Kunkle Valve 0537-H01-HM0075 Valve 321702-401 and RF-series models

and RF-series models

reduce wiring complexity

Weatherproof Durability: The NEMA 4 / Type 4 enclosure protects internal components from water ingress and harsh environmental conditions

Common Questions What is the primary function of the BM-7286 in a Hydrotherm system

Lead-Free Certified: Fully compliant with potable water regulations for backflow prevention

Kunkle Valve 0537-H01-HM0075 Valve 321702-401 and RF-series modelsThe Kunkle Valve 0537 H01 HM0075 is a high capacity ASME Section IV pressure relief valve designed specifically for hot water boilers, heat exchangers, and generators. Featuring a 2" Female NPT inlet and a 2 1 2" Female NPT outlet, this Model 537 valve is factory set at 75 PSI to handle demanding thermal expansion and over firing conditions. With a rated capacity of 11,960 lb h (PPH) or 11,959,631 BTU h, it provides critical overpressure protection by