Pilot/Main Valve Assembly Testing; 49Pv07/37; 49Mv07, 49Mv22 And 49Mv72 - Baker Hughes Consolidated 4900 Series Instruction Manual

XIX. Setting and Testing (Cont.)
D. Pilot/Main Valve Assembly Testing
D.1 49PV07/37
1. Insert O-Rings in the inlet sensing port, dome
port, and vent port ring grooves of the pilot base.
2. Insert the Inlet Shuttle Seat into the inlet bore of
the pilot. The counterbore should be facing out.
3. Insert the Inlet Shuttle Guide into the inlet port
with the flanged end outward.
4. Align the inlet port, dome port, and vent port in
the Coverplate. Care must be taken to insure
that the Shuttle Guide and O-Rings stay in
place.
5. Bolt the pilot to main valve using four Socket
Head Cap Screws. Torque to 40±5 ft-lbs
(54.2±6.8 N-m).
6. Final standard configuration for a 49PV07 or
49PV37 without any options is shown in Figure
32.
Figure 32: 49PV07/37
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Baker Hughes
D.2 49MV07, 49MV22 and 49MV72
1. Insert O-Rings in the inlet sensing port, dome
port, and vent port ring grooves of the Pilot
Base.
2. Place an O-Ring in the O-Ring shoulder of the
small end of the inlet spool.
3. Insert the inlet spool into the inlet port with the
flanged end outward.
4. Align the inlet port, dome port, and vent port
of the pilot with the matching ports in the
Coverplate. Care must be taken to insure that
the shuttle guide and O-Rings stay in place.
5. Bolt the pilot to main valve using four Socket
Head Cap Screws. Torque to 40±5 ft-lbs
(54.2±6.8 N-m).
6. Final standard configuration for the modulation
pilot valves without any options is shown in
Figures 33 through 34.
Figure 33: 49MV07
Figure 34a: 49MV22
Figure 34: 49MV22/72
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Figure 34b: 49MV72