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3/8" Faucet Vented Dual Check Backflow Preventer; Meets ASSE Std. 1032 & Std. 1022, NSF-18
For pricing information and availability please contact your local branch.
- No. 9D is for protection against backflow of carbon dioxide gas & carbonated water into the water supply system to vending machines thus eliminating the hazardous reaction of carbon dioxide with copper tubing.
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