Fluid handling – Hydrant type – With pump or ejector
Patent
1992-09-01
1993-09-21
Walton, George L.
Fluid handling
Hydrant type
With pump or ejector
137301, 138 32, 417187, E03B 712, E03B 914
Patent
active
052460282
ABSTRACT:
A freeze and contamination resistant hydrant, for controlling fluid flow includes: a vertically elongated conduit having a lower portion adapted for installation underground, the conduit having a lower fluid inlet associated with that lower portion, and an upper fluid outlet, for passing fluid; a valve in the lower portion of the conduit; a plunger, with a stopper of substantially circular horizontal cross-section attached, extending downward through the conduit into the valve for closing and opening the same; an upper drain port in the valve above the stopper drains any fluid trapped above the valve when the valve is closed; a venturi conduit below the valve having a venturi port; and a fluid reservoir surrounding at least the lower portion of the conduit. When the valve is opened, fluid passes from the lower fluid inlet to the upper fluid outlet and through the venturi conduit to induce fluid flow from the reservoir through the venturi port. When the valve is closed, fluid is prevented from flowing from the lower fluid inlet to the upper fluid outlet, and fluid above the valve is drained into the reservoir through the drain port.
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Walton George L.
WCM Industries, Inc.
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