Watts LFM115 GRV E 2 30 LS 2 1 2 Part of the LFM115 Series ZA100F 2NH This 1 1 4 inch boiler This 1 1 4 inch boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment Specifications Body Material Lead Free Copper Silicon Alloy Brand Watts EAN 098268574586 Inlet Connection Size 3 4 IN Inlet Connection Type Female Threaded Inlet Thread Type NPTF Lead Free YES Maximum Working Pressure PSI 56 Outlet Connection Size 3 4 IN Outlet Connection Type Female Threaded Outlet Thread Type NPTF Part Number F121470 Pressure Range Does Not Apply To Product Pressure Relief Setting PSI 75 Series LF174A Specification Sheet Flood Sensor for Relief Valve Discharge Line Globe body pattern with grooved end connections The quick closing action of the valve limits the possibility of damaging high inlet pressure from passing through the valve to downstream piping