CV500 Valve
Instruction Manual
Form 5302
July 2006
11
Figure 6. Packing Arrangements (Continued)
PTFE/COMPOSITION OR GRAPHITE ENVIRO-SEAL
PACKING ARRANGEMENTS
C0774-1 / IL
CAUTION
During assembly, handle the retainer,
seat ring, and face seals carefully.
Critical areas that must be protected
are the threads and inner surface of
the retainer (key 5), the sealing
surfaces of the face seals (key 8), the
face seal grooves in the seat ring (key
4), the shutoff surface of the seat ring,
and the face seal surface in the valve
body.
A new retainer gasket (key 11) is required whenever
the retainer (key 5) is removed. Other parts that are
in good condition can be reused.
Disassembly
WARNING
Refer to the WARNING at the
beginning of the Maintenance section
in this instruction manual.