Turbine controlled metering valve
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United States of America Patent
Stats
-
Sep 15, 1998
Grant Date -
N/A
app pub date -
Oct 30, 1995
filing date -
Oct 30, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A metering valve includes a main valve and a pilot valve for operating the main valve. A low operating force pawl and ratchet system rotates a cam to open the pilot valve to initiate a cycle of operation. When the main valve is opened, a turbine wheel in the flow path rotates to measure flow. Turbine rotation is transmitted to the cam through a reducing gear assembly and a lost motion connection in order to reclose the pilot and main valves after a predetermined volume of flow is measured.
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Cited Art Landscape
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