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Bronze Residential Fire Sprinkler System Dual Check Backflow Preventers



1 and 1 1/4 in. (25 to 32mm)


Series 20S Residential Fire Sprinkler System Dual Check Backflow Preventers are installed at the residential fire sprinkler service connection to protect the water supply against polluted water being siphoned back from the sprinkler system. Maximum Working Pressure: 175psi (12.06 bar).

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Disclaimer: Ames product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Ames Technical Service. Ames 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 Ames products previously or subsequently sold.

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