Mcdonnell & Miller 250-2-30, Relief Valve 2" NPT, 30 psi (2.1 kg/cm2)

For tanks and hydronic heating systems Specifications Protects against over pressure Minimizes hammering with flash steam Low differential pressure - 3 psi (.21 kg/cm2) between opening and closing Meets ASME Pressure Vessel and Boiler Code, Section IV Sizes and material: 3/4" - 1" NPT - bronze body and seat 2" NPT - cast iron body, brass seat EPDM rubber diaphragm and seat disc Maximum temperature 250 Deg. F (121 Deg. C) Maximum operating pressure range 30 - 125 psig (2.1 - 8.8 kg/cm2)