GB689303A - Improvements in or relating to butterfly valves - Google Patents

Improvements in or relating to butterfly valves

Info

Publication number
GB689303A
GB689303A GB328/52A GB32852A GB689303A GB 689303 A GB689303 A GB 689303A GB 328/52 A GB328/52 A GB 328/52A GB 32852 A GB32852 A GB 32852A GB 689303 A GB689303 A GB 689303A
Authority
GB
United Kingdom
Prior art keywords
valve
air
butterfly
openings
drawn
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
GB328/52A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB689303A publication Critical patent/GB689303A/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
    • F16K1/222—Shaping of the valve member
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • E02B9/02—Water-ways
    • E02B9/022—Closures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Valves (AREA)
  • Lift Valve (AREA)

Abstract

689,303. Butterfly valves. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 4, 1952 [Feb. 12, 1951], No. 328/52. Class 135. The downstream face 6 of a butterfly valve controlling a liquid flow is provided with openings 15 through which air at atmospheric or greater pressure can reach the cavity usually present on the downstream side of such a valve in order to stabilise the cavitation and so prevent the valve suffering the shocks engendered by the periodical collapse of the cavity. As shown, the interior of the valve is provided with a sleeve secured at its ends to a hollow spindle through which the air is drawn or blown, and the air passes to the openings 15 through coincident ports in the sleeve and the spindle. A check valve in the air supply line prevents liquid being drawn into that line should the pressure rise on the downstream side of the butterfly valve.
GB328/52A 1951-02-12 1952-01-04 Improvements in or relating to butterfly valves Expired GB689303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US689303XA 1951-02-12 1951-02-12

Publications (1)

Publication Number Publication Date
GB689303A true GB689303A (en) 1953-03-25

Family

ID=22085618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB328/52A Expired GB689303A (en) 1951-02-12 1952-01-04 Improvements in or relating to butterfly valves

Country Status (1)

Country Link
GB (1) GB689303A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125248A (en) * 1976-09-25 1978-11-14 Kazuhiko Nakajima Butterfly valve
US4508272A (en) * 1982-09-28 1985-04-02 Lincoln Thompson Hose end spray nozzle
US4917152A (en) * 1989-08-14 1990-04-17 Decker William T Fluid injector
CN106015601A (en) * 2016-08-04 2016-10-12 成都迪川科技发展有限公司 Rotary reflux valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125248A (en) * 1976-09-25 1978-11-14 Kazuhiko Nakajima Butterfly valve
US4508272A (en) * 1982-09-28 1985-04-02 Lincoln Thompson Hose end spray nozzle
US4917152A (en) * 1989-08-14 1990-04-17 Decker William T Fluid injector
CN106015601A (en) * 2016-08-04 2016-10-12 成都迪川科技发展有限公司 Rotary reflux valve

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