GB900875A - Check valve - Google Patents
Check valveInfo
- Publication number
- GB900875A GB900875A GB3838459A GB3838459A GB900875A GB 900875 A GB900875 A GB 900875A GB 3838459 A GB3838459 A GB 3838459A GB 3838459 A GB3838459 A GB 3838459A GB 900875 A GB900875 A GB 900875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- skirt
- corrugation
- valve
- flange
- annular member
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
-
- 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
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Check Valves (AREA)
Abstract
900,875. Valves. SIERRA ENGINEERING CO. Nov. 12, 1959, No.38384/59. Class 135. A check valve incorporates a housing 10, Fig. 3, between a flange 35 of which and a ring 351 is clamped a diaphragm 20, with its inner periphery secured to one end of a sleeve 22, the interior of which engages a bead 19 in the housing 10. The other sleeve end embodies a flange 26 and four spiders with ports 29 therebetween, the flange 26 being engaged by an annular knife edge 33 on a bonnet 30 bolted to the housing. A rubber or plastic valve closure 40 has a central boss 41 with a stem 42, a grooved part 43 of which is located in a hub 44 of the sleeve 22; the boss periphery is joined to a corrugation 46 which supports an annular member 47, with an inturned skirt 48 of thicker material than the corrugation, the circumference of the skirt normally abutting the flange 26 to close the valve. When fluid in the inlet 49 impinges on the closure 40 the parts 47, 48 move to the position shown in dotted lines to open the valve due to flexure of the corrugation 46; an increase in fluid pressure causes a greater opening of the valve by flexure of the member 47 and skirt 48 in a downstream direction. In a modification, the annular member and skirt may be of graduated thickness and are connected to the boss by a double corrugation; the annular member and skirt may flex sequentially as the pressure increases. In another modification, the central boss 65, Fig. 5, which has a valve stem opening 66, is surrounded by an arcuate annular member 67 connected by a corrugation 68 to an arcuate skirt 69.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3838459A GB900875A (en) | 1959-11-12 | 1959-11-12 | Check valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3838459A GB900875A (en) | 1959-11-12 | 1959-11-12 | Check valve |
Publications (1)
Publication Number | Publication Date |
---|---|
GB900875A true GB900875A (en) | 1962-07-11 |
Family
ID=10403129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3838459A Expired GB900875A (en) | 1959-11-12 | 1959-11-12 | Check valve |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB900875A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2001151A (en) * | 1977-06-24 | 1979-01-24 | Fischer Ag Georg | Unidirectional valve |
EP0182550A2 (en) * | 1984-11-13 | 1986-05-28 | Avon Industrial Polymers Limited | Valve for respirator |
WO1999028615A1 (en) * | 1997-11-28 | 1999-06-10 | Robert Bosch Gmbh | Control valve for a jet pump |
CN102042430A (en) * | 2010-12-03 | 2011-05-04 | 浙江盾安阀门有限公司 | Pressure-reducing backflow preventer |
WO2021021563A1 (en) | 2019-07-26 | 2021-02-04 | Espervita Therapeutics, Inc. | Functionalized long-chain hydrocarbon mono- and di-carboxylic acids useful for the prevention or treatment of disease |
-
1959
- 1959-11-12 GB GB3838459A patent/GB900875A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2001151A (en) * | 1977-06-24 | 1979-01-24 | Fischer Ag Georg | Unidirectional valve |
GB2001151B (en) * | 1977-06-24 | 1982-01-27 | Fischer Ag Georg | Unidirectional valve |
EP0182550A2 (en) * | 1984-11-13 | 1986-05-28 | Avon Industrial Polymers Limited | Valve for respirator |
EP0182550A3 (en) * | 1984-11-13 | 1987-01-07 | Avon Industrial Polymers Limited | Valve for respirator |
US4958633A (en) * | 1984-11-13 | 1990-09-25 | Avon Industrial Polymers Limited | Valve for respirator |
WO1999028615A1 (en) * | 1997-11-28 | 1999-06-10 | Robert Bosch Gmbh | Control valve for a jet pump |
CN102042430A (en) * | 2010-12-03 | 2011-05-04 | 浙江盾安阀门有限公司 | Pressure-reducing backflow preventer |
CN102042430B (en) * | 2010-12-03 | 2012-07-04 | 浙江盾安阀门有限公司 | Pressure-reducing backflow preventer |
WO2021021563A1 (en) | 2019-07-26 | 2021-02-04 | Espervita Therapeutics, Inc. | Functionalized long-chain hydrocarbon mono- and di-carboxylic acids useful for the prevention or treatment of disease |
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