Anti-siphoning valve assembly and plumbing fixture including same

摘要: A plumbing system is provided with a coupling having chamber, an inlet passageway through which fluid may enter the chamber from supply, outlet exit and coupling, vent in communication ambient atmosphere chamber. The between source of liquid (e.g. control capsule for mixing hot cold water supplies via user operable valve) nozzle (e.g., hose-connected spray head). vacuum breaker check valve located includes member closing when pressure greater than at opening less inlet.