Watts 957Z-NRS-FS 4 - Part of the 957 Series Sheet Drain This 3 inch ductile iron

This 3 inch ductile iron valve setter with flange by flange connections is designed to augment the installation of the N-shape 957N BFG and 957N RPDA BFG backflow preventer assemblies only

UPC - 098268638011

it effectively blocks sediment

Z530-4NH-C

It has an atmospheric port that provides visual indication of failure of the second check and a Wye pattern strainer

Watts 957Z-NRS-FS 4 - Part of the 957 Series Sheet Drain This 3 inch ductile ironThis 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