GB1218563A - Improvements in butterfly valves - Google Patents

Improvements in butterfly valves

Info

Publication number
GB1218563A
GB1218563A GB996967A GB996967A GB1218563A GB 1218563 A GB1218563 A GB 1218563A GB 996967 A GB996967 A GB 996967A GB 996967 A GB996967 A GB 996967A GB 1218563 A GB1218563 A GB 1218563A
Authority
GB
United Kingdom
Prior art keywords
valve member
sealing portion
seat
march
peripheral
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.)
Expired
Application number
GB996967A
Inventor
Gleb Kerensky
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB996967A priority Critical patent/GB1218563A/en
Publication of GB1218563A publication Critical patent/GB1218563A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

1,218,563. Valves. ENGLISH ELECTRIC CO. Ltd. 1 March, 1968 [2 March, 1967], No. 9969/67. Heading F2V. A butterfly valve comprises a casing 2, an annular seat whose innermost surface is of frusto-conical or part-spherical shape (11, Fig. 1, not shown), and a closure member 4 which is carried by spindles 6 and 8, the axes of which are offset in relation to the plane containing the peripheral sealing portion of the valve member. Both the seat and the peripheral valve member sealing portion are formed with two mating flat sections 20, so that with the valve member in its closed position (as shown), the flat portions abutt to form a fluid-tight seal, whereas with the valve member in its open position, the flat portion of the valve member peripheral sealing portion crosses the seat at 16 with a clearance therebetween.
GB996967A 1967-03-02 1967-03-02 Improvements in butterfly valves Expired GB1218563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB996967A GB1218563A (en) 1967-03-02 1967-03-02 Improvements in butterfly valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB996967A GB1218563A (en) 1967-03-02 1967-03-02 Improvements in butterfly valves

Publications (1)

Publication Number Publication Date
GB1218563A true GB1218563A (en) 1971-01-06

Family

ID=9882111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB996967A Expired GB1218563A (en) 1967-03-02 1967-03-02 Improvements in butterfly valves

Country Status (1)

Country Link
GB (1) GB1218563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212248A (en) * 1987-11-09 1989-07-19 Mobil Oil Corp Flapper valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212248A (en) * 1987-11-09 1989-07-19 Mobil Oil Corp Flapper valve

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