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Baker Hughes
© 2020 Baker Hughes Company. All rights reserved.
XXII. Recommended Spare Parts
Table 18: Steam Internal Design - Safety Valves
1900 Conventional / P1 & P3 and 1900-30 Bellows / P1
Class
Part Name
Interchangeability
P1, P3
C - Conventional
B - Bellows
Qty. Parts/Same
Valves in Service
Need
Probability
Coverage
Class I
Thermodisc™
P1, P3
C & B
1/3
70 percent
Nozzle
P1, P3
C & B
1/10
Bellows
P1
B
1/3
Adjusting Ring Pin
P1, P3
C & B
1/3
Disc Holder Ring
P1, P3
C & B
1/1
Disc Holder Retainer Ring
P1,P3
C & B
1/5
Spindle Retainer
P1
B
1/1
Gasket (Set)
-
-
-
(1) Cap Gasket
P1
C & B
1/1
(1) Bonnet Gasket
P1
C & B
1/1
(1) Guide Gasket
P1,P3
C & B
1/1
(1) Adj. Ring Pin Gasket
P1, P3
C & B
1/1
(1) Bellows Gasket
P1
B
1/1
Class II
Disc Holder
P1, P3
C & B
1/6
85 percent
Spindle
P1, P3
C & B
1/6
Guide
P1, P3
C & B
1/6
Studs, Base
P1, P3
C & B
1 set/6
Nuts, Base Stud
P1, P3
C & B
1 set/6
Class III
Adjusting Ring
P1, P3
C & B
1/10
95 percent
Spring Assembly
-
-
-
(1) Spring
1
P1, P3
C & B
1/10
(1) Spring Washer (U)
P1, P3
C & B
1/10
(1) Spring Washer (L)
P1, P3
C & B
1/10
Adjusting Screw
P1, P3
C & B
1/10
Class IV
Adjusting Screw Lock Nut
P1, P3
C & B
1/10
99 percent
Cap (Select One):
-
-
-
Packet Lever Assembly
P1
C & B
1/10
(1) Cap Assembly
(1) Release Nut
(1) Release Lock Nut
Plain Lever Assembly
P1, P3
C & B
1/10
(1) Cap Assembly
(1) Release Nut
(1) Release Lock Nut
Limit Washer
2
P1, P3
C & B
1/10
Note 1: If set pressure change is required, consult Baker Hughes for the spring number.
Note 2: Used only in the D & E orifices, machine per instructions on Section XIV.A.
