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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