Instruction Manual

Instruction Manual
D101554X012
Vee-Ball Valves
January 2015
17
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
suretheopensideoftheradialsealfacesawayfromtheball.
D Install the wave spring (key 13) into the seal protector ring (key 3).
D Install the HD metal 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 metal 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 t he 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 metal 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 metal seal is level.
D The HD metal 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 metal 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 metal 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 ontheringuntiltheringsnaps.Besuretomatchthe
broken ends together as you install it on the HD metal seal (key 11).
D Lay the HD metal 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 throug h 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 metal 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 i n this procedure.
c. For NPS 10 and 12 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.