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Can an atmospheric, anti‐siphon vacuum breaker be installed on a hose bibb?

April 26, 2017anti-siphon atmospheric bibb breaker hose installed vacuum

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Can an atmospheric, anti‐siphon vacuum breaker be installed on a hose bibb?

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Theoretically yes, but practically no. An anti-siphon vacuum breaker must be elevated above the sill cock to operate properly. This would require elevated piping up to the vacuum breaker and down to the sill cock and is normally not a feasible installation. On the other hand, a hose bibb vacuum breaker can be attached directly to the sill cock, without plumbing changes and at minor cost.