Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1991-02-25
1992-01-21
Michalsky, Gerald A.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
137218, 137436, F16K 2402
Patent
active
050820176
ABSTRACT:
A ball cock for a flush tank having a valve chamber connected with a discharge chamber. A float operated piston valve is mounted in the valve chamber to control water flow to the discharge chamber. A hush tube connected to the discharge chamber feeds the water to the bottom of the flush tank. A combined volume control and anti-siphon valve is mounted in the discharge chamber between the inlet and hush tube to regulate the rate of flow and to act as a vacuum break under conditions of negative pressure in the water supply line.
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Evans Frank C.
McGhee Charles M.
Spurgeon Gordon L.
Michalsky Gerald A.
Wolverine Brass, Inc.
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