Double check back flow prevention device

Details Double check back flow prevention device Double check back flow prevention device

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 24/02 (2006.01) E03C 1/10 (2006.01) F16K 15/06 (2006.01)

Patent

CA 2666533

A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.

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