Watts 757DCDA BFG GPM 6 Part of the 757DCDA Series Inserta Tee This 1 1 4 inch lead This 1 1 4 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non potable quality 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 Specifications Blowdown Outlet Connection Female Threaded Blowdown Outlet Size 3 8 IN Body Material Cast Iron Body Pattern Wye Brand Watts Class Rating 126 EAN 098268832952 Epoxy Coating Type None Gasket Material Garlock Inlet Connection Size 1 2 IN Inlet Connection Size Metric 15 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free YES Outlet Connection Size 1 2 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0220310 Plug Material Cast Iron Retainer Cover Material Cast Iron Retainer Cover Type Tapped with Closure Plug Screen Material Stainless Steel Screen Size 80 MESH Series 77S Strainer Type Wye WOG Rating 400 PSI Specification Sheet 77S M1 UPC 098268121841 and four test cocks