaching into the system, switch off the power supply andsecure against reactivation!
▶ Observe the applicable accident prevention and safety regulations for electrical devices!

Pilot air hoses of sizes 6/4 mm or ¼" can be used.

8.5

9English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, theactuator 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 visualinspections:→ Check medium ports for tightness.
→ Check relief bore on the pipe for leaks.

Relief bore

Fig. 21:

9.2.1

Relief bore

Cleaning

Commercially available cleaning agents can be used to clean theoutside.
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.

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Type 2012
Maintenance, cleaning→ For control function A: Pressurise pilot air port with compressedair (6 bar): Valve opens.

→ Place a suitable open-end wrench on the wrench flat of the nipple.
→ Unscrew actuator from the valve body.

→ 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(see „Tab. 9“).

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

Tightening torque values for seat assemblyair.

→ Select tool insert and screw it into the assembly tool.

Assembly tool

Tool attachment(depending on seat
diameter)
Valve seatFig. 22:

22

Fitting
Valve
seat

Housing

Uncoated
valve seats

Coatedvalve seats

Tolerance

DN 4–15

DN 15

25

20

+3

DN 20

DN 20

35

28

+3

DN 25

DN 25

50

40

+5

DN 32

DN 32

80

65

+5

DN 40

DN 40

100

85

+8

DN 50

DN 50

120

120

+8

DN 65

DN 65

150

150

+10

DN 80

DN 80

180

180

+10

DN 100

DN 100

220

220

+10

Tab. 9:Replacing the valve seat

EnglishTightening torques

Tightening torque values for seat assemblyType 2012
Faults10

FAULTS

Fault
Actuator
does notswitchCause

CAUTION!

Elimination→ Connect lower (CFA,

Pilot pressure too low→ Observe pressure

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.

Flow direction
interchanged→ Observe direction of

11.1

Dirt between seal andvalve seat

→ Install dirt trap

The following replacement part sets are available for the globe valve
Type 2012:

Valve seat seal worn

→ Replace valve seat

CFI) or upper (CFB,
CFI) pilot air port

specifications on thetype labelarrow on the type label

seal

Valve isleaking on
the relief
bore

SPARE PARTS

Pilot air portinterchanged

Medium pressure too
high

Valve is not
tight

11

Flow direction
interchanged→ Observe direction ofMedium pressure too
high→ Observe pressure

arrow on the type label

Pilot pressure too low

specifications on thetype label

Packing gland worn

→ Replace packing gland

Risk of injury and/or damage due to incorrect parts!

Replacement part set• 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 forspare parts on our homepage:www.country.burkert.com → Type 2012.

or actuator

Tab. 10: Faults

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Type 2012
Transportation, storage, disposal

11.2

Overview of spare parts

12

TRANSPORTATION, STORAGE,DISPOSALNOTE!
Transport damage!
Seal set

Inadequately protected devices may be damaged during transport.

1• Protect the device against moisture and dirt in shock-resistantpackaging 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.

13
3Valve trim
(valve unit + seat)2

Valve set

DISPOSAL

Environmentally compatible disposal▶ Observe national waste disposal regulations andthe environment.
▶ Collect electrical and electronic appliances separately and dispose of them specially.
Further information can be found on the Internet atcountry.burkert.com

Fig. 23:

24

Overview of spare parts

Englishwww.burkert.com