Instruction Manual
D101554X012
Vee-Ball Valves
March 2021
49
D
3/16 inch diameter weld on NPS 8 through 10 valves, and
D
1/4 inch diameter weld on NPS 12 valves.
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 and figure 23 of this manual when mounting the actuator or
changing actuator styles and positions.
To help ensure correct centering of the ball (key 2) on the seal (key 11), be sure the ball is closed when mounting the
actuator. Do not use a hammer or other tool to drive the actuator lever onto the valve shaft.
Clean the valve shaft and actuator lever splines to be sure the actuator lever will slide on easily. If the lever does not
slide on easily, carefully wedge the ball solidly against the actuator‐side bearing using a screwdriver or similar tool
inserted between the lower ear of the ball and the valve body.
Keep the wedge in place while installing the lever, but again, do not drive on the lever. Remove the wedge after you
have clamped the actuator lever on the valve shaft and connected the lever to the actuator piston rod or diaphragm
rod.
Determining Mounting Position
The actuator can be either right or left‐hand mounted.
Note
Right‐hand mounting—Actuator is on the right side of the valve when viewed from valve inlet.
Left‐hand mounting—Actuator is on the left side of the valve when viewed from valve inlet.
The preferred location of the ball is in the top of the valve body when the valve is open. To convert from right to left
hand‐mounting, turn the valve to position the actuator mounting pad on the left and rotate the ball to the top of the
valve.
The number one V‐notch controls flow on right‐hand mounting. Turn the valve 180 degrees, and rotate the ball to the
top of the valve to obtain left‐hand mounting. The number two V‐notch controls flow for this construction. See figure
33.
Determining Closed Position
1. The valve must be removed from the line to check the position of the ball.
WARNING
The ball closes with a shearing, cutting motion. To avoid personal injury, keep hands, tools, and other objects away from
the ball while stroking the valve.
