Watts 757-OSY-GXG 2 1/2 - Part of the 757 Series ZC100F-2NH It is an ASME Section

It is an ASME Section VIII fixed bladder type precharged expansion tank

Specifications Blowdown Outlet Connection Female Threaded Blowdown Outlet Size 3/8 IN Body Material Cast Stainless Steel Body Pattern Wye Brand Watts Buy American Act Compliant NO Class Rating 300 EAN 098268881127 Epoxy Coating Type None Gasket Material PTFE Inlet Connection Size 3/4 IN Inlet Connection Size-Metric 20 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free YES Outlet Connection Size 3/4 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0823074 Retainer Cover Material Stainless Steel Retainer Cover Type Tapped with Closure Plug Screen Material Stainless Steel Screen Size ONE_THIRTY_SECOND Series 87SI Strainer Type Wye WOG Rating 720 PSI Specification Sheet - 87SI

Features Complies with state codes and standards requiring reduced lead content

The iron frame is painted black to inhibit rust and will form a protective iron-oxide patina over time

Watts 757-OSY-GXG 2 1/2 - Part of the 757 Series ZC100F-2NH It is an ASME SectionThis 2 1 2 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of 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. It is ideal for protection at cross connections identified as non health hazards and from other contaminants found at the service