FEBCO 765 Bronze FNPT 1-in Pressure Vacuum Breaker in the Backflow Preventers & Vacuum Breakers department at Lowes.com
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TYCO Plumbing on Twitter: "We recently replaced this #backflow preventer. The #sprinkler system was not completely drained, causing the #pipe to burst during a freeze. https://t.co/S5sUhBYBkW" / Twitter
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Trying to blow out sprinklers, air leaking from the backflow preventer? : r/HomeImprovement
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