JPS552812A - Butterfly valve - Google Patents

Butterfly valve

Info

Publication number
JPS552812A
JPS552812A JP7377478A JP7377478A JPS552812A JP S552812 A JPS552812 A JP S552812A JP 7377478 A JP7377478 A JP 7377478A JP 7377478 A JP7377478 A JP 7377478A JP S552812 A JPS552812 A JP S552812A
Authority
JP
Japan
Prior art keywords
valve
valve body
liquid
opening
plate
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
JP7377478A
Other languages
Japanese (ja)
Inventor
Takayoshi Uno
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 JP7377478A priority Critical patent/JPS552812A/en
Publication of JPS552812A publication Critical patent/JPS552812A/en
Pending legal-status Critical Current

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  • Lift Valve (AREA)

Abstract

PURPOSE: To provide a butterfly valve which provides a liquid flow passage of a rectangular cross section and an adjustable opening as desired and wherein an excellent opening curve can be easily obtained over the whole area of the valve opening.
CONSTITUTION: A valve body 1 is formed to provide a substantially rectangular cross section as taken along a plane perpendicular to the direction of a flow of liquid. A valve shaft 2 is pivotally received, at its both ends, in through-holes formed in both side walls of the valve body 1. The valve shaft 2 has a rectangular valve plate 3 secured thereto which is adapted to abut against the surrounding four walls of the valve body 1 to stop liquid when it is in a closed position. The valve body 1 has curved sections 11, 12 formed in the upper and lower walls thereof which sections 11, 12 have a curve involved in a cylindrical plane which is defined by a full rotation of the valve plate 3 around the axis of the valve shaft 2. The valve body 1 further has a pair of opening adjuster plates 51, 52 disposed to face outer sliding contact sections 31, 32 of the valve plate 3 at the position of the valve plate 3 at which the valve plate 3 is ready to be opened. The adjuster plates 51, 52 are each formed into a narrow elongated plate and are secured by a suitable number of fastening screws 61 to the bottoms of cover members 41, 42 which are removably received in a pair of openings formed in the upper and lower walls of the valve body 1 to extend in a direction transverse to the flow of liquid.
COPYRIGHT: (C)1980,JPO&Japio
JP7377478A 1978-06-20 1978-06-20 Butterfly valve Pending JPS552812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7377478A JPS552812A (en) 1978-06-20 1978-06-20 Butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7377478A JPS552812A (en) 1978-06-20 1978-06-20 Butterfly valve

Publications (1)

Publication Number Publication Date
JPS552812A true JPS552812A (en) 1980-01-10

Family

ID=13527882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7377478A Pending JPS552812A (en) 1978-06-20 1978-06-20 Butterfly valve

Country Status (1)

Country Link
JP (1) JPS552812A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6228970U (en) * 1985-08-07 1987-02-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6228970U (en) * 1985-08-07 1987-02-21
JPH0235089Y2 (en) * 1985-08-07 1990-09-21

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