Watts 957NRPDA-OSY-GPM-FS 4 - Part of the 957RPDA Series dura-skrim-selector 957RPDA Compatible Size Used On

957RPDA Compatible Size Used On 2 1/2 IN to 4 IN Kit Contents Closure Sleeve

ZM415SC-4IP

Z400M-3NH-VX

UPC - 098268350234

ZB400N-3IC

Watts 957NRPDA-OSY-GPM-FS 4 - Part of the 957RPDA Series dura-skrim-selector 957RPDA Compatible Size Used OnThis 4 inch reduced pressure detector backflow preventer assembly help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. Extremely compact and lighter than traditional designs it is approved for horizontal N pattern installation. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check valves, resilient seated gate valves with outside stem and yoke,