Watts 0121401|WW0121401 - 1/2 LFBP30 75-175

This 1/2 inch bypass control relief valve is used in commercial, residential and industrial applications to regulate liquid pressure as supplied by a positive pressure pump. It is a diaphragm-operated type valve that protects equipment by opening at an adjustable range of 75 to 175 psi (5.2 to 12.1 bar) to allow excess volume to be bypassed back to the source. It consists of a lead free alloy body with NPT threaded male inlet and NPT threaded female outlet, sensitive rubber diaphragm, Buna-N disc, tee handle, a spring, and adjustment handle separated from liquid elements.