Fluid handling – Systems – Tank with internally extending flow guide – pipe or conduit
Patent
1997-11-21
1999-05-04
Michalsky, Gerald A.
Fluid handling
Systems
Tank with internally extending flow guide, pipe or conduit
137202, 137448, F16K 2404
Patent
active
058992278
ABSTRACT:
In a fuel storage tank having a fill pipe arranged to discharge within the tank below the normal liquid level in the tank, an air transfer valve is mounted within the fill pipe above the normal maximum liquid level, the valve being normally closed and having an outlet communicating with the head space in the tank and an inlet directed away from the direction of fluid flow in the fill pipe. An operating mechanism within the valve opens the valve in response to increased pressure in the fill pipe arising from air or vapour carried by fuel flowing in the pipe. The air transfer valve is preferably attached to the inside of the fuel pipe just above the normal maximum liquid level. The operating device within the air transfer valve may be a valve which is normally held in its closed position by gravity or a light spring closure force. Air in the top of the fill pipe is compressed by the supply of liquid fuel, causing the valve to open and allow air to pass through the valve and into the head space of the tank by way of an opening in the wall of the fill pipe.
REFERENCES:
patent: 4640304 (1987-02-01), Looney
patent: 5564465 (1996-10-01), Pettesch
Michalsky Gerald A.
W&J Risbridger Limited
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