Apollo Valves 3/4" MNPT x 3/4" FNPT RVW10 587,000 BTU Bronze Relief Valve (40 psi)

ASME Section IV capacity certified bronze safety relief valve for protection of hot water heating boilers, systems and similar equipment. It can be Pre-set to any pressure ranging between 20 to 80 psig (1.4 to 5.5 bar) at 250°F (121°C) max.