Automatic draining double check vacuum breaker

Details Automatic draining double check vacuum breaker Automatic draining double check vacuum breaker

E - Fixed Constructions

03

C

E03C 1/10 (2006.01) E03B 7/07 (2006.01) F16K 15/00 (2006.01) F16K 24/00 (2006.01)

Patent

CA 2597851

A vacuum breaker having a housing with an inlet for connection with the wall hydrant, an outlet for connection with the hose, and a central cavity. A drain valve is disposed within the housing between the central cavity and the inlet to permit drainage of fluid from the hydrant to the outlet end of the housing when the hose is not connected thereto. A first check valve is disposed within the housing between the central cavity and the inlet to control flow between the inlet and central cavity. A second check valve is disposed within the housing between the central cavity and the outlet to control flow between the central cavity and the outlet, and the first and second check valves have an arcuate sealing surface.

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