Parts Ordering; Parts List - Fisher R622 Instruction Manual

Type R622
8. Remove lever (key 27)
9. Remove stem assembly (key 28)
10. Remove disk (key 33) from stem assembly
(key 28). Examine the disk. If it is nicked, cut, or
otherwise damaged, the disk should be replaced.
11. Put together in reverse order.
Inlet Screen and Orifice Replacement
1. Remove the regulator from line.
2. Remove machine screws (key 4).
3. Remove inlet O-ring (key 5). Lubricate a new inlet
O-ring and place on inlet fitting (key 3).
4. Remove inlet screen (key 13). Clean and/or
replace the inlet screen, if necessary.
5. Install the inlet screen (key 13) and inlet fitting
(key 3). Then install and tighten the machine
screws (key 4) to 15 to 30-inch-pounds-force (2 to
4 N•m).
6. To replace the orifice, follow steps 1 through 4,
and then remove orifice (key 24) from body.
Examine the seating edge of the orifice. If it is
nicked or rough, it should be replaced. Treat the
external threads of the new orifice with lubricant
before reassembling, tightening to 15 to
20-inch-pounds (2 to 3 N•m) of torque.
7. Install the inlet screen (key 13) and inlet fitting
(key 3). Then install and tighten the machine
screws (key 4) to 15 to 30-inch-pounds-force
(2 to 4 N•m).
*Recommended spare part
®
Delrin is a mark owned by E.I. du Pont de Nemours and Co.
6

Parts Ordering

The type number, orifice size, spring range, and date
of manufacture are located on the spring case. Always
provide this information in any correspondence with
your local Sales Office regarding replacement parts
or technical assistance. If construction changes are
made in the field, be sure that the information label is
also changed to reflect the most recent construction.

Parts List

Key Description
1 Body, Aluminum
2 Pipe Plug, Carbon steel (2 required)
3 Inlet Fitting, Aluminum
4 Machine Screw, Carbon Steel (12 required)
5 O-Ring, Nitrile (NBR)
13 Inlet Screen, 18-8 Stainless steel
16 Relief Spring, 302 Stainless steel
17 Diaphragm
18 Pusher Post, Acetal
19 Lower Spring Seat, Zinc-plated steel
20 Relief Spring Retainer, 18-8 Stainless steel
22 Spring, Zinc-plated steel
®
23 Adjusting Screw, Delrin
For use with inches w.c. springs
For use with psig spring
24 Orifice, Aluminum
25 Spring Case Assembly, Aluminum
26 Vent Screen, 18-8 Stainless steel
27 Lever, Zinc-plated steel
28 Stem Assembly
29 Pin Lever, 18-8 Stainless steel
30 Machine Screw, Carbon-plated steel (2 required)
31 Closing Cap
33* Disk, Nitrile (NBR)
38 O-Ring, Nitrile (NBR)
41 Information Label
Part number
T80567T0GY2
1D8293T0022
T21176T0BK2
T13526T0012
T14431T0012
T14436T0012
T13612T0012
T21163T0012
T40653T0012
T14396T0012
T13613T0012
See Table 1
T21186T0012
T21202T0012
T21126T0012
T40655T0022
T1121338982
T21197T0012
T14452T0012
T14397T0012
1E175828982
T21187T0012
T14437T0012
T14422T0012
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