Instruction Manual
D101554X012
Vee-Ball Valves
March 2021
32
Note
There is an indicator hole drilled in all Micro‐Notch balls. The orientation of this hole in the ceramic Vee‐Ball is to the right of the
screw in the ball, and must be located closest to the follower end of the ball/shaft assembly. See figures 19 and 22.
WARNING
Avoid personal injury and property damage from ignition of process fluid caused by sparks from ceramic trim.
Do not use ceramic trim where the process fluid is unstable or if it is an explosive mixture (such as ether and air).
Within the valve body:
8. The threaded hole in the shaft, the screw and screw clearance hole in the ball must be free of oil and grease before
applying an activator.
9. Apply Loctiter Dependr Activator 7387 to threaded hole, screw and ball clearance hole. Assemble the ball onto the
shaft while aligning threaded shaft hole within the ball clearance hole.
10. The flat on the shaft must be oriented so that the head of the cap screw seats on the flat.
11. Apply 5 drops of Loctite Depend 330 into the hole in the ball.
12. Thread the screw into the shaft tightening it to 9.2 NSm (81 inSlbs) torque. Remove excess adhesive, Allow four
hours to cure fully before continuing with assembly.
For all constructions: Refer to Replacing the Ball Seal, Packing Maintenance, and other procedures as necessary to
complete the assembly of the valve.
Cavitrol Hex Installation
The Cavitrol Hex anti-cavitation trim (key 64) is available for the NPS 4 through 12, V150, V300, and V200 flanged,
raised-face body constructions. To retrofit the Cavitrol Hex to an existing valve assembly, special body machining is
required. Two threaded holes must be added to the valve body outlet flange. Contact your
Emerson sales office
for
retrofit information.
Note
The Cavitrol Hex anti-cavitation trim will add 0.5 inch to the face to face dimension of the valve. Refer to table 3 of this manual for
information on required flange stud length.
Assembly
1. The Cavitrol Hex anti-cavitation trim (key 64) is to be installed last, after the Vee-Ball valve body assembly is
complete. The recommended valve orientation for assembly is with the body outlet flange facing up.
2. Ensure the ball is in the open position.
3. Place the gasket (key 65) over the body outlet flange serrated surface as illustrated in figure 28.
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