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8580 Valve
April 2020
Figure 5. Packing Arrangement Details
PTFE V‐RING
GE39901‐A
GE40113‐A
SINGLE PTFE PACKING
NOTES:
1
WITH CONDUCTIVE PACKING, THE FEMALE ADAPTOR IN PTFE V‐RING PACKING IS CARBON‐FILLED PTFE.
2
APPLY LUBRICANT.
THESE TWO SURFACES SHOULD REMAIN PARALLEL AS YOU ALTERNATELY AND EVENLY TIGHTEN THE PACKING NUTS (KEY 28).
3
1. Tighten the packing flange nuts alternately and evenly, keeping the packing flange parallel with the valve flange
(see figure 5), until the Belleville springs are compressed 100% (or completely flat).
D For PTFE packing, loosen each packing flange nut one half turn (180_ of rotation).
D For Graphite packing, loosen each packing flange nut one quarter turn (90_ of rotation).
The target load of 85% compression has now been reached. If leakage continues, replace the packing components as
described in the following procedures.
Replacing the Packing
To replace the packing, the actuator must be removed. Also, the valve should be removed from the pipeline to allow
proper readjustment of the disk position.
10
GE39986‐A
STANDARD PACKING
GE40118‐A
ENVIRO‐SEAL PACKING
Instruction Manual
D103300X012
GRAPHITE RIBBON
GRAPHITE PACKING
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