Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1994-12-05
1995-10-31
Michalsky, Gerald A.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
13762517, 137889, 137892, F16K 2402, F16K 11078
Patent
active
054620791
ABSTRACT:
A hot and cold water mixing valve for use with faucets, shower/tub controls and other plumbing fittings includes a sleeve having a hot water inlet and a cold water inlet spaced therefrom and an outlet axially spaced from the inlets. There is a stem movable within the sleeve to control water flow from the inlets to the outlet. There is a water passage between the exterior of the stem and the interior of the sleeve and there is an axially extending air passage within the stem having an outer end in communication with air at ambient pressure. There are air outlets in the stem intermediate its ends which connect the air passage with the exterior of the stem. The stem exterior and the sleeve interior cooperate to provide an anti-siphon device to draw air from the air outlets into the water passage.
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Loschelder Todd C.
Mikol Erwin F.
Michalsky Gerald A.
Moen Incorporated
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