Apollo Valves 3/4" FNPT x 3/4" FNPT RVW10 697,000 BTU Hot Water Relief Valve, 50 PSIG (Brass Finish)

These capacity-certified relief valves protect against excessive water pressure (from thermal expansion) and steam generated when Btu input controls fail. Valves comply with ASME Section IV requirements. Ideal for use with hot water boilers and heating systems. Features: Pressures from 20 to 150 psig Brass or bronze body available with optional satin or polished chrome finish Maximum temperature service: 250°F 10-321 in polished chrome only Stainless steel springs