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Burkert Type 2002 User Manual

Page 3

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ReplaCING THe ValVe SeT

DAnGer!

Danger – high pressure!
• Turn off the pressure and vent the lines before loosening lines or

valves.

Risk of injury from improper maintenance!
• Maintenance may be performed by authorized technicians only!
• To screw on or unscrew valve body or actuator, use an open-end

wrench, never a pipe wrench, and observe tightening torques.

Mount valve

1

on the body.

CAutIon!

Danger through taut springs!
• Carefully open piston actuator!

Only for control function A (CFA): Release cover

31

with special

wrench until the springs are completely relaxed, holding up the
actuator body

12

against the hexagon.

For information about the special wrench, see:

www.burkert.com

→ Type 2000 → Maintenance-EU-ML,

section Installation wrench.

For control function A (CFA): Pressurize lower control air con-
nection with compressed air (5 bar).

Unscrew actuator on the valve body

1

.

Support swivel plate

3

with the help of a prism, knock out pin

4

with a pin punch and pull out swivel plate.

Mount new swivel plate

3

align and secure with new pin

4

.

note!

For valves with "R" sleeves

3*

, insert in swivel plate

3

and align

drilled holes.

Pin

Swivel plate

Graphite seal

English

Calk pin bores on both sides of the swivel plate with chisel or prick
punch.

Carefully remove old graphite seal

5

from valve body

1

.

Insert new graphite seal

5

.

Only for VA body: Lubricate nipple thread

6

with Klüber paste

UH1 96-402.

Only for type 2002: Use sealing tape.

note!

Damage to the seat contour!
• During installation, take care that there is no damage to the seat

contour.

• Observe tightening torques according to “Tab. 1”.

For control function A (CFA): Pressurize lower control air con-
nection with compressed air (5 bar).

Screw in valve actuator with nipple

6

into the body.

Only for control function A (CFA): Rescrew cover

31

with

special wrench.

Check the valve for function and leaks.

Tightening torques

DN

(mm)

Tightening torques

(Nm)

15

45

20

50

25

60

32

65

40

65

50

70

65

70

Tab. 1: Valve body tightening torques

English

CHaNGING THe Seal SeT

Change seal set with actuator with control function A (locked by
spring force in the rest position), control function B (opened by spring
force in the rest position) and control function I (dual acting)

note!

The actuator must be completely removed to replace all the seals.
A special Bürkert assembly sleeve is required to mount the packing
gland.

Do not use any pointed or sharp instruments!

Mount valve

1

on the body.

CAutIon!

Danger through taut springs!
• Carefully open piston actuator!

Unscrew cover

31

with special wrench holding up the actuator body

12

against the hexagon.

Only for actuator size G (100 mm) and H (125 mm): Remove
washer

40

.

For control function A: Remove pressure springs

28

29

.

Remove position indicator

26

with Allen key.

For control function A (CFA): Pressurize lower control air con-
nection with compressed air (5 bar).

Screw actuator on the nipple

6

out of the valve body

1

.

Carefully screw in actuator on the swivel plate

3

(only put pressure

on the upper section of the swivel plate).

Release nuts

25

.

Remove pistons

22

with supporting washer

24

.

The following operations must only be carried out with valves
without identification "R":

For control function A: Remove filler piece

19

with intermediate

washer

20

and O-ring

21

.

For control function B: Remove intermediate washer

20

, O-ring

21

and pressure spring

35

.

For control function I: Remove filler piece with intermediate
washer

20

and O-ring

21

(spring

35

missing).

Remove spindle

2

from actuator body

12

and clean spindle thread.

Clamp actuator on the nipple hexagon

6

.

English

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