Watts 757-NRS 3 - Part of the 757 Series Z100F-4NH it provides efficient drainage while

it provides efficient drainage while maintaining a discreet

bottom loaded blowout proof stem

With gauge tapping

integral stainless steel strainer with a thermal expansion bypass and double union threaded end connections

and long-term environmental exposure

Watts 757-NRS 3 - Part of the 757 Series Z100F-4NH it provides efficient drainage whileThis 3 inch stainless steel double check valve backflow preventer assembly is designed to prevent the reverse flow of objectionable but not toxic water 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 hazards and from other contaminants found at the