Watts 0915229|WW0915229 - 1/2 111-055

This 1/2 inch pressure relief valve is designed for residential hot water supply applications and provides pressure relief protection only against thermal expansion in water. This valve consists of a bronze body with 1/2 inch NPT threaded male inlet and 1/2 inch NPT threaded female (drain) outlet, and stainless steel pressure spring. The pressure relief is set at 55 psi (3.79 bar).