Watts Datasheets for Backflow Preventers

Backflow preventers are assemblies consisting of two check valves and two shut off valves. These assemblies may also include test cocks for each chamber.
Backflow Preventers: Learn more

Product Name Notes
Portable Hydrant Meter Backflow Preventers -- 4000BLT Model 4000BLT Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted from entering into the potable water supply where flow is in one direction and the possibility of...
Portable Hydrant Meter Backflow Preventers with Meter Housing -- 6000HMB Model 6000HMB Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted water from entering into the potable water supply where flow is in one direction and the possibility...
Portable Hydrant Meter Backflow Preventers -- 994BLT Model 994BLT Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted from entering into the potable water supply where flow is in one direction and the possibility of...
Portable Hydrant Meter Backflow Preventers with Meter -- 994HMB Model 994HMB Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted water from entering into the potable water supply where flow is in one direction and the possibility...
Combination Fill Valve and Backflow Preventers -- 911, 911S Series 911, 911S Combination Fill Valve and Backflow Preventers are for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when...
Bronze Combination Fill Valve and Backflow Preventers -- B911, B911S Series B911, B911S Bronze Combination Fill Valve and Backflow Preventers are for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow...
Combination Bronze Dial Set Fill Valve and Backflow Preventer -- BD911 Series BD911 combination fill valve and backflow preventer consists of a Model 9D backflow preventer and Model BD1156F feed water pressure regulator in one pre-assembled unit. This valve is a...