Maxitrol RV81-1 1/4 Regulator R-410A or at a 90-degree angle—making

or at a 90-degree angle—making it a versatile HVAC replacement gas valve for tight mechanical rooms

This kit is designed with standardized keying

Attempting to lubricate these units can degrade the internal seals or cause the rubber housing to swell and fail prematurely

making it a standard choice for condenser fan cycling control and high-pressure system protection

Direct OEM compatibility ensures seamless installation in Berko 3900 series units without field modifications

Maxitrol RV81-1 1/4 Regulator R-410A or at a 90-degree angle—makingThe Maxitrol RV81 1 1 4 is a specialized appliance gas regulator engineered for high capacity applications requiring precise pressure control at low inlet levels. Utilizing Maxitrols signature Straight Thru Flow (STF) design, this 1 1 4" NPT unit employs a unique conical valve that allows fuel to pass through without directional changes. This profile significantly reduces frictional resistance, enabling a massive 4,500,000 BTU hr capacity while