53L WATTS 1/2" POPPET STYLE RELIEF VALVE FOR TANKLESS WATER HEATERS AND STORAGE TANKS 150 PSI

Series 53L Pressure Relief Valves are used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. They have a bronze body construction with NPTF threaded male inlet and NPTF threaded female (drain) outlet connections, stainless steel spring, and test lever. ANSI Z21.22 approved, design certified and listed by CSA. Pressure Range: 75 to 175 psi (5.2 to 12.1 bar). Standard Pressure Setting: 75 psi (516.7 kPa). Optional Settings: 100, 125, and 150 psi (6.9, 8.6, and 10.3 bar); also available at 50 psi (3.45 bar) setting.