Baker Hughes Mooney 20 Series, Instruction Manual

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Mooney Series 20 Relief Valve Instruction Manual | 15
Copyright 2021 Baker Hughes Company. All rights reserved.
Pilot Markings
(Figure 12)
1
Location of the Pilot nameplate.
2
Location of spring range nameplate. The factory marks
the nameplate to indicate which spring is installed at
manufacture date. If the spring is changed, note the new
spring on the nameplate.
3
The month and year of manufacture is noted on the Spring
Case, Body, and Body Insert of the pilot.
1
2
3
Figure 12
Mooney
TM
Pilot
Series 20, 20H, 20S, 20HS
Control Pressure Spring Limit
Sense Pressure 1000 PSIG/70 BAR
Inlet & Outlet Pressure 1500 PSIG/100 BAR
Loading Pressure 1500 PSIG/100 BAR
Spring Case (Vent) Pressure 1000 PSIG/70 BAR
Bolt Torque - 8 ft-lbs Do not adjust spring above maximum specified range
Maximum Rating
U.S. Pat. No. 5056550
Baker Hughes
Figure 13
Nameplate for Series 20, 20H, 20S, & 20HS Mooney Pilots
Item Definition
Mooney Pilot Trademarked name of pilot.
Series Model number of pilot.
Control Pressure The control pressure is limited to the
spring range of the spring on the pilot
(Refer to Fig. 4 for Series 20 & 20S
pilots)
Sense Pressure Maximum allowable pressure in sense
Inlet & Outlet
Pressure
Maximum allowable pressure (psig) to
the Inlet and Outlet ports.
Loading Pressure Maximum allowable pressure (psig) to
the Loading port.
Spring Case
(Vent) Pressure
Maximum allowable pressure (psig) to
the Spring Case (Vent) port.
Bolt Torque Recommended bolt torque for spring
case in foot pounds.
Red, Plated, Blue,
Purple, Black and
Green
Each spring is color coded to indicate
the control pressure range
Adjusting Screw
Spacer
The black and green springs require a
spacer on the adjusting screw to avoid
over compression.
Table 9
Figure 14
Spring Range Nameplate for Series 20 & 20S Mooney Pilots
Figure 15
Spring Range Nameplate for Series 20H & 20HS Mooney Pilots
Maintenance
Pilot parts are subject to normal wear and must be inspected
and replaced as necessary. The frequency of inspection and
replacement of parts depends on severity of service conditions
and/or the requirements of local, state, and federal regulations.
Be certain that the name plates are updated to accurately indicate
any field changes in equipment, materials, service conditions, or
pressure settings.
WARNING: Before disassembly make sure the regulator and
pilot have been isolated from the process by closing block
valves on the inlet and outlet sides of the regulator. Safely
release pressure and process fluid from the regulator body
and pilot system. Failure to properly complete these steps
may result in personal injury and property damage.