Watts 757-OSY-FXG 4 - Part of the 757 Series ZC100F-4NH Watts model FH-1-M1-PEX 10

Watts model FH-1-M1-PEX 10

Bottom flanges have an anchoring lip for straight installation without floating

It consists of a lead free eco brass body construction

125 PSI at 353 degree F Maximum Pressure-BAR 27

Watts 757-OSY-FXG 4 - Part of the 757 Series ZC100F-4NH Watts model FH-1-M1-PEX 10This 4 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 line