Watts 957-OSY-GXG-FS 4 - Part of the 957 Series Z100F-8NH and finishes to suit diverse

and finishes to suit diverse project needs

Double-Dipped Galvanization: Enhanced durability through a double-dipping process

cover O-ring and sensing passage O-ring

Low-flow bypass range 25-75 psi

A 4 inch no hub outlet allows for quick and easy for installation

Watts 957-OSY-GXG-FS 4 - Part of the 957 Series Z100F-8NH and finishes to suit diverseThis 4 IN lead free stainless steel reduced pressure zone assembly backflow preventer help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. It has OSY groove by groove gate valves that show if the valve is open or closed and prevent stem corrosion. The easy maintenance assembly consists of positive seated torsion spring check modules, bottom mounted differential pressure relief valve, FM UL