Instruction Manual
D101554X012
Vee-Ball Valves
March 2021
34
For NPS 1, 1-1/2, and 2 valves: Follow one of the procedures below:
D When viewed from the valve body inlet, the ball is in the proper position when both V‐notches of the ball are
centered between the machined diameter of the ledge that supports the seal.
D If the ball has a spot machined on the top, align that spot to the exact center of the seal cavity.
4. Adjust the actuator linkage as described in the appropriate actuator instruction manual until the ball is centered in
the closed position. A line is stamped on the actuator end of the drive shaft (see figure 23) to indicate the ball
position.
Use the appropriate actuator instruction manual and figure 23 of this manual when mounting the actuator or
changing actuator styles and positions.
The Micro‐Notch ball closed position is approximately 5 degrees closed from the first point of flow. This establishes the
zero degree position for the ball.
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