发明名称 Intermediate valve for hydraulic control system - has close fit between piston and valve housing for sealing
摘要 <p>The spring-loaded intermediate valve is formed as a seat valve. It has a control spring in positive connection with a spring plate, which merges into a piston, integral with the valve seal. The piston (5) of the spring plate (4) and the section (6) of the valve housing (1) surrounding it, afe sealed by a close fit. The valve seal member (7) has an associated valve seat (8) on the housing section. The active cross section of the piston is chosen, so that the force applied by it due to the opening pressure of the hydraulic fluid is larger than the increase in force of the control spring (3) during opening.</p>
申请公布号 DE2648145(A1) 申请公布日期 1978.04.27
申请号 DE19762648145 申请日期 1976.10.23
申请人 FRIESEKE & HOEPFNER GMBH 发明人 KUSCHKE,HARTMUT,ING.
分类号 F16K11/044;(IPC1-7):15B13/02 主分类号 F16K11/044
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