53L-100 1/2 ½ 75 psi pressure relief valve, Watts

The Watts 1/2" pressure relief valve is used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. It consists of a bronze body construction with 1/2" NPT threaded male inlet and 1/2" NPT threaded female (drain) outlet connections, test lever and stainless steel spring. It is ANSI Z21.22 approved, listed and certified by CSA. The pressure relief is set at 100 psi (6.9 bar).