Designed for use in health hazard cross connections and continuous pressure applications where the water enters the equipment at or below its flood rim. Provides protection against backsiphonage incidents only. Applications include irrigation systems, firelines, and industrial process water systems.

wattsnf8 vacuum breakero-ring

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The NRI's from AVG is the perfect twin function valve widely used when installing appliances. The non-return & isolating valve provides two important functions;