JPS5572966A - Unloading valve - Google Patents
Unloading valveInfo
- Publication number
- JPS5572966A JPS5572966A JP14425678A JP14425678A JPS5572966A JP S5572966 A JPS5572966 A JP S5572966A JP 14425678 A JP14425678 A JP 14425678A JP 14425678 A JP14425678 A JP 14425678A JP S5572966 A JPS5572966 A JP S5572966A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- piston
- port
- pressure
- 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 prevent the pressure in an unloading valve system from becoming excessive with a simple structure by providing a piston valve at the valve rod portion extended from a valve body to an outlet side port side and opening the valve body through the piston valve when the pressure at the outlet side becomes above predetermined value.
CONSTITUTION: A passage 4 for communicating inlet and outlet side ports 2 and 3, the inlet port 2 and the outlet port 3 are formed at a body 1. A valve body 6 is seated to a valve seat 5 formed oppositely to the passage 4. The valve body 6 is provided at a valve rod 7. The upper end of the valve rod 7 is engaged with the recess 9 formed on a seat plate 8. A spring 12 is interposed between the seat plate 8 and the valve body 6. The valve rod 7 is projected from the valve body 6 toward the passage 4 side. A piston valve 19 having a piston 16, a check valve 17 and a spring 18 is provided at the projected portion 7b of the valve rod 7. When the pressure at the port 3 side is higher than predetermined value, the check valve 17 is closed to cause the piston 16 to be urged upwardly to thereby open the valve body 6 so as to exhaust pressure liquid from an excessive water port 15.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14425678A JPS5572966A (en) | 1978-11-24 | 1978-11-24 | Unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14425678A JPS5572966A (en) | 1978-11-24 | 1978-11-24 | Unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5572966A true JPS5572966A (en) | 1980-06-02 |
Family
ID=15357861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14425678A Pending JPS5572966A (en) | 1978-11-24 | 1978-11-24 | Unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5572966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032373A (en) * | 2010-12-10 | 2011-04-27 | 芜湖盛力制动有限责任公司 | Unloading valve of automobile and engineering machinery braking system |
-
1978
- 1978-11-24 JP JP14425678A patent/JPS5572966A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032373A (en) * | 2010-12-10 | 2011-04-27 | 芜湖盛力制动有限责任公司 | Unloading valve of automobile and engineering machinery braking system |
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