Consolidated 2900-40 Series POSRV Instruction Manual
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© 2020 Baker Hughes Company. All rights reserved.
XV. Inspection and Part Replacement
.............................................................................................................................37
1. Guide ................................................................................................................................................................37
2. Base ..................................................................................................................................................................37
3. Cover Plate .......................................................................................................................................................37
4. O-Ring Retainer ................................................................................................................................................37
5. Nozzle ...............................................................................................................................................................37
6. Spring ................................................................................................................................................................37
7. Standard Metal Seated Disc .............................................................................................................................37
8. Thermodisc™ Metal Seated Disc .....................................................................................................................37
9. O-Ring Seated Disc ..........................................................................................................................................38
10. Disc Holder .......................................................................................................................................................38
11. Solid Metal Gaskets ..........................................................................................................................................38
12. Main Valve Piston ..............................................................................................................................................38
XVI. Reassembly of 2900-40 Main Valve
......................................................................................................................39
A. Lubricants and Sealants ...................................................................................................................................39
B. Assembly Procedure with Metal Seats .............................................................................................................39
C. Assembly Procedure with O-Ring Seats ...........................................................................................................39
XVII. Disassembly of Pilot Valve
....................................................................................................................................43
A. 39PV07/37 Disassembly ..................................................................................................................................43
B. Cleaning ...........................................................................................................................................................43
XVIII. Part Inspection of Pilot Valve
................................................................................................................................46
A. 39PV07/37 ........................................................................................................................................................46
XIX. Reassembly of Pilot Valve
.....................................................................................................................................47
A. Lubricants and Sealants ...................................................................................................................................47
B. Assembly of 39PV07/37 ....................................................................................................................................47
XX. Setting and Testing
................................................................................................................................................50
A. General Information ..........................................................................................................................................50
B. With Standard Options ......................................................................................................................................50
C. With Sensing Ring Option .................................................................................................................................51
D. Functional Testing .............................................................................................................................................51
E. Field Testing of POSRV Assembly ...............................................................................................................53-54
E.1 Mitigation of Main Valve Instatility During Startup .....................................................................................55
E.2 Artificial Actuation of Pilot and Main Valve
................................................................................................56
E.2.1 Artificial Actuation of Pilot Only
..............................................................................................................56
E.3 Hydrostatic Testing and Gagging ..............................................................................................................57
XXI.
Troubleshooting .......................................................................................................................................................58
XXII. 2900-40 Series POSRV Options
............................................................................................................................59
A. Backflow Preventer
...........................................................................................................................................59
A.1 Disassembly Instructions ...........................................................................................................................59
A.2 Cleaning .....................................................................................................................................................59
A.3 Parts Inspection .........................................................................................................................................59
A.4 Reassembly Instructions ............................................................................................................................59