PACKING LUBRICATION
These instructions are for the lubricator or
lubricator isolation valve (Figure 2). If the
lubricator or lubricator isolation valve have been
installed, they will be in place of the pipe plug and
are designed for packing that requires lubrication,
including PTFE composition. CVS Controls
recommends a silicone based lubricant. Lubricant
is not recommended for oxygen services or for
processes that operate in excess of 500F (260
o
C).
To add lubricant to the packing box, turn the
capscrew in a clockwise direction.
For Lubricator/Isolating Valve
1.
Open the isolating valve.
2.
Turn the capscrew in a clockwise direction.
3.
Close the isolating valve.
PACKING LEAKAGE
Spring-Loaded PTFE V-Ring Packing
To eliminate leakage, tighten the packing flange
nuts (key 18, figure 7). If leakage cannot be
controlled in this manner, the packing will need to
be replaced.
Other Packing
If packing other than Spring-Loaded PTFE V-Ring
has been used, attempt to eliminate the leaking
and create a stem seal by tightening the packing
flange nuts to the minimum recommended torque
given in Table 5. If leakage continues, the packing
will need to be replaced.
Figure 2: Lubricator and Lubricator Isolating Valve
New Packing
If tightening the appropriate flange nuts does not
solve the leakage problem and the packing is
relatively new, leakage could indicate damage to
the packing box wall or to the stem. Inspect the
valve stem plug for a good surface finish as well as
the packing box wall for nicks and scratches that
could compromise the seal.
Hint:
If leakage originates from the outside diameter of
the packing, check the packing box wall for nicks
or scratches. If leakage originates from the inside
diameter of the packing, check the stem for nicks
or scratches.
LUBRICATOR
LUBRICATOR/ISOLATING VALVE
Figure 2 - LUBRICATOR AND LUBRICATOR/ISOLATING VALVE