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US 7,401,620 B2Granted
Yard hydrant with drain port check valve
AssigneeWCM Industries, Inc.
InventorWilliam T Ball
Life of this patent
Estimating the term…
Abstract
A yard hydrant having a valve body with a drain port and a check valve mounted adjacent to the drain port to allow water to flow from the hydrant through the drain port to the ground and prevent ground water from flowing into the hydrant through the drain port and contaminating the water source.
Claims4
A yard hydrant comprising:
- a valve body having an inlet, an outlet, and a drain port;
- a standpipe coupled to the outlet of the valve body;
- a head casting coupled to the standpipe;
- a hollow tube connected to the valve body and in fluid communication with the drain port;
- a second tube disposed within the hollow tube;
- a check valve mounted within the second tube and positioned such that fluid will flow from the hydrant through the drain pipe and into the ground and fluid will not flow in the opposite direction the second tube being aligned within the hollow tube such that the check valve is aligned with the drain port—has been inserted following “direction”.
3 more elements
A yard hydrant, comprising:
- a valve body having a drain port;
- a stand pipe extending from the valve body and connected to a head casting;
- a separate pipe assembly attached to the valve body and having an elongated hollow tube that is generally in spaced parallel relation to the stand pipe;
- the separate pipe assembly being in fluid communication with the drain pipe and having a check valve mounted within the hollow tube.
1 more element
Dependencies are inferred from the claim text.