Mooney Series 21 Regulator Instruction Manual | 1
Copyright 2021 Baker Hughes Company. All rights reserved.
Table Of Contents
Product Description ..................................................................................................................1
Materials of Construction .........................................................................................................2
Specifications ............................................................................................................................2-3
Regulator Markings ...................................................................................................................3
Nameplate Information ..............................................................................................................3
Installation ..................................................................................................................................4
Maintenance ...............................................................................................................................5
Scope
This manual provides installation, operation and maintenance
instructions for the Mooney Series 21 Regulator. The manual is
divided into the following sections:
Product Description
Baker Hughes’s Mooney Series 21 Regulator is a pressure control
regulator designed for use in both gas and liquid applications.
Series 21 -
Brass construction with 3 to 450 psi (0.20 bar - 31
bar) control pressure range.
Series 21H -
High pressure brass construction with a 200 to 900
psi (14 bar - 62 bar) control pressure range.
Series 21S -
Stainless steel construction with a 3 to 450 (0.20
bar - 31 bar) control pressure range.
Series 21HS -
High pressure, stainless steel construction with a
200 to 900 psi (14 bar - 62 bar) control pressure range.
The parts in all constructions are interchangeable. The high
pressure constructions (Series 21H and 21HS) differ from the
Series 21 and 21S with the addition of a diaphragm spacer
assembly that reduces the effective area of the diaphragm and
increases the spring range of the black and green springs.
General Description
(Refer to Figure 1)
Spring Housing (1):
The Regulator Spring Housing is provided
with a 1/4 inch NPT vent connection which may be piped to a
safe area or pressure loaded for remote control of the pressure
setting. The Spring Housing may also be pressurized for use in
differential pressure control or remote control applications. The
Main Spring may be changed by simply removing the Closing
Cap (1A).
Body Insert Assembly (2):
A removable Body Insert Assembly
(cartridge), at the bottom of the Regulator Body, contains the
inner valve mechanism. The cartridge may be replaced with a
spare unit for fast trouble shooting or repair. The Body Insert
Assembly is also field repairable.
Sensing and Outlet Ports (3):
The Series 21 Regulator has
combined SENSE and OUTLET connections.
Diaphragm Spacer Assembly (4):
The addition of this assembly
converts the Series 21 & 21S Regulator into the high pressure
Series 21H & 21HS. It reduces the regulator diaphragm area and
increases the spring range of the black and green springs.
