Watts 757DCDA-DOSY-CFM 4 - Part of the 757DCDA Series ZC100F-8NH This 1 1/2 inch lead

This 1 1/2 inch lead free two-piece

The guard surrounds the drain assembly to help maintain consistent drainage performance in demanding rooftop environments

0 Outlet Connection Size 1/2 IN Outlet Connection Type Female Threaded Outlet Thread Type FPT Part Number 0548002 Port Type Full Seat Material Reinforced PTFE Series C-FBV-1 Stem Packing Material PTFE Stem Shaft Material 304 Stainless Steel Stem Type Bottom Loaded Blowout Proof Thrust Washer Material PTFE Valve Style 2-piece WOG Rating 1000 PSI Specification Sheet - C-FBV-1

The standard outlet is no-hub (MJ)

Stainless steel cover

Watts 757DCDA-DOSY-CFM 4 - Part of the 757DCDA Series ZC100F-8NH This 1 1/2 inch leadThis 4 inch double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality, but not toxic, from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross connections identified as non health hazards such as on fire