Valve with a control space vented via a sealing groove
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United States of America Patent
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Apr 16, 2019
Grant Date -
Jan 11, 2018
app pub date -
Jul 6, 2017
filing date -
Jul 6, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A valve includes a basic body, control spool, sealing ring, and control cover. The control spool is received in the basic body to be movable along a longitudinal axis. The basic body includes a counter-sealing surface, connecting channel, and tank channel having at least one first annular groove surrounding the control spool. The control cover and at least one end face of the control spool facing toward the longitudinal axis delimits, at least in part, a control space. The control cover includes a sealing surface that abuts the counter-sealing surface of the basic body. At least one of the sealing surface and the counter-sealing surface includes a sealing groove that surrounds the control space in ring-like fashion. The sealing ring is received in the sealing groove. The connecting channel opens out into the tank channel and into the sealing groove.
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