JPS57139823A - Self-actuated pressure control valve - Google Patents
Self-actuated pressure control valveInfo
- Publication number
- JPS57139823A JPS57139823A JP2419481A JP2419481A JPS57139823A JP S57139823 A JPS57139823 A JP S57139823A JP 2419481 A JP2419481 A JP 2419481A JP 2419481 A JP2419481 A JP 2419481A JP S57139823 A JPS57139823 A JP S57139823A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- outlet
- pressure
- inlet
- pipe
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
PURPOSE:To control a degree of opening of a valve by itself in accordance with a flow rate, by providing not only a main flow formed by an inlet, a valve body and an outlet, but also a by-pass communicating to the outlet through the inlet, a valve body back part, and a controlling pilot valve, and controlling by a reducing element. CONSTITUTION:Not only a main flow flowing to an outlet 3 through an inner valve 9 and a cage 5 from an inlet 2, but also a by-pass passing through a pressure conducting pipe 18, a pipe 41, valve body back parts 16a, 16b, a pipe 43, a controlling pilot valve 20, a pipe 45 and a pressure conducting pipe 19 are formed. The controlling pilot valve 20 is provided with an inner valve 22 freely slidable in the axial direction, in the inside of a cylindrical body 21 having an inlet 21a and an outlet 21b. Pressure of the outlet 21b is fed back to a diaphragm 24. A working point setting mechanism 26 of the inner valve 22 sets a position by press-contacting of a lever 33 and a conical part 31 of a shaft 14 of the inner valve 9. Pressure of the valve body back part is controlled by controlling needle valves 40, 42 and 44. In this way, the inner valve 9 is operated up and down so that pressure of the outlet side 3 is varied in accordance with the quantity of water to be used, which is suitable for reducing the water leakage of water service.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2419481A JPS57139823A (en) | 1981-02-23 | 1981-02-23 | Self-actuated pressure control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2419481A JPS57139823A (en) | 1981-02-23 | 1981-02-23 | Self-actuated pressure control valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57139823A true JPS57139823A (en) | 1982-08-30 |
JPS634204B2 JPS634204B2 (en) | 1988-01-28 |
Family
ID=12131508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2419481A Granted JPS57139823A (en) | 1981-02-23 | 1981-02-23 | Self-actuated pressure control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57139823A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04120116U (en) * | 1991-04-10 | 1992-10-27 | 小熊機械株式会社 | switching valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5430532A (en) * | 1977-08-12 | 1979-03-07 | Fushiman Co Ltd | Selffoperated pilot working pressure reducing valve |
-
1981
- 1981-02-23 JP JP2419481A patent/JPS57139823A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5430532A (en) * | 1977-08-12 | 1979-03-07 | Fushiman Co Ltd | Selffoperated pilot working pressure reducing valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04120116U (en) * | 1991-04-10 | 1992-10-27 | 小熊機械株式会社 | switching valve |
Also Published As
Publication number | Publication date |
---|---|
JPS634204B2 (en) | 1988-01-28 |
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