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Yard hydrant with drain port air line

a technology of air line and yard hydrant, which is applied in the field of yard hydrant, can solve problems such as inacceptable cross-connection

Inactive Publication Date: 2007-02-22
WCM IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this design is that ground water or other contaminants can enter the yard hydrant through the same drain port, thus creating an unacceptable cross-connection.
Also, water may be retained within the hydrant which could freeze, and lead to a rupture.

Method used

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  • Yard hydrant with drain port air line
  • Yard hydrant with drain port air line

Examples

Experimental program
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Effect test

Embodiment Construction

[0008] A yard hydrant 10 has a valve body 12, a valve seat 14, a drain port or hole 16, an inlet 18 which is connected to a source of pressurized water (not shown) and an outlet 20 at its top. Connected at one end to the valve body 12 is a standpipe 22 that extends vertically and is connected to a head casting 24 at the opposite end.

[0009] The head casting 24 has an inlet 26 coupled to the standpipe 22 and a discharge conduit or outlet 28 that preferably extends outwardly from the head casting 24 and a fluid conduit 30 that extends between the inlet 26 and the outlet 28.

[0010] Disposed within the valve body 12 is a closure valve plunger 32 that is connected to a valve stem or actuator rod 34 that extends from the closure valve 32 through the standpipe 22 and is connected to an actuator device 36 attached to the head casting 24 such as a lever or handle.

[0011] Mounted adjacent to the drain port 16 is an air line 38. The air line 38 is mounted to the drain port 16 in any convention...

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PUM

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Abstract

A yard hydrant that facilitates the evacuation of water from therein. The wall hydrant has a standpipe having a drain port wherein the standpipe is coupled to a head casing that has a discharge conduit. An air line is mounted adjacent and to the drain port and extends from the drain port to an end that may be attached to a pressurized fluid source. Thus, when water remains in the standpipe even after a closure valve is closed, pressurized air is supplied through the air line and drain port into the standpipe to force retained water toward and out of the discharge conduit.

Description

CROSS REFERENCE TO A RELATED APPLICATION [0001] This application is based upon Applicants' Provisional Application Ser. No. 60 / 595,980 filed Aug. 22, 2005.BACKGROUND OF THE INVENTION [0002] This invention is directed toward a yard hydrant, and more specifically to a yard hydrant that flushes water out of a valve body and standpipe. [0003] Yard hydrants are well known in the art and have an inlet valve connected to a water supply that is located below the frost line in the ground. When a hydrant is shut off, a drain port at the inlet valve is opened to allow water in the hydrant to drain out. The problem with this design is that ground water or other contaminants can enter the yard hydrant through the same drain port, thus creating an unacceptable cross-connection. Also, water may be retained within the hydrant which could freeze, and lead to a rupture. Accordingly, there is a need in the art for an improved yard hydrant. [0004] An objective of the present invention is to provide a y...

Claims

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Application Information

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IPC IPC(8): E03B9/02
CPCE03B9/14Y10T137/5497
Inventor BALL, WILLIAM T.
Owner WCM IND INC
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