Fisher Vee-Ball V200 - Installing High Temperature HD Ball Seals

Instruction Manual
D101554X012
Vee-Ball Valves
June 2017
19
b. For all NPS 3 through 8 valves and NPS 10 and 12 valves without attenuator:
D Lubricate and install the radial seal (key 37) into the appropriate groove in the seal protector ring making
sure the open side of the radial seal faces away from the ball.
D Install the wave spring (key 13) into the seal protector ring (key 3).
D Install the HD seal (key 11) into the seal protector ring (key 3), past the radial seal. While pushing it past the
radial seal, make sure the HD seal is level. Go to step 5 in this procedure.
c. For NPS 10 and 12 valves with attenuator:
D Lubricate the radial seal with lithium grease and install the radial seal (key 37) into the appropriate groove
in the seal protector ring making sure the open side of the radial seal faces away from the ball.
D Install the wave spring (key 13) into the seal protector ring (key 3).
D To install the retaining ring (key 41), find one of the free ends of the ring. Insert the free end into the groove
in the seal protector ring. Work around the ring, pressing it into the groove until the ring is completely in its
groove.
D Install the HD seal (key 11) into the seal protector ring (key 3), past the radial seal. While pushing it past the
radial seal, make sure the HD seal is level.
D The HD seal uses a retaining ring (key 41) for NPS 10 and 12 valves only. This retaining ring is an
octagonal‐shaped support wire. Go to step 5 in this procedure.
Installing high temperature HD ball seals:
a. For NPS 1, 1-1/2 and 2 valves: The older and newer designs of the NPS 1 and 1-1/2 seal protector rings are
functionally the same, but are different lengths and not interchangeable. All part numbers in this manual are for
the newer design. Refer to figure 7 for ring dimensions.
D Place the wave spring (key 13) on top of the HD seal (key 11).
D Break the piston ring (key 133) into two approximately equal pieces either by placing the ring over a pencil
or similar object and applying pressure down‐wards on the ring until the ring snaps. Be sure to match the
broken ends together as you install it on the HD seal (key 11).
D Lay the HD seal (key 11) down on a flat surface and push the seal protector ring (key 3) into place. Make
sure the seal is level. Go to step 5 in this procedure.
b. For NPS 3 through 8 valves:
D Place the piston ring (key 133) and retaining ring (key 132) into the appropriate groove in the seal protector
ring (key 3). The piston ring has one break in it; do not break it further.
D Install the wave spring (key 13) into the seal protector ring (key 3).
D Lay the HD seal (key 11) down on a flat surface and push the seal protector ring (key 3) past the piston ring
(key 133) and into place. Make sure the seal is level. Go to step 5 in this procedure.