Consolidated 13900 Series POSRV Maintenance Manual
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© 2018 Baker Hughes, a GE company. All rights reserved.
XV. Disassembly of Main Valve (Contd.)
XVI. Inspection and Part Replacement
(Repair of Main Valve Disc)
B. Main Valve Cleaning
13900 Series Safety Relief Valve internal parts may be cleaned with industrial
solvents, cleaning solutions and wire brushes. If you are using cleaning solvents, take
precautions to protect yourself from potential danger from breathing fumes, chemical
burns or explosion. See the solvent’s Material Safety Data Sheet for safe handling
recommendations and equipment.
It is not recommended to “sand blast” internal parts as it can reduce the dimensions of
the parts. The base, bonnet and cap castings may be sand blasted with care not to erode
internal and machined surfaces.
1. When necessary to remove the Floating Washer (14),
it is necessary to first remove the Retainer Lock Ring
(16), (refer to Figure 13). Truarc Pliers (BHGE Part No.
5153305) can be used to remove the lock ring (16). The
other parts, Washer Retainer (15) and Floating Washer
(14) can now be removed. Reassemble in reverse order.
2. Whenever Main Valve Disc (7) is removed, the Drilled
Drain Plug (6) should be inspected and passages
cleaned by the insertion of a wire of sufficient length.
3. To replace the O-Ring Seal Seal (11), or remove the
O-Ring Seat Retainer (5), it is necessary to remove the
Retainer Lock Ring (4) (Refer to Figure 13). Place the disc
on the compression fixture (BHGE Part No. 9336901),
(Refer to Figure 14), and compress the O-Ring seat
retainer. Remove the retainer lock ring with Truarc
Pliers (BHGE Part No. 5153304).
CAUTION
Extreme care should be extended to prevent the lock
ring from slipping off the pliers.
Remove the O-Ring seat retainer and then O-Ring seat
seal. To reassemble the seat seal, clean all surfaces
thoroughly, install a new O-Ring lubricated lightly with
silicone lubricant, replace O-Ring seat retainer and
then retainer lock ring. A slight compression on the
seat retainer will be required to allow the retainer lock
ring to seat properly in the groove.
Follow recommendations
for safe handling in the
solvent's Material Safety
Data Sheet.
DISC DRAIN
PLUG
RETAINER LOCK RING (16)
WASHER RETAINER (15)
FLOATING WASHER (14)
DISC (42A)
DISC
O-RING SEAT
RETAINER
O-RING SEAT SEAL
RETAINER
LOCK RING
O-RING
RETAINER
O-RING
DISC
COMPRESSION
FIXTURE
Figure 13: Main Disc
Figure 14: O-Ring Retainer Hold Down Fixture
