Flowserve 3 Series P6 Type Kämmer Pneumatic Actuator User Manual
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Flow Control Division
Kammer Control Valves
6.1
REMOVE ACTUATOR FROM VALVE BODY
(refer to Figs. 1 + 2)
6.1.1
Shut off the air supply.
WARNING:
Depressurise the line to atmospheric
pressure and drain all fluids from the valve before
working on the actuator. Failure to do so can cause
serious injury.
6.1.2
Remove the coupling (21) from the actuator stem
(24):
Loosen clamping screws (50) and expand the clamping
gap as required, apply air to the actuator to move the
actuator stem around 5% from it's end position. Screw
out the slotted nut (51) and drive the actuator stem out
of the coupling (by applying more air on “Air-to-Open”
or by venting air on “Air-to-Close”). Remove ring (52),
split ring (53) and slotted nut (51).
6.1.3
Attach a crane to the eye bolt (42) to support the
actuator and remove the nuts (20) from the yoke rods
(15). Vent the actuator.
WARNING:
When the actuator is vented on version
“Air-to-Open” the actuator stem will extend and raise
the actuator!
Remove any tubing and raise the actuator from the
valve.
6.1.4
Loosen the coupling locknut and unscrew the coupling
(21) from the plug stem.
6.2
CONNECT ACTUATOR TO VALVE BODY
(refer to Figs. 1 + 2)
6.2.1
Screw the coupling (21) onto the plug stem until the
stem touches the thrust washer (54).
6.2.2
Mount the actuator onto the valve and secure the yoke
rods (15) to the yoke plate (18) using the nuts (20) and
lockwashers (19). Connect an air supply to the actuator
using a valve that can regulate the air to aerate and vent
the actuator.
6.2.3
Fit the slotted nut (51), ring (52) and split rings to the
actuator stem (on "Air-to-Open" versions retract the
stem by applying air).
6
Service to the actuator is best performed when the actuator is removed from the valve body. For the purpose of these instructions, consider
the actuator as a separate subassembly with the procedures described in these instructions being performed in a designated workplace. However,
many service repairs and adjustments can be accomplished in the field while the actuator and valve body are still connected to each other.
Attention: The valve trim is a very sensitive assembly, take care not to damage it. Always remove and replace the actuator together with the top
yoke plate (13) and yoke rods (15).
6.2.4
Carefully enter the actuator stem into the coupling and
screw the slotted nut (51) into the coupling.
6.2.5
Screw the coupling anticlockwise onto the actuator
stem to achieve a pretension of 2 to 4 mm ensuring that
the NAMUR studs (17) are correctly positioned.
CAUTION:
Ensure that the plug assembly is not rotated
with the plug seated. This may cause irreparable dam-
age to the seating faces.
6.2.6
Tighten coupling locknut, slotted nut (51) and clamp-
ing screws (50).
6.2.7
As required reconnect all tubing.
7
DISASSEMBLE ACTUATOR
(see Fig. 1)
7.1
Disassemble body
7.1.1
Unscrew the 8/10 screws (38), crisscross, and in equal
measures until the actuator spring(s) (43) are fully
decompressed and the plate (34) is loose.
7.1.2
Remove plate (34), spring(s) (43) and spring guide
(31).
7.1.3
Loosen and remove the 24 flange screws/nuts (26/23).
7.1.4
Reattach the plate (34) to the spring housing (25). With
suitable lifting equipment attached to the eyebolt (42)
remove the spring housing (25).
7.1.5
Remove the actuator stem (24) complete with dia-
phragm: lifting equipment can be used if an eyebolt is
fitted to the top of the actuator stem.
7.2
Disassemble diaphragm
7.2.1
Clamp the actuator stem below the diaphragm in a vice
(protect the stem against surface damage).
7.2.2
Loosen the lockscrew (29) and screw the nut (30)
clockwise onto the sleeve (28) (secure the sleeve from
rotating with a wrench across the flats on the lower
portion of the sleeve), until the split ring (6) can be
removed.
7.2.3
Remove sleeve (28), diaphragm plate (3), diaphragm
(4), plate (5) and split ring (6).
7.3
Disassemble actuator stem seal and guide
7.3.1
Diaphragm housing (12)
7.3.1.1 Remove ring (7) and press the calked ring (8) out to the
top.
7.3.1.2 Remove the seal kit consisting of backup rings (9) and
O-ring (10).
7.3.1.3 Remove wiper ring (16) and bushing (11).
7.3.2
Guide bushing (33)
2.3.2.1 Remove wiper ring (16) and bushing (11).
Fig. 2: Coupling
52
53
54
24
51
50
STOP!
STOP!