Above-ground storage system
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United States of America Patent
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-
Aug 14, 1990
Issued Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Aug 17, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An above-ground storage system, especially for use with hazardous materials is disclosed. The system includes a first inner tank and a second outer tank. An air-operated diaphragm pump is used to fill the tank. In order to prevent overfilling of the tank and, therefore environmental contamination, a valve is installed in the air supply line to the air pump. The valve is operated by a float within the tank. When the float becomes submerged in liquid the valve is closed by an arm connected to the float.
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