Instruction Manual
D101643X012
ENVIRO-SEAL System - Rotary Valves
February 2019
4
You must remove the actuator from the valve when you install ENVIRO‐SEAL packing systems. To allow proper
readjustment of the valve disk position, it is recommended that you remove the valve from the pipeline. Refer to
appropriate valve and actuator instruction manuals.
WARNING
If a spring‐return actuator is used, be sure the actuator spring is resting on its travel stop. If something is obstructing shaft
rotation, it is possible that disconnecting the shaft connector will allow the spring to force the actuator to the end of its
rotation, resulting in possible personal injury or property damage. Refer to the appropriate valve and actuator instruction
manuals to remove the actuator.
Installing an ENVIRO‐SEAL Packing System
Note
When installing an ENVIRO‐SEAL packing system into an insulated valve, do not cover the packing springs with insulation.
Note
The valve shaft surface condition is critical in obtaining a good seal. If the valve shaft surface is scratched, nicked, or worn, replace
the valve shaft before installing the ENVIRO‐SEAL Packing System.
Refer to the appropriate valve instruction manual to replace the valve shaft.
Key number locations are shown in figures 2 and 4 for Vee‐Ball, eccentric plug, 8560, and A41 valves, and in figures 3
and 5 for A11, A31A, A31D and 8532 valves.
1. If you are installing an ENVIRO‐SEAL packing system in an existing valve, remove existing packing nuts, packing
flange, jam nuts, anti‐blowout flange, packing follower, and any other external packing components from the valve
body.
CAUTION
Because the valve shaft surface condition is critical in obtaining a good seal, caution must be used when removing existing
internal packing parts. Do not scratch, nick or dent the valve shaft.
2.
For A11, A31A, A31D and 8532 valves,
remove the anti‐blowout wire that surrounds the valve shaft.
3.
For all valves,
remove packing and all other internal components from the packing box.
4. Inspect the existing valve shaft. If necessary, replace the valve shaft. Refer to the appropriate valve instruction
manual to replace the valve shaft.
