JPS5517776A - Pressure control valve - Google Patents
Pressure control valveInfo
- Publication number
- JPS5517776A JPS5517776A JP9123578A JP9123578A JPS5517776A JP S5517776 A JPS5517776 A JP S5517776A JP 9123578 A JP9123578 A JP 9123578A JP 9123578 A JP9123578 A JP 9123578A JP S5517776 A JPS5517776 A JP S5517776A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- serves
- self
- improve
- actuator
- 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
Abstract
PURPOSE: To improve a control precision of the valve which serves as both a relief valve and a self-suction valve, by allowing a cross-section of a choke to automatically change in proportion to the pressure of an actuator working line.
CONSTITUTION: When an actuator 29 connected to a primary port 11 selfruns, an opening area of chokes 17 and 18 can be held in a maximum condition. In the meantime, when the pressure of the primary port 11 is increased due to a load which works on the actuator 29, only an idle valve 16 is first displaced due to a difference in a power produced as a result of the difference in the area between at both ends of a main valve 13, and thus, the opening area of the chokes 17 and 18 can be changed in a narrow range. This allows a pressure control valve to improve the precision of a valve, which serves as a self-suction valve, without damaging the functioning of a relief valve, and on the contrary, to improve the precision of a valve, which serves as the relief valve, without damaging the functioning of the self-suction valve.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9123578A JPS5517776A (en) | 1978-07-25 | 1978-07-25 | Pressure control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9123578A JPS5517776A (en) | 1978-07-25 | 1978-07-25 | Pressure control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5517776A true JPS5517776A (en) | 1980-02-07 |
Family
ID=14020750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9123578A Pending JPS5517776A (en) | 1978-07-25 | 1978-07-25 | Pressure control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5517776A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107830011A (en) * | 2017-09-30 | 2018-03-23 | 潍柴动力股份有限公司 | The method and system of valve port area test are carried out based on excavator complete machine |
-
1978
- 1978-07-25 JP JP9123578A patent/JPS5517776A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107830011A (en) * | 2017-09-30 | 2018-03-23 | 潍柴动力股份有限公司 | The method and system of valve port area test are carried out based on excavator complete machine |
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