GB689303A - Improvements in or relating to butterfly valves - Google Patents
Improvements in or relating to butterfly valvesInfo
- 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
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.
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)
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 |
-
1952
- 1952-01-04 GB GB328/52A patent/GB689303A/en not_active Expired
Cited By (4)
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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