Watts 957-NRS-FS 4 - Part of the 957 Series Window Well Extension It features a check module

It features a check module O-ring

This 1/8 inch lead free small water pressure regulator is used in small general purpose applications to regulate water pressure in piping systems using water and No

series 957RPDA

Specifications Buy American Act Compliant YES Compatible Series or Model 757

Watts 957-NRS-FS 4 - Part of the 957 Series Window Well Extension It features a check moduleThis 4 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