JPS5783759A - Fluid pressure control device - Google Patents
Fluid pressure control deviceInfo
- Publication number
- JPS5783759A JPS5783759A JP15856380A JP15856380A JPS5783759A JP S5783759 A JPS5783759 A JP S5783759A JP 15856380 A JP15856380 A JP 15856380A JP 15856380 A JP15856380 A JP 15856380A JP S5783759 A JPS5783759 A JP S5783759A
- Authority
- JP
- Japan
- Prior art keywords
- valve seat
- closing
- diameter portion
- large diameter
- piston
- 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
- Lift Valve (AREA)
Abstract
PURPOSE: To improve the opening/closing of a fluid passage by providing a large diameter portion of predetermined width on a piston head guide circumferential surface preventing direct contact of the piston head with a valve seat thus minimizing the flow constriction effect.
CONSTITUTION: A gap is given between a valve seat 103 a valve body 107a of a large diameter portion of a piston which comes in contact with the valve seat in proximity of the end at the side where an annular guide surface 104a of a back-up 104 comes in contact with the valve seat 103. Thus the flow passage area which changes at the time of the flow passage opening/closing is determined by (circumferential length of the large diameter portion of the piston) X (gap length between the valve seat and the valve body) thereby minimizing the constriction effect of the fluid passage for improved opening/closing of the passage.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15856380A JPS5783759A (en) | 1980-11-11 | 1980-11-11 | Fluid pressure control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15856380A JPS5783759A (en) | 1980-11-11 | 1980-11-11 | Fluid pressure control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5783759A true JPS5783759A (en) | 1982-05-25 |
Family
ID=15674428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15856380A Pending JPS5783759A (en) | 1980-11-11 | 1980-11-11 | Fluid pressure control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5783759A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5248416B1 (en) * | 1970-09-07 | 1977-12-09 |
-
1980
- 1980-11-11 JP JP15856380A patent/JPS5783759A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5248416B1 (en) * | 1970-09-07 | 1977-12-09 |
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