Instruction Manual

Instruction Manual
D101554X012
Vee-Ball Valves
January 2015
12
D It might be necessary to remove the HD metal seal by carefully tapping it with a soft punch and hammer.
Take care not to damage the seal protector ring.
D NPS 3 through 12 valves, if the seal is difficult to push out, it is recommended that a seal removal plate be
used to press the HD metal seal out of the seal protector ring. Refer to figure 12 for dimensions of t he seal
removal plate.
D NPS 10 and 12 valves with an attenuator only: Remove the retaining ring (key 41) in the seal protector ring.
This retaining ring is an octagonal-shaped support wire. To remove the retaining ring, find one of t he free
ends of the ring. Use a screwdriver or similar tool to pry inward and upward until the ring is removed.
3. Inspect the gasket and sealing surfaces on the valve body (key 1 or 1A), the seal protector ring (key 3), Vee-ball (key
2), and the retaining ring (key 41 for NPS 10 and 12 valves with an attenuator only). Be sure the sealing surfaces are
not damaged.
4. If replacement of the ball, shafts (keys 6 or 9), or bearings (key 10) is needed, proceed to the Bearing and Ball
Maintenance procedure. If only the seal is to be replaced, proceed to the Assembly steps below.
Assembly
Refer to figures 8, 9, and 10 for key number locations during seal installation. Valve key number locations are shown in
figures 24, 25, and 26.
1. Thoroughly clean all parts that are to be re-used and obtain replacement parts. Be sure that all sealing surfaces are
in good condition without scratches or wear. If the valve has been installed between line flanges and the flange
studs and nuts have been tightened, always replace the gasket (key 15) with a new gasket.
2. To help ensure correct side-to-side centering of the ball (key 2) on the seal (key 11), make sure the ball is closed
while you install the seal or flow ring and seal protector ring. Insert a screwdriver, pry bar, or similar tool between
thelowerearoftheballandthevalvebody(seefigure6).
3. Usetheprytomovetheballtightlyagainstthebearingontheactuatorsideofthevalve.Becareful,excessiveforce
may damage the ball. Keep the ball in that position until you have completed seal or flow ring installation. Check
the ball's position periodically, and re-center if necessary, during lever assembly and packing adjustments.
WARNING
The V ee-Ball closes with a shearing, cutting motion, which could result in personal injury. To avoid injury or property
damage, keep hands, tools, and other objects away from the Vee-Ball while stroking the valve.
4. Install the seal.
CAUTION
Due to the Vee-ball shape, take care to never completely rotate either the front skirted edge or the circular back edge of the
ball out of the ball seal as the seal could be damaged.