Watts 957Z-OSY-FS 4 - Part of the 957 Series roof-hatch-finder This extremely compact and lighter

This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation in accordance with the direction of the flow arrow

a power cord and a replaceable internal strainer screen

Stainless steel internal parts for longevity

This pressure relief valve has a 1 1/2 inch NPTF female inlet and outlet and a 50 psi pressure relief setpoint

Specifications Kit Type Check Rubber Parts Kit Lead Free YES Product Group BACKFLOW KITS UPC - 098268386004

Watts 957Z-OSY-FS 4 - Part of the 957 Series roof-hatch-finder This extremely compact and lighterThis 4 inch reduced pressure zone assembly backflow preventer help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. This extremely compact and lighter than a traditional designed assembly is approved for horizontal Z pattern installation as long as the backflow assembly is installed in accordance with the direction of the flow arrow. This assembly consists of a stainless steel body with a