JPS5628355A - Sealing mechanism for butterfly valve - Google Patents

Sealing mechanism for butterfly valve

Info

Publication number
JPS5628355A
JPS5628355A JP5871779A JP5871779A JPS5628355A JP S5628355 A JPS5628355 A JP S5628355A JP 5871779 A JP5871779 A JP 5871779A JP 5871779 A JP5871779 A JP 5871779A JP S5628355 A JPS5628355 A JP S5628355A
Authority
JP
Japan
Prior art keywords
valve
seat ring
crown
valve plate
closing
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
JP5871779A
Other languages
Japanese (ja)
Inventor
Mikima Nakanishi
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.)
Tomoe Technical Research Co Ltd
Original Assignee
Tomoe Technical Research Co Ltd
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 Tomoe Technical Research Co Ltd filed Critical Tomoe Technical Research Co Ltd
Priority to JP5871779A priority Critical patent/JPS5628355A/en
Priority to US06/138,351 priority patent/US4289297A/en
Priority to CA349,661A priority patent/CA1125725A/en
Priority to NO801080A priority patent/NO148935C/en
Priority to AU57515/80A priority patent/AU526770B2/en
Priority to MX182003A priority patent/MX150289A/en
Priority to DE3014854A priority patent/DE3014854C2/en
Priority to PH23923A priority patent/PH18033A/en
Priority to BR8002398A priority patent/BR8002398A/en
Priority to ES491443A priority patent/ES491443A0/en
Priority to GB8012798A priority patent/GB2046882B/en
Priority to AT80301262T priority patent/ATE4066T1/en
Priority to EP80301262A priority patent/EP0018220B1/en
Publication of JPS5628355A publication Critical patent/JPS5628355A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lift Valve (AREA)

Abstract

PURPOSE: To obtain an optimal sealed condition through a minimal operating force by displacing the width of a crown circumferentially to a specific relation in a valve for which a seat ring provided with the annular crown onto which a valve plate is pressed at closing is arranged on the inside of a valve disc.
CONSTITUTION: A butterfly valve includes a valve plate 1 arranged rotatably round an axis of rotation C in valve disc; the valve plate 1 is pressed by a seat ring 2 of elastic material arranged on the inside of the valve disc when the valve is opened, and thus the valve is sealed up. There is formed a crown at center of the seat ring 2, which is effective to improve a sealing performance of the valve plate 1 at closing. In this case, as will be apparent from a flat pattern of the inside of the seat ring 2 covering almost semicircumference, the seat ring crown is formed so that the width at a central point A between valve shaft positions S1 and S2 will be maximized and gradually tapered in the directions S1, S2 therefrom.
COPYRIGHT: (C)1981,JPO&Japio
JP5871779A 1979-04-20 1979-05-15 Sealing mechanism for butterfly valve Pending JPS5628355A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP5871779A JPS5628355A (en) 1979-05-15 1979-05-15 Sealing mechanism for butterfly valve
US06/138,351 US4289297A (en) 1979-04-20 1980-04-08 Butterfly valve
CA349,661A CA1125725A (en) 1979-04-20 1980-04-11 Butterfly valve
NO801080A NO148935C (en) 1979-04-20 1980-04-14 Butterfly valve.
AU57515/80A AU526770B2 (en) 1979-04-20 1980-04-16 Butterfly valve
MX182003A MX150289A (en) 1979-04-20 1980-04-17 IMPROVED BUTTERFLY VALVE
DE3014854A DE3014854C2 (en) 1979-04-20 1980-04-17 Throttle valve
PH23923A PH18033A (en) 1979-04-20 1980-04-18 Butterfly valve
BR8002398A BR8002398A (en) 1979-04-20 1980-04-18 BUTTERFLY VALVE
ES491443A ES491443A0 (en) 1979-04-20 1980-04-18 IMPROVEMENTS IN THE BUTTERFLY VALVES
GB8012798A GB2046882B (en) 1979-04-20 1980-04-18 Butterfly valve
AT80301262T ATE4066T1 (en) 1979-04-20 1980-04-18 FLAP VALVE.
EP80301262A EP0018220B1 (en) 1979-04-20 1980-04-18 Butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5871779A JPS5628355A (en) 1979-05-15 1979-05-15 Sealing mechanism for butterfly valve

Publications (1)

Publication Number Publication Date
JPS5628355A true JPS5628355A (en) 1981-03-19

Family

ID=13092237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5871779A Pending JPS5628355A (en) 1979-04-20 1979-05-15 Sealing mechanism for butterfly valve

Country Status (1)

Country Link
JP (1) JPS5628355A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0195868A (en) * 1987-10-09 1989-04-13 Hitachi Ltd How to join insulation coated wire and terminal
US4926903A (en) * 1989-05-05 1990-05-22 Tomoe Technical Research Company Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve
USRE33649E (en) * 1989-02-17 1991-07-30 Tomoe Technical Research Company Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve
JPH07174596A (en) * 1994-12-22 1995-07-14 Tomoe Gijutsu Kenkyusho:Kk Butterfly valve having flow rate measuring function and method of measuring flow rate in butterfly valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0195868A (en) * 1987-10-09 1989-04-13 Hitachi Ltd How to join insulation coated wire and terminal
USRE33649E (en) * 1989-02-17 1991-07-30 Tomoe Technical Research Company Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve
US4926903A (en) * 1989-05-05 1990-05-22 Tomoe Technical Research Company Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve
JPH07174596A (en) * 1994-12-22 1995-07-14 Tomoe Gijutsu Kenkyusho:Kk Butterfly valve having flow rate measuring function and method of measuring flow rate in butterfly valve

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