GB880835A - Improvements in and relating to butterfly valves - Google Patents

Improvements in and relating to butterfly valves

Info

Publication number
GB880835A
GB880835A GB1218259A GB1218259A GB880835A GB 880835 A GB880835 A GB 880835A GB 1218259 A GB1218259 A GB 1218259A GB 1218259 A GB1218259 A GB 1218259A GB 880835 A GB880835 A GB 880835A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
area
valve
levers
ring
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
GB1218259A
Inventor
Walter Lancelot Moore
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.)
GE Energy UK Ltd
Original Assignee
Boving and 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 Boving and Co Ltd filed Critical Boving and Co Ltd
Priority to GB1218259A priority Critical patent/GB880835A/en
Publication of GB880835A publication Critical patent/GB880835A/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
    • F16K1/228—Movable sealing bodies

Abstract

880,835. Valves. BOVING & CO. Ltd. March 30, 1960 [April 10. 1959], No.12182/59. Class 135. Upon turning the offset shaft 10 of a butterfly valve 9 to the closed position the upstream pressure acts over the whole area of corrugated diaphragm 6 i.e. over both areas C, M and since area C is larger than area M a force is produced which deflects the diaphragm and rocks radial spokelike levers 11 clockwise about their fulcra 12 so urging the outer spherical surface of a stainless steel sealing ring 5 against the seat 3. The inner part of the diaphragm may be supported by pieces 15 forming radial extensions of the levers 11. To open the valve, upstream pressure is admitted behind the diaphragm by a by-pass valve, not shown, balancing the pressures on each side of the area C but since packing 21 delays the outward flow of fluid to the space behind the area M the pressure acting on the front side thereof rocks the levers 11 anticlockwise to move the ring 5 whereupon the valve may be opened by turning shaft 10. The fluid admitted behind the diaphragm may be other than the controlled fluid e.g. compressed air. The ring 5 may be spring-loaded. The levers 11 may be rocked through a common thrust ring moved axially by hydraulic pneumatic or mechanical means extending through the shaft 10. The diaphragm may be mounted by its outer periphery in the wall of the valve casing and the butterfly valve may have an interrupted sealing ring.
GB1218259A 1959-04-10 1959-04-10 Improvements in and relating to butterfly valves Expired GB880835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1218259A GB880835A (en) 1959-04-10 1959-04-10 Improvements in and relating to butterfly valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1218259A GB880835A (en) 1959-04-10 1959-04-10 Improvements in and relating to butterfly valves

Publications (1)

Publication Number Publication Date
GB880835A true GB880835A (en) 1961-10-25

Family

ID=9999840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1218259A Expired GB880835A (en) 1959-04-10 1959-04-10 Improvements in and relating to butterfly valves

Country Status (1)

Country Link
GB (1) GB880835A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817355A1 (en) * 1977-04-27 1978-12-21 Huebner Vamag Metal sealing ring for cut=off valve - has hollow conical plate providing radial elasticity upon contact with tapered annular valve seat
GB2182118A (en) * 1985-09-24 1987-05-07 Schertler Siegfried A butterfly valve
GB2206398A (en) * 1987-06-29 1989-01-05 Akira Oshima Seal system for butterfly valves

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817355A1 (en) * 1977-04-27 1978-12-21 Huebner Vamag Metal sealing ring for cut=off valve - has hollow conical plate providing radial elasticity upon contact with tapered annular valve seat
GB2182118A (en) * 1985-09-24 1987-05-07 Schertler Siegfried A butterfly valve
GB2182118B (en) * 1985-09-24 1989-09-06 Schertler Siegfried A butterfly valve
GB2206398A (en) * 1987-06-29 1989-01-05 Akira Oshima Seal system for butterfly valves
GB2206398B (en) * 1987-06-29 1991-05-29 Akira Oshima Improvements in and relating to butterfly valves

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