IX. 2900 Series Pilot Operated Safety Relief Valves (Cont.)
F. Metal Seat Valve for Section I Liquid Service (LA1)
20
1A
1/2” NPT
DRAIN
5
6
12
3
4
11
10
9
8
7
15
16
1
2
13
14
Figure 6: Metal Seat Construction for Section I Liquid
Service (LA1)
Part
No. Nomenclature
1
Base
2
Nozzle
3
Coverplate
4
Coverplate Gasket
5
Main Valve Piston
6
Main Valve Piston Spring
Energized Seal
7
Disc
8
Disc Retainer
9
Disc Holder
10 Guide
11 Guide Gasket
12 Guide Ring
13 Stud (Base)
14 Nut (Base)
15 Plug/Adaptor
16 Plug/Adaptor Gasket
20 Spring
21 Integral Sensing Ring
22 Integral Sensing Gasket
23 Integral Sensing Tube
IX. 2900 Series Pilot Operated Safety Relief Valves (Cont.)
Figure 7: Main Valve Construction - Integral Sense
21
22
23
Consolidated 2900 Series Generation II POSRV Instruction Manual
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