Watts 957Z-OSY-FS 4 - Part of the 957 Series roof-hatch-finder UPC - 098268639995

UPC - 098268639995

UPC - 098268177602

UPC - 098268303179

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

so as not to hurt the soil hydrology

Watts 957Z-OSY-FS 4 - Part of the 957 Series roof-hatch-finder UPC - 098268639995This 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