DeZURIK
3---36" PEF 100% Port Eccentric Plug Valves
D10453
Page 12
April 2015
Packing Replacement
Replacing Packing with Actuator Removed
To replace the packing without removing actuator, see the
“Replacing Packing Without Removing
Actuator”
section.
See Figure 3 for parts identification.
1. Discontinue pipeline flow and relieve pipeline pressure.
2. Scribe the actuator and valve bonnet for alignment when reassembling.
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.
When an eccentric valve is mounted in a vertical pipeline—or mounted in
a horizontal pipeline with the plug stem horizontal—gravity can cause the
plug to swing to a lower position in the valve body when the actuator is
removed. Place the plug in the lowest position before removing the
actuator
.
4. Remove the actuator from the valve. See Actuator Instructions.
5. Remove the actuator adaptor from the valve.
6. Remove the gland nuts (A13), then slide the gland (A11) off the plug shaft (A3).
7. Pull the packing (A9) out of the bonnet (A6).
8. For valves with gear actuators, lubricate the new packing (A9), then install it one ring at a time
in the sequence shown in Figure 4.
Figure 4 - Correct Packing Installation Sequence