Adjusting Actuator Travel - Fisher CV500 Instruction Manual

Rotary globe control valve

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Table of Contents

Instruction Manual

D101640X012

12. Secure the ball to the drive shaft (key 3) as follows:

D For NPS 3 through 8:

a. The holes in both the drive shaft (key 3) and the ear of the ball are offset from center. Make certain the holes in

the ear of the ball will align with the hole in the drive shaft.

Note

If the holes in the ball ear do not line up with the hole in the drive shaft, check the slash mark on the splined end of the shaft. Make

sure the shaft and ball are properly oriented.

b. Place the chamfered end of the expansion pin (key 9) into the larger hole in the ball ear (see figure 8).

CAUTION

To avoid damage to the expansion pin, ball, or drive shaft resulting from the application of excessive force on the expansion

pin, use appropriate care when driving the expansion pin through the ball and drive shaft. Use the correct tool. Do not use

excessive force.

c. Drive the expansion pin into the larger hole until the chamfered end of the pin reaches the inner lip of the smaller

hole on the opposite side of the ball. Closely observe the progress of the pin to avoid striking it after it has

reached the lip of the smaller hole.

d. Place the taper pin (key 10) into the open end of the expansion pin. Drive the taper pin into the expansion pin

until the pins, ball, and drive shaft are snug. Do not attempt to drive either pin flush with the ear.

D For NPS 10 and 12, the groove pin holes in both the drive shaft (key 3) and the ear of the ball are offset from center

and have spline ridges. Make certain the holes in the ear of the ball will align with the hole in the drive shaft. Secure

the ball to the drive shaft by using pin punches and driving in the groove pin until it is flush with the surface of the

ball ear. Make certain that the groove pin goes completely through the drive shaft and into the opposite side of the

ball ear.

13. Rotate the ball by hand to check that it rotates properly. If rotation interferes with the valve body, drive out the

taper and expansion pins (keys 9 and 10) for NPS 3 through 8 and the groove pin (key 39) that fastens the drive shaft

to the ball for NPS 10 and 12. Remove the drive shaft (key 3), and repeat this procedure starting with step 5.

14. For NPS 3 through 8, install the pipe plug (key 29).

15. For NPS 10 and 12, install the gasket (key 41), bottom flange (key 40), and then install and tighten the hex nuts

(key 44). Make sure the pipe plug (key 29) is installed in the bottom flange.

16. If the seat ring (key 4), face seals (key 8), and retainer (key 5) need to be installed, complete the Assembly portion

of the Replacing Retainer, Seat Ring, and Face Seals procedure in this manual. If the seat ring has previously been

installed, proceed to Adjusting Actuator Travel in this manual. If the packing has been removed, be sure to refer to

the Packing Maintenance procedures in this manual to replace the packing before installing the actuator on the

valve.