DeZURIK
3---36" PEF 100% Port Eccentric Plug Valves
D10453
Page 14
April 2015
Packing Replacement
(Continued)
Replacing Packing Without Removing Actuator
Note:
Lever and nut operated valves require that the actuator be removed before packing can
be replaced. See “
Replacing Packing with Actuator Removed”
section to replace the packing in
these valves.
1. This process can be done with or without pressure in the pipeline.
Caustic, toxic, or hot material in the pipeline can cause personal injury or death
if leakage occurs. Confirm that the material is not harmful.
2. Ensure that the material in the pipeline will not cause injury if leakage occurs.
3. Remove the gland nuts (A13) from the studs (A12), and slide the gland (A11) up the stem of the
plug (A3).
4. Remove the studs (A12) from the bonnet (A6).
5. Cut and completely remove all of the old packing (A9) from the packing chamber in the bonnet
(A6).
6. Cut each new packing ring (A9) radially in one place with a razor-sharp knife.
7. Place each new packing ring (A9)—one at a time with the joints staggered—around the plug
stem (A3) and into position in the packing chamber.
8. Replace the studs (A12) in the bonnet (A6).
9. Push the packing rings (A9) down into position with the gland (A11), and replace the gland nuts
(A13) on the studs (A12).
10. Turn the gland nuts (A13) onto the studs (A12) until they touch the gland (A11), then one more
turn.
11. Restore the pipeline pressure if it was relieved, and check for packing leakage. If leakage
occurs, tighten each packing nut just enough to stop the leakage. Excessive tightening will
cause reduced packing life and higher valve operating torque.