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Backflow Prevention



Brass Dual Check Valves



3/4 in. (20mm)


Series 7B Dual Check Valves prevent the reverse flow of polluted water from entering the potable water supply at the service entrance or at individual outlets. It consists of a compact brass body construction, two independently operating check valves, and is available with a female union inlet x female union outlet and NPT threaded connections. Series 7B is designed for non-health hazard residential water system containment, continuous pressure applications. Check with local inspection authorities for installation requirements. Maximum Working Pressure: 150psi (10 bar), Maximum recommended flow: 15 gpm (57 lpm).

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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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