发明名称 |
DIRECTIONAL CONTROL VALVE BLOCK |
摘要 |
<p>A plurality of directional control valves are included in a valve main body 1. Each of the directional control valves is provided with a spool 2, actuator ports 3,4, a communication passage 7, a parallel passage 6, a tandem passage 5, a first check valve 8 for permitting a flow of pressure fluid from the parallel passage 6 toward the communication passage 7, and a second check valve 9 for permitting a flow of pressure fluid from the tandem passage 5 toward the communication passage 7. For example, the first check valve 8 is slidably arranged in the second check valve 9, the second check valve 9 is provided with a through-hole 14 formed in communication with the communication passage 7, and a plug 11 is arranged in threaded engagement with the valve main body 1 such that an end portion of the first check valve 8 and an end portion of the second check valve 9 are covered by the plug 11.</p> |
申请公布号 |
EP1662150(B1) |
申请公布日期 |
2012.04.25 |
申请号 |
EP20040771381 |
申请日期 |
2004.08.02 |
申请人 |
HITACHI CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
KOBAYASHI, Y.;UENO, K.;MORIKAWA, R.;MATSUZAKI, H.;TAKAHASHI, K. |
分类号 |
F15B11/00;F16K11/07;F15B11/16;F15B13/04;F16K11/22 |
主分类号 |
F15B11/00 |
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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