Type 122A
6
Parts List
Key Description
Part Number
1
Spring Case,
Aluminum
2P901508012
2
Lower Diaphragm Case,
Cast iron
2L918419012
3
Spring
See Table 1
4
Hex Nut, Plated steel
(12 required)
1A3915X0022
5* Stem, 316 Stainless steel
1R177435162
6
Spring Guide,
Plated steel
1D666625072
7
Adjusting Screw,
Plated steel
1D995448702
8
Diaphragm Plate,
Plated steel
1D666428982
9* Diaphragm,
Neoprene (CR)
1D666302102
10 Washer, Plated steel
1D716228982
12* O-ring, Nitrile (NBR)
(3 required)
1E472706992
13* Back-up Ring, Leather
(5 required)
14B0155X012
14 Retaining Washer, Stainless steel
(2 required)
1K786935022
15* Guide Bushing, Iron
(2 required)
1K787021052
16 Self-Tapping Screw, Plated steel
(4 required)
1J336928982
17 Washer, Stainless steel
1K787135022
18* Washer, Neoprene (CR)/Felt
(3 required)
1K787206992
19 Union Nut,
Ductile iron
1E471119062
*Recommended spare parts
20 Snap Ring, Plated steel
1A832648722
21 Body Gasket,
Composition
1A832504032
22* Disk Holder Assembly
Aluminum/Nitrile (NBR)
1R1772000A2
Stainless steel/Nitrile (NBR)
1R1772X00A2
Stainless steel/Fluorocarbon (FKM)
1R1772X0032
23 Body, Cast iron
3/4 NPT
1D3124X0022
1 NPT
1D3125X0022
WCC
Steel
3/4 NPT
1E162622012
1 NPT
1K886222012
24* Upper Valve Seat
Aluminum
1B810309012
Stainless steel
1B8103X0012
25 Name Plate
- - - - - - - - - - -
26 Cap Screw, Plated steel
(8 required)
1B720924052
28 Drive Screw, Plated steel
(4 required)
1E501728982
29 Vent Assembly
EMY602X1-A12
30 Locknut, Zinc-plated steel
1D667728982
31 Upper Spring Seat, Plated steel
1D667125072
36 Bottom Flange, Plated steel
1R177524092
37* Lower Valve Seat
Aluminum
1R177309012
Stainless steel
1R1773X00A2
WCC
Steel
3/4
NPT
1E162622012
1
NPT
1K886222012
Key Description
Part Number