Watts 957-NRS-FS 3 - Part of the 957 Series ZA100F-2NH This 4 inch lead free

This 4 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure

Z415-BZ1-DP-2NL

UPC - 098268640519

it offers both performance and visual subtlety—making the drain virtually disappear into the floor design

For 6 inch steam/water pressure regulator

Watts 957-NRS-FS 3 - Part of the 957 Series ZA100F-2NH This 4 inch lead freeThis 3 inch 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. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation in accordance with the direction of the flow arrow. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check