A. Lubricants and Sealants
1. Operating temperatures below -40°F (-40°C),
consult the Factory.
2. Operating temperatures between -40 and +505°F
(-40 and 262.7°C)
a. Lubricate all o-rings, except silicone, spring
energized seals, and back-up rings sparingly with
silicone grease (BHGE P/N SP505).
b. Seal all pipe threads with Teflon tape or pipe
sealant (BHGE P/N SP364-AB).
c. Lubricate standard threads and bearing points
with Jet-Lube, BHGE non-metallic, product code
#14613 (BHGE P/N4114510 or 4114511).
3. Operating temperatures above +505°F (262.7°C)
a. Lubricate all o-rings, except silicone, spring
energized seals, and back-up rings sparingly with
silicone grease (BHGE P/N SP505).
b. Seal all pipe threads with Teflon tape or pipe
sealant (BHGE P/N SP364-AB).
c. Lubricate standard threads and bearing points
with nickel graphite N5000 (BHGE P/N 4114507)
or equivalent.
B. Assembly Procedure with Metal
Seats
1. If the valve Nozzle was removed, apply thread
lubricant to the nozzle threads before reinstalling in
the Base. Insert it into the inlet flange of the Base,
and torque to the correct value listed in Table 9.
2. Assemble the disc/disc holder as follows:
a. Prior to assembly of the Disc into the Disc
Holder, remove the Disc Retainer from the back
of the Disc. Use 1000 grit grinding compound
on the bearing surface to grind the Disc into the
Disc Holder to properly establish the bearing
surface.
b. For “D” through “U” orifice valves, place the
Disc Retainer into the groove in the disc.
The Disc with the Disc Retainer should “snap”
into the Disc Holder pocket with moderate
finger or hand force. Do not use excessive force
to assemble these parts. Be sure that the Disc
is free to “wobble” after it is in place. For V and
W orifice discs, place Disc into Disc Holder and
secure Disc Retaining Bolts.
XVI. Reassembly of the 2900 Main Valve
Table 10: Disc Holder Torque Values
Orifice
No. of
Bolts
Bolt Size
Torque
in-lbs
N-m
D, E, F
1
1/4-28UNF 75 ± 3 8.5 ± 0.3
G
1
1/4-28UNF 75 ± 3 8.5 ± 0.3
H
1
1/4-28UNF 75 ± 3 8.5 ± 0.3
J
3
#10-32UNF 30 ±
2
3.4 ± 0.2
K
3
#8-32NC
18 ± 1 2.0 ± 0.1
L
3
#8-32NC
18 ± 1 2.0 ± 0.1
M
4
#8-32NC
18 ± 1 2.0 ± 0.1
N
4
#8-32NC
18 ± 1 2.0 ± 0.1
P
4
1/4-28UNF 75 ± 3 8.5 ± 0.3
Q
4
1/4-28UNF 75 ± 3 8.5 ± 0.3
R
4
1/4-28UNF 75 ± 3 8.5 ± 0.3
T
4
1/4-28UNF 75 ± 3 8.5 ± 0.3
U
4
1/4-28UNF 75 ± 3 8.5 ± 0.3
V
-
-
-
-
W
-
-
-
-
Table 9: Nozzle Torque 10% - 0%
Orifice
Required Torque
ft-lbs
Nm
D, E & F
165
224
G
145
197
H
165
224
J
335
454
K
430
583
L
550
746
M
550
746
N
640
868
P
1020
1383
Q
1400
1898
R
1070
1451
T
1920
2603
U
1920
2603
V
1960
2657
W
2000
2712
Note: DO NOT USE impact wrench on “D” through “K”
orifice Nozzles.
Consolidated 2900 Series POSRV Maintenance Manual
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© 2018 Baker Hughes, a GE company. All Rights Reserved.
