Hydraulic disconnector
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United States of America Patent
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-
Nov 15, 1994
Grant Date -
N/A
app pub date -
Feb 12, 1993
filing date -
Feb 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flow disconnector has an intermediate chamber connected between inlet and outlet check valves. A diaphragm controls a venting valve for the intermediate chamber which is designed to empty the intermediate chamber when the difference between inlet pressure and intermediate chamber pressure becomes too small. To prevent unnecessary emptying of the intermediate chamber, a pressure stabilizer is connected between the inlet and the intermediate chamber. The stabilizer holds the pressure in the intermediate chamber below the inlet pressure by an amount sufficient to prevent unnecessary emptying of the intermediate chamber.
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