Watts LFM115 2 Part of the LFM115 Series Basement Window Well This 1 1 4 inch lead This 1 1 4 inch lead free 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 Actuation No Assembled Dry Yes Balance Stop Plate No Ball Material 316 Stainless Steel Body Finish Brass Body Material Lead Free Copper Silicon Alloy Brass Brand Watts Buy American Act Compliant NO Class Rating Does Not Apply To Product Control Type Lever Handle CV Rating Does Not Apply To Product EAN 098268695847 Electrical Rating Does Not Apply To Product Inlet Connection Size 1 2 IN Inlet Connection Size Metric 15 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free YES Maximum Temperature Fahrenheit 400 Minimum Temperature Celsius 18 Features Globe pattern The quick closing action of the valve limits possible damaging high inlet pressure from passing through the valve to downstream piping