Watts LFB6400 4 Part of the LFB6400 Series detectable warning mat finder Heavy Duty Cast Iron Body: Provides Heavy Duty Cast Iron Body: Provides structural strength and long term durability This 3 8 inch lead free Maxi Flo check valve is used in general industrial and plumbing applications to prevent the effects of water hammer in the piping system Specifications Actuation No Assembled Dry Yes Balance Stop Plate No Ball Material 316 Stainless Steel Body Finish Bronze Body Material Lead Free Copper Silicon Alloy Brand Watts Control Type Lever Handle CV Rating 450 GPM EAN 098268673609 Inlet Connection Size 4 IN Inlet Connection Size Metric 100 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free YES Maximum Temperature Fahrenheit 450 Minimum Temperature Celsius 49 Blowout proof pressure retaining stem