Watts 774-LF 6 - Part of the 774 Series roof-hatch-finder female NPT union inlet by

female NPT union inlet by female NPT outlet connection

NPT threaded female inlet and outlet connections

and 1 1/4 inch NPT female thread union inlet by 1 1/4 inch NPT female thread outlet

UPC - 098268094640

stainless steel disc

Watts 774-LF 6 - Part of the 774 Series roof-hatch-finder female NPT union inlet byThis 6 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 in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross connections identified as non health hazard applications and from other contaminants