Emerson Fisher Control-Disk Instruction Manual download pdf (Page 13)

Instruction Manual

D103298X012

Control-Disk Valve

May 2011

D For the metal seal ring assembly, place the seal ring assembly onto the disk. Set the retainer onto the seal, making

sure proper alignment between the seal and retainer has been achieved.

6. Attach the seal retainer (key 2) and the retainer clips (key 13) to the valve body and secure with the machine screws

(key 14).

7. Be certain the disk is closed before installing the valve according to the Installation section on

page 4 of this manual.

Replacing the Disk, Shafts, or Bearings

Key numbers in this procedure are shown in figure 11 unless otherwise indicated.

1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the

process media from both sides of the valve. If using a power actuator, also shutoff all pressure lines to the power

actuator, release all pressure from the actuator. Use lock‐out procedures to be sure that the above measures stay in

effect while you work on the equipment.

CAUTION

When removing the actuator in the following step, use a wheel puller to separate the actuator parts from the valve shaft.

Do not drive the actuator parts off the valve shaft because this could damage valve trim components.

2. Remove the actuator per instructions in separate actuator instruction manuals, then remove the cap screws and

nuts (keys 35 and 36). Remove the clamp (key 130, figure 4) if the strap (key 131, figure 4) is used.

3. Remove the packing flange nuts and the packing flange (key 26) if used and pull out the packing follower (key 25).

Disassembly

1. Remove the seal ring assembly according to steps 3 and 4 of the Replacing Seal Ring section on page 12 of this

manual.

2. Remove hex nuts, blind flange, gasket, spacer (if present), follower spring seats, and follower spring (keys 19, 17,

16, 15, 9, and 12).

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Emerson Fisher Control-Disk Instruction Manual Page 13