More About Watts 757 Double Check Detector Assemblies
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Series 757NaDCDA Double Check Detector 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 bi-link check valves, two shutoff valves, and four test cocks.
More About Watts 757 Double Check Detector Assemblies
Series 757NaDCDA Double Check Detector 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 bi-link check valves, two shutoff valves, and four test cocks.