Watts 957N-DOSY 4 - Part of the 957 Series Inserta Tee This kit consists of disc

This kit consists of disc assembly

Low pressure range 10 to 35 psi (5

Threaded connection

with initial pressure up to 200 psi and adjusting spring for reduced pressure range of 10 to 50 psi (0

pipe connector (70154

Watts 957N-DOSY 4 - Part of the 957 Series Inserta Tee This kit consists of discThis 4 inch N pattern reduced pressure zone assembly backflow preventer helps prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation