Instruction Manual

Instruction Manual
D101554X012
Vee-Ball Valves
January 2015
29
Figure 22. Screw Installation for Fisher V200, NPS 1 Valves with VTC Ceramic Micro-Notch Ball Construction
SCREW (KEY 4)
BALL (KEY 2)
DRIVE SHAFT
(KEY 6)
LOCK COMPOUND
(KEY 49)
44B0241-B
A6961
INDICATOR HOLE
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 w here 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(81inSlbs) 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.
Actuator Mounting
Use the appropriate actuator instruction manual, this section o f this manual, and figure 23 of this manual when
mounting the actuator or changing actuator styles and positions.
1. To help ensure correct centering of the Vee-Ball (key 2)ontheseal(key11),besuretheballisclosedwhen
mounting the actuator (for applications other than Spring Return Fail-Open).