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A backflow prevention system prevents backflow Backflow prevention systems are devices. This 1 12 inch double check valve backflow preventer assembly is.

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. NFPA-Compliant Automatic Control Valves Strainers And Relief Valves. The risks to drinking water quality from backflow contamination incidents. Water expansion andor water hammer downstream of the backflow preventer can cause.

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Close 2 shut off valve then close 1 shut-off valve. Ad Complete Fire Protection With Our NFPA-Compliant Backflow Assembly. Alameda County Water District 43885 S Grimmer Boulevard Fremont CA.

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