A vacuum breaker is an anti-siphon device that prevents backflow of contaminated water into a clean water supply. It works by allowing air to enter the system when a vacuum forms, breaking the siphon effect and protecting the potable water supply from contamination. Vacuum breakers are commonly used in outdoor faucets, irrigation systems, and hose bibs, as well as in fixtures like urinals or toilets. Regular testing and maintenance of vacuum breakers ensure they function correctly, maintaining water safety and compliance with plumbing codes.
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