Watts 757-NRS 3 - Part of the 757 Series Sheet Drain Epoxy-coated cast iron body for

Epoxy-coated cast iron body for long-term durability

Z530-4NH-TS

ZA104-20-2IC

and membrane security are essential

Watts 757-NRS 3 - Part of the 757 Series Sheet Drain Epoxy-coated cast iron body forThis 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