Valve body with a housing having a cylindrical flow passage
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United States of America Patent
Stats
-
Jan 9, 1990
Grant Date -
N/A
app pub date -
Sep 16, 1988
filing date -
Sep 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve piston (1) is axially movably arranged in a valve housing (8) having a cylindrical flow passage. A circumferential groove (2) of the piston (1) carries a sealing ring (3) for separating a high pressure side (H) from a low pressure side (L) of the valve. The sealing ring (3) has a cross-sectionally trapezoid shaped portion (4) of which the narrow side (3a) may be pressed tightly to seal against the inner valve seat surface (8') of the housing (8). At least one spring ring (7) is arranged to radially outwardly bias the sealing ring (3) for sealing against the valve seat surface (8').
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