JPS5556209A - Reducing valve with emergency cut-off system - Google Patents
Reducing valve with emergency cut-off systemInfo
- Publication number
- JPS5556209A JPS5556209A JP12953778A JP12953778A JPS5556209A JP S5556209 A JPS5556209 A JP S5556209A JP 12953778 A JP12953778 A JP 12953778A JP 12953778 A JP12953778 A JP 12953778A JP S5556209 A JPS5556209 A JP S5556209A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- reducing valve
- reducing
- close
- 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
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
PURPOSE: To make it possible to obtain adequate feed water pressure in accordance with the quantity of feed water and also to close a main valve automatically in case of a burst of a water pipe, etc., by providing several pilot valves to a reducing valve fitted to a feed water duct.
CONSTITUTION: When a flow rate at reducing valve 1 is low, passage a-b of alternation pilot valve 9 is open because of a difference between pressure before and that after orifice 13 to link intake 2 of reducing valve 1 to work room 5 of main valve 4 and pressure at outlet 3 of reducing valve 1 is controlled to set pressure set to reducing pilot valve 10 which exercise a supervision over the pressure. When the flow rate at reducing valve 1 increases, passage b-c of valve 9 is opened and work room 5 is reduced in pressure to make main valve 4 fully open. Once the rate at reducing valve 1 is excessive, passages Q-R and MN of emergence cutting-off pilot valves 11 and 12 are close and open respectively and main valve 4 is close.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12953778A JPS5556209A (en) | 1978-10-23 | 1978-10-23 | Reducing valve with emergency cut-off system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12953778A JPS5556209A (en) | 1978-10-23 | 1978-10-23 | Reducing valve with emergency cut-off system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5556209A true JPS5556209A (en) | 1980-04-24 |
JPS6145251B2 JPS6145251B2 (en) | 1986-10-07 |
Family
ID=15011965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12953778A Granted JPS5556209A (en) | 1978-10-23 | 1978-10-23 | Reducing valve with emergency cut-off system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556209A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6087011U (en) * | 1983-11-17 | 1985-06-15 | 株式会社山武 | Flow rate adjustment device |
-
1978
- 1978-10-23 JP JP12953778A patent/JPS5556209A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6087011U (en) * | 1983-11-17 | 1985-06-15 | 株式会社山武 | Flow rate adjustment device |
Also Published As
Publication number | Publication date |
---|---|
JPS6145251B2 (en) | 1986-10-07 |
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