Instruction Manual

Instruction Manual

D100422X012

V250 Valve

September 2013

Replacing Drive Shaft, Follower Shaft, Ball, Bushings, and Valve Outlet

Gasket

Thisprocedureistobeperformedtoreplacethevalveball,thedriveshaft,andthefollowershaft,iftheballdoesnot

rotate in response to rotation of the actuator end of the drive shaft, or if there is leakage around the outlet gasket.

Disassembly

CAUTION

When removing the actuator from the valve, do not use a hammer or similar tool to drive the lever off the valve shaft.

Driving the actuator lever off the valve shaft could move the ball (key 2) from the centered position, causing damage to the

ball, the ball seal (key 11), and the valve (key 1).

Use care when removing the actuator lever and, if necessary, use a wheel puller to remove the lever or actuator from the

valve shaft. It is okay to tap the wheel puller screw lightly to loosen the lever or actuator, but hitting the screw with

excessive force could also damage the valve.

1. Remove the cap screws (key 29) from the actuator mounting yoke and, while referring to the actuator instruction

manual for assistance, remove the actuator. If appropriate, remove the clamp and bonding strap assembly (key 40

and 41, figure 3).

2. Remove either the seal protector ring (key 14) or the flow ring (key 14) from the inlet end of the valve assembly by

following steps 1, 2, and 3 of the Replacing Ball Seal or Flow Ring section. For dual seal constructions, note that this

procedure should be repeated on the outlet end of the valve.

3. Proceed as appropriate:

D For single seal constructions and flow ring constructions (figure 11 only), remove the cap screws (key 15).

D Then, remove the valve outlet (key 5) and gasket (key 12).

Note

Perform the following step with the inlet end of the valve assembly facing upward and with the ball (key 2) in the fully open

position.

4. Remove the hex nuts (key 8) from the follower shaft (key 7) side of the valve. Then remove the seal carrier (key 3).

Inspect and replace the seal (key 16) and O-ring (key 23) if necessary.

Note

During the following step, it may be necessary to apply heat to the retainer screw (key 32) to disengage the thread locking

adhesive (high strength) (key 30) that holds the retainer screw in place.

5. Remove the retainer screw (key 32).

6. Using a soft-faced hammer to prevent damaging the end of the follower shaft (key 7), drive the follower shaft into

theflowboreoftheballjustenoughsothatthesplitring (key 31) can be removed. Then remove the split ring.