Instruction manual

27
Integral Two-Stage regulators combine a First-Stage regulator and
a Second-Stage regulator into one compact unit. Recommended
for installations where piping distance is short, integral Two-Stage
regulators provide all of the advantages of Two-Stage regulation
(refer to page 23). Fisher
®
brand integral Two-Stage regulators
are color coded gray for easy identi cation. Vents are screened
with standard Second-Stage vent orientation over the outlet.
The Types R632A and R232A  rst-stage screened vent is threaded
to accept a 1/4-inch OD copper tube inverted fl are with a
7/16-24 UN thread. The Types R232A and R632A 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 R632A – is an Underwriters Laboratories (UL
®
) listed regulator
with a capacity of up to 950,000 BTU per hour / 10.7 SCMH,
recommended for on-site cylinder installations, mobile homes and
domestic installations, where separation of the First and Second-
Stage is not cost effective. This unit offers a POL inlet connection for
the easy drop-in replacement of Single-Stage regulators.
Type R632A’s high capacity relief valve and large 3/4-inch screened
vent limit downstream pressure to less than 2 psig / 0.14 bar in
an overpressure situation as required by NFPA 58. Type R632A is
adjustable from 9 to 13 inches w.c. / 22 to 32 mbar, with a factory
setpoint of 11 inches w.c. / 27 mbar. The Type R632A features
include the 20-year recommended replacement life.
Type R632A has 1/8-inch NPT built-in gauge taps ori ced to a
No. 54 drill size, on the upstream and downstream sides. These taps
provide easy access for testing the proper operation of the
First and Second-Stage while the system is pressurized. This
regulator also features a large 3/4-inch drip-lip vent to reduce the
chance of blockage by freezing rain or sleet when properly installed
with the vent pointing down.
Type R232A – Designed for installations with small capacity loads
up to 550,000 BTU per hour / 6.2 SCMH. With an overall length
of 6.5 or 7 inches / 165 or 178 mm for NPT or FPOL connections
respectively, this compact unit  ts easily into con ned spaces
and is ideal for ASME tanks used on small domestic loads.
Intermediate and outlet gauge taps facilitate easy system testing.
A 3/8-inch NPT vent allows easy installation of vent piping. Use
of a valve stem and lever provide stable regulation and excellent
durability. A large fabric-reinforced diaphragm provides accurate
regulation. The large ori ce assists in minimizing freeze problems.
Stainless steel internal and corrosion resistant coatings provide
excellent corrosion resistance. The Type R232A also has the design
that provides a recommended replacement life of 20 years.
Twin Cylinder Installations – The Type R232A can also be used
on twin cylinder hook-ups found on travel trailers and stationary
applications. These units offer a drip-lip vent style for installations
without a vent protector. Proper installation requires the vent to be
pointed down in a vertical position. Additional protection may be
required if road splatter is a problem.
integral two-stage regulators
Integral Two-Stage Regulators
TYPE NUMBER
CAPACITIES (PROPANE)
(1)
INLET
CONNECTION,
INCH
OUTLET
CONNECTION,
INCH
OUTLET
ADJUSTMENT RANGE
OUTLET
PRESSURE SETTING
BTU / hour SCMH Inch w.c. mbar Inch w.c. mbar
R232A-BBF
550,000 6.2
1/4 FNPT
1/2 FNPT 9.5 to 13 24 to 32
11 27
R232A-BBFXA
(2)
R232A-HBF
FPOL
R232A-HBFXA
(2)
R632A-BCF
850,000 9.6
1/4 FNPT
1/2 FNPT
9 to 13 22 to 32
R632A-BCFXA
(2)
R632A-CFF
950,000 10.7 3/4 FNPT
R632A-CFFXA
(2)
R632A-HCF
850,000 9.6
FPOL
1/2 FNPT
R632A-HCFXA
(2)
R632A-JFF
850,000 9.6 3/4 FNPT
R632A-JFFXA
(2)
1. Based on 30 psig / 2.1 bar inlet pressure and 2 inches w.c. / 5 mbar droop.
2. First and Second-Stage spring case vents opposite gauge taps.
TYPE R232A
TYPE R632A
TYPE R632A