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R122H, R222H, R222, R232A and R232E Series
LP-Gas Regulators
2
Specications
Specications and Tables 1 and 2 list the specications for these regulators. Contact the factory if the regulator is to be
used on any service other than LP-Gas, natural gas or air. The following information is located on the spring case: type
number, orice size, spring range and date of manufacture.
Description
Second Stage Low Pressure Regulator
The Type R222 second stage regulator provides low
pressure, inches of water column, delivery pressure. It
is set at 11 in. w.c. / 27 mbar pressure and comes with
a high capacity internal relief valve. The regulators are
painted PALM GREEN.
Integral Two-stage Regulator
The Type R232A integral two-stage regulator contains
a non-adjustable rst stage regulator on the inlet. The
second stage provides 11 in. w.c. / 27 mbar outlet
pressure. The second
stage portion has a high capacity
internal relief valve construction. The rst stage does not
have an internal relief valve. The regulators are painted
GRAY with a BLACK CAP.
Integral Two psig Service Regulator
The Type R232E integral two psig service regulator
contains a non-adjustable rst stage regulator on the
inlet. The second stage provides 2 psig / 0.14 bar outlet
pressure. The second stage portion has a high capacity
internal relief valve construction. The rst stage does not
have an internal relief valve. The regulators are painted
GRAY with a WHITE CAP.
First Stage Regulators
Types R122H and R222H regulators are designed for
high pressure (pounds per square inch) vapor service.
These regulators have high capacity internal relief valves.
When used on rst stage service, the Type R122H regulator
reduces container pressure to approximately 10 psig /
0.69 bar inlet pressure to a second stage regulator. The
Type R222H regulator reduces container pressure to
1. In the event the R222 Series malfunctions during a Maximum Emergency Inlet Pressure condition these inlet pressures and the R222 Series relief performance will limit downstream
pressure to 2 psi / 0.14 bar or less.
2. Product has passed Fisher testing for lockup, relief start-to-discharge and reseal down to -40ºF / -40ºC.
Pressure Taps Size Restriction
1/8 NPT: #54 / 0.055 in. Drill on outlet and inlet
Orice Sizes
R122H Series: 0.15 in. / 3.8 mm
R222 Series: 0.14 in. / 3.6 mm
R232A, R232E and R222H Series: 0.193 in. / 4.9 mm
Wide Open C
g
for Relief Sizing
R122H Series: 23
R222 Series: 18
R232A and R232E Series: 19
R222H Series: 37
Maximum Allowable Inlet Pressure
R122H, R222H, R232A and R232E Series:
250 psig / 17.2 bar
R222 Series: 10 psi / 0.69 bar
Maximum Emergency Inlet Pressure
R122H, R222H, R232A and R232E Series:
250 psig / 17.2 bar
R222 Series
(1)
: 75 psi / 5.2 bar when used with a
Fisher
®
Types R122H, R222H or R622H rst stage
regulator. 40 psi / 2.8 bar when used with any other
rst stage regulator.
Temperature Capabilities
R122H, R222H, R222, R232A and R232E Series:
-20 to 160°F / -29 to 71°C
(2)
Pressure Registration
Internal
Outlet Pressure Standard Setpoint
R222H Series: 10 psi / 0.69 bar or 5 psi / 0.35 bar
R122H Series: 10 psi / 0.69 bar
R222 Series: Second Stage: 11 in. w.c. / 27 mbar
R232A Series: First Stage: approximately 9 psig /
0.62 bar at 100 psig / 6.9 bar, 50 SCFH / 1.42 Nm
3
/h
Second Stage: 11 in. w.c. / 27 mbar
R232E Series: First Stage: 9 psig / 0.62 bar at
100 psig / 6.9 bar, 50 SCFH / 1.42 Nm
3
/h
Second Stage: 2 psig / 0.14 bar
Outlet Pressure Spring Ranges
R222H Series: 8 to 11.9 psig / 0.55 to 0.82 bar or
4 to 6 psig / 0.28 to 0.41 bar
R122H Series: 10 psig / 0.69 bar +/- 1 psig / 0.07 bar
(non-adjustable)
R222 Series: Second Stage: 9.5 to 13 in. w.c. /
24 to 32 mbar
R232A Series: First
Stage: non-adjustable
Second
Stage: 10.2 to 13 in. w.c. / 25 to 32 mbar
R232E Series: First Stage: non-adjustable
Second Stage: 1 to 2.2 psig / 0.07 to 0.15 bar
Approximate Weights
R222H Series with POL: 2.12 lbs / 961.8 g
R222H Series with NPT tting: 1.73 lbs / 784.8 g
R122H Series: 1.2 lbs / 544 g
R222 Series: 1.4 lbs / 635 g
R232A and R232E Series with POL:
1.9 lbs / 865 g
R232A and R232E Series with NPT tting:
1.5 lbs / 671 g
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