JPS5655763A - Check valve equipped with auxiliary valve - Google Patents

Check valve equipped with auxiliary valve

Info

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
Application number
JP13198879A
Other languages
Japanese (ja)
Inventor
Yutaka Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP13198879A priority Critical patent/JPS5655763A/en
Publication of JPS5655763A publication Critical patent/JPS5655763A/en
Pending legal-status Critical Current

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  • 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
JP13198879A 1979-10-13 1979-10-13 Check valve equipped with auxiliary valve Pending JPS5655763A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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