Fluid handling – Diverse fluid containing pressure systems – Gas pressure storage over or displacement of liquid
Patent
1997-06-06
1998-09-08
Michalsky, Gerald A.
Fluid handling
Diverse fluid containing pressure systems
Gas pressure storage over or displacement of liquid
137107, 1372361, F16K 2400
Patent
active
058031111
ABSTRACT:
An apparatus for purging a water supply line during winter weather conditions using pressurized air includes an air tank capable of holding a sufficient supply of pressurized air to purge the supply line. A valve is connected to an air port of the tank and has a valve member movable between open and closed positions to control the flow of air into and out of the air tank. There is an air bleeder mechanism having an air inlet connectible to the supply line and an air outlet. The mechanism permits air, but not water, to pass from the supply line to the air tank and also permits air to flow back through the mechanism into the supply line. A manually operated valve is used to permit atmospheric air to flow through the air bleeder mechanism to the supply line.
REFERENCES:
patent: 4096877 (1978-06-01), Arledge, III
patent: 4269167 (1981-05-01), Embree
patent: 4355652 (1982-10-01), Perkins
Cottage Water Systems by Max Burns, published 1993 by Cottage Life Books, pp. 132 to 139.
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