Valve, in particular pilot-operated proportional pressure control valve
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Mar 5, 2013
filing date -
Mar 30, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A valve, in particular a pilot-operated proportional pressure control valve, has a valve housing (5) with a pressure supply port (7), a working port (9), and a drain port (11). In the valve housing (5), a main valve piston (15) can be moved by a pilot stage (13) for control of the fluid flow between the pressure supply port (7) and the working port (9). The pilot stage (13) has a valve closing element (43) for a pilot chamber (41). The valve closing element (43) is movable from an open position (OS) into a closed position (SS) by an actuating apparatus (45). The valve closing element (43) can actuate a leakage reduction stage (53).
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