Watts 774-DNRS 8 - Part of the 774 Series Strata Systems stainless steel springs

stainless steel springs

add Micro Channel Cleanouts along the length of the drain

one cover O-ring

hose thread connection for purging

For projects requiring added protection

Watts 774-DNRS 8 - Part of the 774 Series Strata Systems stainless steel springsThis 8 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of 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 under continuous pressure service and protection at cross connections identified as non health hazards and from other non