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757, 757N

Double Check Valve Assemblies, Stainless Steel

Lead Free* Models Available


2 1/2 to 10 in. (65 to 250mm)


Series 757, 757N Double Check Valve Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70% lighter than traditional designs. Series 757, 757N is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum Working Pressure: 175psi (12.06 bar).

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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