GB994874A - Improvements in butterfly valves - Google Patents

Improvements in butterfly valves

Info

Publication number
GB994874A
GB994874A GB3475960A GB3475960A GB994874A GB 994874 A GB994874 A GB 994874A GB 3475960 A GB3475960 A GB 3475960A GB 3475960 A GB3475960 A GB 3475960A GB 994874 A GB994874 A GB 994874A
Authority
GB
United Kingdom
Prior art keywords
ring
periphery
shaft
rim
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.)
Expired
Application number
GB3475960A
Inventor
George Aubrey Felton
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 GB3475960A priority Critical patent/GB994874A/en
Publication of GB994874A publication Critical patent/GB994874A/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)
  • Sealing Devices (AREA)

Abstract

994,874. Valves. BOVING & CO. Ltd. Sept. 28, 1961 [Oct. 11, 1960], No. 34759/60. Heading F2V. The shaft 3, Fig. 3, of a butterfly valve is offset from the plane of the valve rim and may be actuated from a hand wheel through a gearbox. The valve rim is provided with a continuous flat-packing ring 4 held by a clamping member 5, which ring 4 coacts with a seat annulus 7; the ring 4 is of flexible natural or synthetic rubber which may be laminated with textile reinforcement, the ring periphery 11 being of frusto-conical form. The angle A of the ring periphery is equal to the angle B by which the shaft axis is offset from the plane of the butterfly rim so that a mean perpendicular C from the periphery 11 bisects the shaft axis at D, which perpendicular defines the radius of the spherical surface 12, Fig. 4, of the annulus 7 that is centred on D, which latter is positioned mid-way along the shaft 3. The periphery 11 meets the surface 12 chordwise, so providing two line-contact sealing-lips 13, 14 which deflect under fluid pressure to enhance the sealing effect.
GB3475960A 1960-10-11 1960-10-11 Improvements in butterfly valves Expired GB994874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3475960A GB994874A (en) 1960-10-11 1960-10-11 Improvements in butterfly valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3475960A GB994874A (en) 1960-10-11 1960-10-11 Improvements in butterfly valves

Publications (1)

Publication Number Publication Date
GB994874A true GB994874A (en) 1965-06-10

Family

ID=10369613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3475960A Expired GB994874A (en) 1960-10-11 1960-10-11 Improvements in butterfly valves

Country Status (1)

Country Link
GB (1) GB994874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2674599A1 (en) * 1991-03-29 1992-10-02 Guichon International Butterfly valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2674599A1 (en) * 1991-03-29 1992-10-02 Guichon International Butterfly valve

Similar Documents

Publication Publication Date Title
GB993536A (en) Butterfly valve
GB996104A (en) Valve for controlling fluid flow
GB1048023A (en) Rotatable ball valve construction
GB1449577A (en) Valves having a stem seal
GB1346123A (en) Ball valve for fluid control
GB1302440A (en)
GB1264686A (en)
GB1397063A (en) Butterfly valve
FR2436924A1 (en) RING SEAL FOR BUTTERFLY VALVES, ESPECIALLY FOR CRYOGENIC FLUIDS
GB759111A (en) Improvements in or relating to valve with deformable seat
GB971318A (en) Improvements in or relating to shut-off valves
GB1025884A (en) Improvements in and relating to joint sealing rings
GB1006377A (en) Improvements in and relating to butterfly valves
GB994874A (en) Improvements in butterfly valves
GB1015412A (en) Improvements in and relating to resilient sealing rings for fluid valves
GB993971A (en) Fluid control taps or valves
GB990176A (en) Means for preventing return flow in liquid pipes or mains
ES253796U (en) Valves
GB1354260A (en) Valve and/or stopcock in fluid circuits
GB746909A (en) Improvements in or relating to butterfly valves
GB1097645A (en) Improvements in or relating to fluid-flow control valves
GB985164A (en) Improvements in or relating to butterfly valves
GB791607A (en) Improvements in or relating to fluid control valves
GB1113982A (en) Improvements in or relating to fluid valves
GB1428850A (en) Damper arrangement