JPS5655763A - Check valve equipped with auxiliary valve - Google Patents
Check valve equipped with auxiliary valveInfo
- Publication number
- JPS5655763A JPS5655763A JP13198879A JP13198879A JPS5655763A JP S5655763 A JPS5655763 A JP S5655763A JP 13198879 A JP13198879 A JP 13198879A JP 13198879 A JP13198879 A JP 13198879A JP S5655763 A JPS5655763 A JP S5655763A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- main valve
- water
- closure
- auxiliary valve
- 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
- Check Valves (AREA)
Abstract
PURPOSE: To prevent generation of water hammer and minimize the amount of counter current by setting a main valve body which is urged in the direction of closure and auxiliary valve body equipped with a slow closing device.
CONSTITUTION: When the driving force of a pump is cut off, a main valve body 1 closes perfectly before the flow rate reduces and becomes zero, by means of the strong urging force of a multiwinding torsion coil spring 7 which urges the main valve body 1 in the direction of closure. At this time, as an auxiliary valve body 5 is not urged by the spring 7, the auxilary valve is opened, and the pumped-up water flows through the opening. and the main valve body 1 is able to close during the flow rate becomes zero. Therefore, counter current is not generated in closure of the main valve body 1, and water hammer is not generated perfectly. When the pumped-up water which passes through the auxiliary valve converts to counter flow from the amount of water zero, the auxiliary valve 5 is slowly closed by the action of a hydraulic dashpot 8.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13198879A JPS5655763A (en) | 1979-10-13 | 1979-10-13 | Check valve equipped with auxiliary valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13198879A JPS5655763A (en) | 1979-10-13 | 1979-10-13 | Check valve equipped with auxiliary valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5655763A true JPS5655763A (en) | 1981-05-16 |
Family
ID=15070922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13198879A Pending JPS5655763A (en) | 1979-10-13 | 1979-10-13 | Check valve equipped with auxiliary valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655763A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100359230C (en) * | 2004-08-19 | 2008-01-02 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
-
1979
- 1979-10-13 JP JP13198879A patent/JPS5655763A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100359230C (en) * | 2004-08-19 | 2008-01-02 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
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