The Maxitrol RV61-1 1/4 is a non-lockup gas regulator, ideally for applications requiring high capacities at low inlet pressure.  The straight-through regulator has a 1 1/4” x 1 1/4” threaded pipe connection and a 1/8” Npt vent connection.


Swing Radius: 4.8” (122 mm)
Housing Material: Aluminum
Mounting:  suitable for multi-positional mounting. If ball check vent limiting device is installed, mount in an upright position only.
Gas Types: .Suitable for natural, manufactured, mixed gases, liquefied petroleum gases, and LP gas-air mixtures.
Maximum Inlet Pressure: 
CSA Certified: 1/2 psi (3.4 kPa)
Maxitrol Tested: 1 psi (6.9 kPa)
Emergency Exposure Limits: 5 psi (34 kPa)
Gas Containment Limits: 25psi (172 kPa)
Ambient Temperature Range: -40° to 205°F (-40° to 96°C)
Minimum Regulation: 25 CFH @ 0.64 sp gr gas.
Capacity CSA Max: 900 (24.5) CFH (m3 /h) @ 0.64 sp gr gas

Maxitrol’s original straight-thru-flow (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 flow straight through the regulator without changing directions. Frictional flow resistance is reduced, resulting in greater capacity. An improved flow pattern provides accurate, sensitive regulation at extremely low pressure differentials. Typical applications include residential, commercial, and industrial gas-fired appliances and equipment used on low or medium pressure gas supplies.