Instruction manual

Instruction Manual
D500240X012
A31A Valve
October 2012
23
14. Install the packing as described in the Packing Replacement section or in the ENVIRO-SEAL Rotary Packing
Instruction Manual (D101643X012).
Installing the Gasket Retainer
Valves with a two-piece shaft use a gasket retainer and gasket to cover the follower shaft opening in the valve body.
1. Replace the gasket (key 21) and gasket retainer (key 20) over the end of the follower s haft. Use a new gasket.
2. Replace the four hex head bolts (key 23) and lockwashers (key 22) to hold the gasket retainer in place.
3. Be sure to center the gasket over the follower shaft bore before retightening the bolts. Tighten down the bolts
evenly in a crossover or s tar pattern. Refer to table 6 for proper torque values.
Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, always mention the
valve serial number. When ordering replacement parts, also specify the key number, part name, desired material,
using the Parts List t able.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.
Parts List
Key Description
1Valvebody
2Disk
3Driveshaft
4 Follower shaft
5Sealring
6 Backup ring
7 Journal bearing
8Bearingstop
10 Anti-blowout flange
11 Packing flange
12 Packing follower
13 Packing
14 Stud
15 Hex nut
Key Description
16 Anti-blowout ring
17 Hex jam nut
18 Retaining ring
19 Retaining ring, screw
20 Gasket retainer
21 Gasket
22 Lockwasher
23 Hex head bolt
24 Thrust bearing
25 Key (for drive shaft)
26 Tangential pin or disk pin
27 Retaining ring gasket, graphite
29 Nameplate (not shown)
30 Drive screw (not shown)
33 Flow direction arrow (not shown)