Brochure
© 2015, Maxitrol Company. All Rights Reserved.
DRAFT 09.18.2013
10
Maxitrol’s original straight-thru-ow (STF) design regulators
are non-lockup type regulators for high capacities at low inlet
pressures. The difference between STF design and other type
regulators is the conical valve. The cone principal permits gas to
ow straight through the regulator without changing directions.
Frictional ow resistance is reduced, resulting in greater
capacity. An improved ow pattern provides accurate, sensitive
regulation at extremely low pressure differentials. Typical
applications include residential, commercial, and industrial
gas-red appliances and equipment used on low or medium
pressure gas supplies.
Pipe Sizes .................................1/2” to 3” threaded connections with NPT or ISO7-1 threads. 4” 150lb. ange (RV131 only).
Housing Material .....................RV52, RV53, RV61, RV81, RV91, RV111: aluminum; RV131: cast iron.
Mounting .................................RV52, RV53, RV61 are suitable for multi-positional mounting. If ball check vent limiting
device is installed, mount in an upright position only. RV81, RV91, RV111, RV131, upright
position only.
NOTE: All Maxitrol gas pressure regulators should be installed and operated in accordance
with Maxitrol Safety Warning Instructions (see GPR_MI_EN.ES or GPR_CSA_MI_EN.FR).
Certications ...........................RV52, RV53, RV61, RV81, RV91, RV111: ANSI Z21.18/CSA6.3 Gas Appliance Pressure
Regulators.
Gas Types .................................Suitable for natural, manufactured, mixed gases, liqueed petroleum gases, and LP gas-air
mixtures.
Maximum Inlet Pressure ..........CSA Certied: RV52, RV53, RV61, RV81, RV91, RV111: 1/2 psi (3.4 kPa)
Maxitrol Tested*: RV52, RV53: 1/2 psi (3.4 kPa)
RV61, RV81, RV91, RV111: 1 psi (6.9 kPa)
RV131: 2 psi (13.8 kPa)
*Do not use if inlet pressure is more than 10 times desired outlet pressure.
Emergency Exposure Limits ......RV52, RV53: 3 psi (21 kPa)
RV61, RV81, RV91, RV111: 5 psi (34 kPa)
RV131: 15 psi (103 kPa)
Gas Containment Limits ........... RV52, RV53: 15 psi (103 kPa)
RV61, RV81, RV91, RV111, RV131: 25 psi (172 kPa)
NOTE: Internal damage may occur when exposed to these pressures.
Ambient Temperature Ranges ...RV52, RV53, RV61, RV81, RV91, RV111: -40° to 205°F (-40° to 96°C)
RV131: -40° to 125°F (-40° to 52°C)
Minimum Regulation ................RV52, RV53: 20 CFH; RV61: 25 CFH; RV81, RV91: 50 CFH; RV111, RV131: 250 CFH.
Expressed in CFH @ 0.64 sp gr gas.
RV SERIES
Straight-Thru-Flow Design
RV81
Specications