Valve, in particular pilot-operated proportional directional poppet valve
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United States of America Patent
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-
May 30, 2017
Grant Date -
Nov 12, 2015
app pub date -
Jul 18, 2013
filing date -
Aug 3, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A valve, in particular a pilot-operated proportional directional poppet valve, has a valve housing (7) with a fluid inlet (21) and a fluid outlet (23). The fluid stream between the fluid inlet (21) and the fluid outlet (23) is adjustable by a main piston (27). A pilot valve chamber (37) on a rear face (29) of the main piston (27) has a pilot valve closing member (33) movable by an actuating device (69) to adjust the fluid stream between the pilot valve chamber (37) and the fluid outlet (23). A supply aperture (3) is between the fluid inlet (21) and the pilot valve chamber (37). The opening cross-section of the supply aperture (3) can be reduced by a control element (49).
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