Instruction manual

25
Types R222, R622, R642, R652 and HSRL Second-Stage
regulators are Underwriters Laboratories (UL
®
) listed regulators
designed to reduce the outlet pressure from a First-Stage regulator,
usually 10 psig / 0.69 bar to 11 inches w.c. / 27 mbar, in domestic
installations. Vents are screened with standard orientation over the
inlet, but other orientations are available. Fisher
®
brand Second-
Stage regulators are painted palm green for easy identi cation.
Types R222, R622, R642 and R652 are equipped with a stainless
steel inlet screen to reduce the amount of debris entering the
regulator 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 R222 is designed for small domestic applications up to
650,000 BTU per hour / 7.3 SCMH. The unit provides the same
features as the Type R622 in a smaller package and its design
provides a recommended replacement life of 20 years.
Type R622 is designed for Two-Stage domestic applications up
to 1,400,000 BTU per hour / 15.8 SCMH. The Type R622’s
time proven design and corrosion resistant materials, provide a
recommended replacement life of 20 years.
Type R622 contains a high performance relief valve and a large
3/4-inch screened vent to limit downstream pressure to less than
2 psig / 0.14 bar in an overpressure situation as required by NFPA 58.
The relief valve design exceeds the industry standard by limiting the
downstream pressure to 2 psig / 0.14 bar even in a double failure
situation when used with a Type R622H or R122H First-Stage
regulator. The Type R622 is adjustable from 9 to 20 inches w.c. /
22 to 50 mbar.
For easy system checks, the Type R622 has 1/8-inch NPT built-in
gauge taps ori ced to a No. 54 drill size, on both the upstream and
downstream sides. This regulator also features a large 3/4-inch drip-
lip vent design.
Types R642 and R652 are designed for domestic applications
up to 920,000 / 10.4 and 1,000,000 BTU per hour / 11.3 SCMH,
respectively. These units provide all the same features as the
Type R622, including the 20-year recommended replacement life and
double failure protection, in an angle body for the Type R642 and
backmounted design for the Type R652.
Type HSRL is an UL listed regulator designed for light commercial
applications up to 2,600,000 BTU per hour / 29.3 SCMH. It utilizes
a high strength cast iron body and a 3/4-inch NPT drip lip vent
design. The PFC and SFC feature an angle-body design. The
design also includes a high capacity internal relief valve and a
20-year recommended replacement life.
seCond-stage regulators
Second-Stage Regulators
TYPE NUMBER
CAPACITIES (PROPANE)
(1)
INLET
CONNECTION,
INCH
OUTLET
CONNECTION,
INCH
OUTLET
PRESSURE RANGE
OUTLET
PRESSURE SETTING
BTU / hour SCMH Inch w.c. mbar Inch w.c. mbar
R222-BAF 650,000 7.3 1/2 FNPT 1/2 FNPT 9.5 to 13 24 to 32
11 / 27
R622-BCF 875,000 9.8 1/2 FNPT 1/2 FNPT
9 to 13 22 to 32
R622-CFF
1,400,000 15.8
1/2 FNPT
3/4 FNPT
R622-DFF
3/4 FNPT
R642-DFF 920,000 10.4
R652-CFF
1,000,000 11.3
1/2 FNPT
R652-DFF 3/4 FNPT
R622-CFGXA 1,125,000 12.7 1/2 FNPT 3/4 FNPT 13 to 20 32 to 50 18 / 45
HSRL-BFC
2,300,000 25.9 3/4 FNPT 3/4 FNPT
9 to 13 22 to 32 11 / 27
HSRL-PFC
HSRL-CFC
2,600,000 29.3 1 FNPT 1 FNPT
HSRL-SFC
1. Based on 10 psig / 0.69 bar inlet pressure and 2 inches w.c. / 5 mbar droop.
TYPE R222
TYPE R622
TYPE R642
TYPE R652
TYPE HSRL
TYPE R222