Instruction manual

26
Types R622E and R652E, Two-psi Service Regulators, are designed
for Two-psi LP-Gas Regulator Systems and listed by Underwriters
Laboratories (UL
®
). These units are installed downstream from
a First-Stage regulator and reduce an inlet pressure of 10 psig /
0.69 bar to a nominal 2 psig / 0.14 bar outlet pressure. Two-psi
Service Regulators are designed for domestic applications that
supply 2 psig / 0.14 bar LP-Gas to a line regulator located inside the
building. In most cases a manifold is used with corrugated stainless
steel tubing (CSST) as well as other acceptable piping materials
for routing to the line pressure regulator supplying approximately
11 inches w.c. / 27 mbar to appliance regulators.
Types R622E and R652E Two-psi Service Regulators feature a
combination relief valve and large vent that provide overpressure
protection and exceed UL requirements. Both units have a stainless
steel inlet screen to reduce the amount of debris from entering them.
Fisher
®
brand Types R622E and R652E are painted green with a
white closing cap for easy identi cation and have a temperature rating
of -20 to 160°F / -29 to 71°C, but have passed Fisher internal testing
for lockup, relief start-to-discharge and reseal down to -40°F / -40°C.
Type R622E – Time proven design constructed of corrosion
resistant materials, the Type R622E is designed to provide a
recommended replacement life of 20 years. Fisher brand’s fabric-
reinforced diaphragm and large diaphragm area provide accurate
regulation at increased capacities. All components provide superior
resistance to  eld conditions that may cause wear and corrosion.
Built-in 1/8-inch taps (ori ced to a number 54-drill size) on the
upstream and downstream sides allow for easy gas system checks.
Type R652E – Provides the same features as the Type R622E,
includes a 20-year recommended replacement life with a back
mount design.
two-psi regulators
Two-psi Service Regulators
TYPE NUMBER
CAPACITIES (PROPANE)
(1)
CONNECTIONS
INLET X OUTLET, INCH
OUTLET
PRESSURE RANGE
OUTLET
PRESSURE SETTING
BTU / hour SCMH psig bar psig bar
R622E-BCH 1,460,000 16.4 1/2 x 1/2 FNPT
1 to 2.2
69 mbar to
0.15
2 0.14R622E-DCH 1,680,000 18.9
3/4 x 3/4 FNPT
R652E-DFH 1,500,000 16.9
1. Based on 10 psig / 0.69 bar inlet pressure and 20% droop.
Typical Two-psi Installation
TYPE R122H OR R622H
TYPE R622E OR R652E
10 psig / 0.69 bar
2 psig / 0.14 bar
TYPE R652E TYPE R622E