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IX. 2900-40 Safety Relief Valves (Cont.)
C. 39PV Pilot Valve
13
6
7
19
8
9
12
20
34
27
23
24
10
11
17
1/4"-
18 NPT
22
3
16
Figure 3: 39PV Pilot Valve Construction
18 | BHGE
21
OUT OF POSITION
15
1
2
20
12
1/4" - 18 NPT
VENT
25
8
14
18
1/4" - 18 NPT
DRAIN
26
24
SHOWN 90°
5
4
HIGH PRESSURE
Part
Nomenclature
No.
1
Main Base
2
Adjuster Cap
3
Adjuster Top
4
Adjuster Bottom
5
Adjuster Lock Nut
6
Compression Screw
7
Compression Screw Lock Nut
8
Spring Washer
9
Spring
10
Insert Top
11
Insert Bottom
12
Main Piston
13
Cap (Compression Screw)
14
Cap Screw (Top Plate)
15
O-Ring (Adjuster Bottom)
16
O-Ring (Adjuster Top)
17
O-Ring (Insert)
18
O-Ring (Top Plate)
19
Bonnet
20
Spring Seal (Main Piston)
21
Spring Seal (Adjuster Top)
22
Spring Seal (Insert)
23
Field Test Connector
Vent Assembly/Bug Screen (Field
24
Test Connection)
25
Vent Assembly (Bonnet Vent)
26
Pipe Plug (Pilot Valve)
27
Set Screw (Bonnet)
34
Top Plate
Note 1: Standard material is a filter
plug. For special materials,
vent assembly is supplied.
© 2019 Baker Hughes, a GE company. All Rights Reserved.
1
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