Flowserve 025000 Series - Manual (Page 5)

5
Flow Control Division
Kammer Control Valves
11.00
Only for „spring-to-close“ actuators:
3.2.2 Screw actuator onto plug stem by rotating clockwise,
until the yoke plate just touches the valve housing and
the actuator is aligned forwards.
IMPORTANT: Ensure that the plug assembly is not
rotated with the plug seated. This may cause irrepa-
rable damage to the seating faces.
Only for „spring-to-open“ actuators:
Lift plug stem and screw into the actuator stem until
the distance between „plug in seat“ and „plug raised“
approximately corresponds to the specified stroke.
3.2.3 Tighten clamp and gland nuts.
3.2.4 Adjust the valve plug for seat off by making
adjustments with the coupling.
Note:
Standard coupling
Due to different threads used within the coupling,
rotating the adjusting nut will lengthen or shorten the
connection between actuator stem and plug stem.
D-actuator coupling
Screw couplings on or off actuator/plug stems to
lengthen or shorten the connection between actuator
stem and plug stem.
IMPORTANT: The plug stem must not be turned with
the valve closed, as this can cause damage to the
seal edges of the valve plug and seat ring.
Open valve, make adjustment, close valve and check
for leaks.
3.2.5 After adjusting, secure the locknuts and the travel
indicator disc lying between them against actuator stem
and align the travel indicator on the yoke rod.
REMOVE AND INSTALL ACTUATOR
General Information
We recommend separating the actuator from the valve during
all repair work.
However, many maintenance and adjusting operations can
be carried out in installed condition.
3.1 Remove Actuator
For actuators with spring-to-close, go to 3.1.1
For actuators with spring-to-open, go to 3.1.2
3.1.1 Remove cap and nameplate. Tighten zero adjusting
nut until it just touches the surface of the spring
housing. This relieves the plug from actuator spring
pressure.
3.1.2 Using a wrench, secure the actuator stem against
turning and using a second wrench loosen the
locknuts.
IMPORTANT: The actuator stem must not be turned,
as this will cause damage to the diaphragm.
3.1.3 Loosen gland and actuator clamp nuts.
3.1.4 Secure plug stem against turning and unscrew
actuator from plug stem by turning counter-
clockwise.
IMPORTANT: Ensure that the plug assembly is not
rotated with the plug seated. This may cause irre-
parable damage to the seating faces.
3.1.5 Remove actuator and remove at the same time
locknut, travel indicator disc, gland and clamp nuts.
3.2 Install actuator
Information:
• Before the actuator is installed, it must be
calibrated according to section 3 of the instructions
on „Pneumatic and Electro-pneumatic Actuators“.
• All worn or damaged parts must be replaced.
Reusable parts must be clean.
3.2.1 Position actuator with clamp nut, gland nut, locknuts
and stroke indicator disc on the valve.