Watts LF008PCQT 1 Part of the LF008PCQT Series Pipe Connection Fitting Combination Membrane Flashing Clamp & Combination Membrane Flashing Clamp & Gravel Guard: Secures the roof membrane for waterproofing and blocks debris or aggregate to protect flow and prevent clogging 00 Minimum Temperature Fahrenheit 0 Operating Torque Does Not Apply To Product Outlet Connection Size 1 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0123464 Port Type Full Seat Material Virgin PTFE Series LFFBV 3C SS Stem Packing Material Virgin PTFE Stem Shaft Material 316 Stainless Steel Stem Type Bottom Loaded Blowout Proof Thrust Washer Material Virgin PTFE Valve Style 2 piece WOG Rating 600 PSI Specification Sheet LFFBV 3C SS and a molded diaphragm separating the air inlet from the potable water supply to prevent spillage vacuum breaker backflow preventer prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage on indoor point of use applications