Marketing InformationASME Section IV Capacity Certified Bronze Safety Relief Valves protect ASME Section IV hot water heating boilers and hydronic heating systems. High capacity design features corrosion resistant construction. Brass, satin or polished chrome finishes available. Proudly made in the USA.ASME Section IV Certified Capacity (20-60psi only) 15-60 psig (1.4 - 4.1 bar) Set Pressure at 250 degreeF (121 degreeC) maxRegistered in all Canadian Provinces and Territories, CRN lb0G8547.5C Stainless Steel Springs StandardMale NPT inletEPDM or Silicone Seat Options