DeZURIK
3---36" PEF 100% Port Eccentric Plug Valves
D10453
Page 18
April 2015
Reassembly
(Continued)
12. Install the actuator—see Actuator Instructions.
13. After actuator is mounted, and shaft key is assembled in
keyseat, secure shaft key by staking with a center-punch
on the end of the shaft. Stake on both sides of the shaft
as shown in Figure 7.
Note:
Do not deform the outside diameter of the shaft.
14. After pipeline flow is restored, check the packing for
leakage.
Note:
If packing leaks, tighten the gland nuts (A13) only
enough to stop the leak. Over tightening the packing will cause
premature packing failure and higher valve operating torque.
15. If the actuator is a powered actuator, reconnect power to
the actuator.
Removing Valve from Pipeline
To remove the entire valve assembly from the pipeline, follow these steps.
This valve is a pressure vessel. The bonnet will blow off the valve if the
bonnet bolts are removed with pressure in the valve and pipeline media can
be hazardous.
Completely release pressure before disassembling the valve.
1. Relieve pipeline pressure and drain portion of system where valve is located.
2.
Close the valve.
Moving parts from accidental operation of power actuator can cause
personal injury or equipment damage. Disconnect and lock out power to
actuator before servicing.
3. If the actuator is powered, disconnect and lock out the pneumatic, hydraulic, or electrical power
to prevent accidental operation of the actuator.
4. Support the valve assembly, then remove the flange bolts.
5. Remove the valve from the pipeline.
Figure 7 – Shaft Key Staking