发明名称 |
PRESSURE LIMITING VALVE FOR HFA-FLUIDS |
摘要 |
<p>A pressure-limiting valve for hydraulic fluids comprises a stepped switching piston which is loaded by a closing spring to oppose high fluid pressure obtaining in an inflow duct of the valve. Radial transverse bores branch from an axially-extending bore in the switching piston. When the setting pressure established by the closing spring is exceeded, the transverse bores in the piston move past an O-ring seal as the piston compresses the spring, and pressure fluid thus flows from the axially-extending bore into a discharge duct of the valve. The stepped switching piston is guided in a pressure chamber by a portion of its cross-section which is greater than that in the zone of the O-ring seal. Adjacent the inflow duct, the axially-extending bore in the piston has a reduced flow cross-section. Further radial bores lead from the axially-extending bore in the piston in the region of the stepped portion of the latter.</p> |
申请公布号 |
HU187617(B) |
申请公布日期 |
1986.02.28 |
申请号 |
HU19830004200 |
申请日期 |
1983.12.08 |
申请人 |
HERMANN HEMSCHEIDT MASCHINENFABRIEK GMBH ET CO ,DE |
发明人 |
KRIEGER,KARL,DE;REINELT,WERNER,DE |
分类号 |
F16K17/04;F16K47/00;(IPC1-7):F15B13/02 |
主分类号 |
F16K17/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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