Instruction Manual

Instruction Manual

D101554X012

Vee-Ball Valves

January 2015

Figure 19. Location of Indicator Hole in Micro-Notch Vee-Balls

FOLLOWER END OF BALL

SHAFT/ASSEMBLY

29B9552-A

E0764

INDICATOR HOLE

NOTCH

CAUTION

Make sure the drive shaft is free of oil or grease, otherwise the taper pin will not seat properly. Failure to properly set the

taper pin or taper key could result in it coming loose while in service. Loosening of the taper key in service could result in

improper valve function and equipment damage.

6. Insert the drive shaft into the valve body bearing (key 10), and into the ball ear (or ball, for Micro-Notch

constructions).Aligntheholeinthedriveshaftwiththeholesintheball.

Note

There is an indicator hole drilled in all Micro-Notch balls. This indicator hole must be oriented closest to the follower end of the

ball/shaft assembly. See figure 19.

7. Insert the taper pin into the ball and drive shaft as shown in figures 20 and 21. The small end o f the taper pin must

be inserted into the larger hole side of the ball ear (or ball, for Micro-Notch constructions), and into the large hole

side of the drive shaft.

Note

The taper pin will not fit correctly if inserted in the wrong direction through the ball ear (or ball, for Micro-Notch constructions) or

throughthedriveshaft.Makesurethedriveshaftandballear(orball,forMicro-Notchconstructions)areinthecorrectorientation

for installing the pin.

D Installing Taper Pins in NPS 1, 1-1/2, and 2 Valves

Note

For NPS 1, 1-1/2, and 2 valves, the taper pins (figure 20) do not require welding.