JPS57110884A - Direction changeover valve equipped with pressure compensation valve - Google Patents
Direction changeover valve equipped with pressure compensation valveInfo
- Publication number
- JPS57110884A JPS57110884A JP18520980A JP18520980A JPS57110884A JP S57110884 A JPS57110884 A JP S57110884A JP 18520980 A JP18520980 A JP 18520980A JP 18520980 A JP18520980 A JP 18520980A JP S57110884 A JPS57110884 A JP S57110884A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- valves
- compensation valve
- pilot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Multiple-Way Valves (AREA)
Abstract
PURPOSE: To enable serial installation of multiple number of direction change- over valves by combining a direction change-over valve, having a pilot type sequence valve, with a bleed-off type pressure compensation valve.
CONSTITUTION: When the pressure fluid source 3 is operated with spool valves 5a, 5b of direction change-over valves 1a, 1b set at a neutral position, the delivery fluid pressure acts, through No.1 annular groove 47 of a prssure compensation valve 2 and No.1 supply passage 22a, 22b, upon annular grooves 28a, 28b which are closed by the large diameter portions 12a, 13a, 12b, 13b of the spool valves 5a, 5b, so that the pressure starts to increse. This fluid pressure fills a pressure chamber 46 of the pressure compensation valve 2. At this time, the spring chamber 44 of the pressure compensation valve 2 is connected toa discharge passage 54a through No.2 supply passages, 26a, 26b, pilot type sequence valves 32a, 32b, bridge passages 25a, 25b, No.1 pilot passages 30a, 30b, a selector 3, and a pilot passage 33, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18520980A JPS57110884A (en) | 1980-12-27 | 1980-12-27 | Direction changeover valve equipped with pressure compensation valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18520980A JPS57110884A (en) | 1980-12-27 | 1980-12-27 | Direction changeover valve equipped with pressure compensation valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57110884A true JPS57110884A (en) | 1982-07-09 |
Family
ID=16166773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18520980A Pending JPS57110884A (en) | 1980-12-27 | 1980-12-27 | Direction changeover valve equipped with pressure compensation valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57110884A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5025625A (en) * | 1988-11-10 | 1991-06-25 | Hitachi Construction Machinery Co., Ltd. | Commonly housed directional and pressure compensation valves for load sensing control system |
JP2016191469A (en) * | 2016-08-03 | 2016-11-10 | 住友建機株式会社 | Directional control valve group for construction machine |
-
1980
- 1980-12-27 JP JP18520980A patent/JPS57110884A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5025625A (en) * | 1988-11-10 | 1991-06-25 | Hitachi Construction Machinery Co., Ltd. | Commonly housed directional and pressure compensation valves for load sensing control system |
JP2016191469A (en) * | 2016-08-03 | 2016-11-10 | 住友建機株式会社 | Directional control valve group for construction machine |
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