Packing Lubrication; Packing Maintenance - Emerson Fisher Large ET Instruction Manual

Instruction Manual
D103553X012
Figure 3. Lubricator and Lubricator/Isolating Valve
10A9421-A
AJ5428-D
LUBRICATOR/ISOLATING VALVE
A0832-2
Note
Whenever a gasket seal is disturbed by removing or shifting gasketed parts, a new gasket should be installed upon reassembly.
This is necessary to ensure a good gasket seal because the used gasket might not seal properly.
Note
If the valve has ENVIRO-SEAL live-loaded packing or HIGH-SEAL ULF live-loaded packing installed, see the Fisher instruction
manuals titled ENVIRO-SEAL Packing System for Sliding-Stem Valves (D101642X012) or HIGH-SEAL ULF Live-Loaded Packing
System (D101453X012) (as appropriate) for packing instructions.

Packing Lubrication

If a lubricator or lubricator/isolating valve (figure 3) is provided for PTFE/composition or other packings that require
lubrication, it will be installed in place of the 1/4 NPT pipe plug (key 14, figure 5). Use a silicon-base lubricant. To
operate the lubricator, turn the cap screw clockwise to force the lubricant into the packing box. The
lubricator/isolating valve operates the same way except the isolating valve must first be opened and then closed after
lubrication is completed.

Packing Maintenance

This procedure does not cover ENVIRO-SEAL or HIGH-SEAL packing; refer to separate manuals for instructions on those
packing types.
Key numbers are shown in figure 4 unless otherwise indicated.
For spring-loaded single PTFE V-ring packing, the spring (key 8) maintains a sealing force on the packing. If leakage is
noted around the packing follower (key 13), check to be sure the shoulder on the packing follower is touching the
bonnet. If the shoulder is not touching the bonnet, tighten the packing flange nuts (key 5, figure 5) until the shoulder
is against the bonnet. If leakage cannot be stopped in this manner, proceed to the Replacing Packing section.
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LUBRICATOR
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Large ET and ED Valves
December 2011
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