JPS57110884A - Direction changeover valve equipped with pressure compensation valve - Google Patents

Direction changeover valve equipped with pressure compensation valve

Info

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
Application number
JP18520980A
Other languages
Japanese (ja)
Inventor
Megumi Miyake
Kenichi Shimoura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nabco Ltd
Original Assignee
Nabco Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nabco Ltd filed Critical Nabco Ltd
Priority to JP18520980A priority Critical patent/JPS57110884A/en
Publication of JPS57110884A publication Critical patent/JPS57110884A/en
Pending legal-status Critical Current

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  • 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
JP18520980A 1980-12-27 1980-12-27 Direction changeover valve equipped with pressure compensation valve Pending JPS57110884A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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