Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 27, 2021
Patent Application Number
16452930
Date Filed
June 26, 2019
Patent Citations Received
Patent Primary Examiner
Patent abstract
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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