YARD HYDRANT WITH CLOSURE VALVE CHECK VALVE

• US 20070044838A1
• Filed: 08/24/2005
• Published: 03/01/2007
• Est. Priority Date: 08/24/2005
• Status: Active Grant

• Current Assignee: WCM Industries Incorporated
• Original Assignee: WCM Industries Incorporated
• Inventors: BALL, William
• Granted Patent: US 7,249,609 B2
• Time in Patent Office: Days
• US Class Current: 137/285
• CPC Class Codes: E03B 9/14 Draining devices for hydrants
• CPC Class Codes: E03B 9/16 Devices for retaining foreign matter, e.g. sand
• CPC Class Codes: F16K 27/006 of hydrants
• CPC Class Codes: Y10T 137/5403 Removable valve with supplemental check valve
• CPC Class Codes: Y10T 137/5497 Protection against freezing
• CPC Class Codes: Y10T 137/7888 With valve member flexing about securement
• CPC Class Codes: Y10T 137/7891 Flap or reed
• CPC Class Codes: Y10T 137/8342 Liquid level responsive indicator, recorder or alarm

Abstract

A yard hydrant having a valve body with a valve seat and a drain port. A closure valve disposed within the valve body and engaging the valve seat. The valve body having a conduit in fluid communication with the drain port and a hollow interior of the valve body. A check valve disposed within the conduit to prevent fluid flow from the drain port through the conduit to the hollow interior.

Claims

1. A yard hydrant, comprising:

a valve body having a valve seat and a drain port;

a closure valve receivable within the valve body that engages the valve seat;

a conduit that extends through the closure valve, the conduit having one end in fluid communication with the drain port and the opposite end in fluid communication with a hollow interior of the valve body; and

a check valve disposed within the conduit that allows fluid to flow from the hollow interior through the conduit to the drain port and prevents fluid flow from the drain port through the conduit to the hollow interior.

2. The hydrant of claim 1 further comprising a standpipe mounted to and in fluid communication with the valve body.

3. The hydrant of claim 2 where in a valve rod is connected to the closure valve, the rod extending into and through the standpipe.

4. The hydrant of claim 3 further comprising a signal mechanism mounted to the valve rod.

5. The hydrant of claim 1 further comprising a signal mechanism that detects when fluid leaks from the drain port past the check valve and into the hollow interior of the valve body.