CH491369A - Backflow preventer - Google Patents
Backflow preventerInfo
- Publication number
- CH491369A CH491369A CH667768A CH667768A CH491369A CH 491369 A CH491369 A CH 491369A CH 667768 A CH667768 A CH 667768A CH 667768 A CH667768 A CH 667768A CH 491369 A CH491369 A CH 491369A
- Authority
- CH
- Switzerland
- Prior art keywords
- backflow preventer
- preventer
- backflow
- Prior art date
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
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/145—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements being shaped as a solids of revolution, e.g. cylindrical or conical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH667768A CH491369A (en) | 1968-05-06 | 1968-05-06 | Backflow preventer |
NL6807605A NL6807605A (en) | 1968-05-06 | 1968-05-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH667768A CH491369A (en) | 1968-05-06 | 1968-05-06 | Backflow preventer |
Publications (1)
Publication Number | Publication Date |
---|---|
CH491369A true CH491369A (en) | 1970-05-31 |
Family
ID=4313286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH667768A CH491369A (en) | 1968-05-06 | 1968-05-06 | Backflow preventer |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH491369A (en) |
NL (1) | NL6807605A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064331A1 (en) * | 1981-05-02 | 1982-11-10 | United Gas Industries Plc | Gas meters |
WO1983002320A1 (en) * | 1981-12-21 | 1983-07-07 | Lionel Ivor Alfred Taylor | Improvements in non-return valves |
-
1968
- 1968-05-06 CH CH667768A patent/CH491369A/en not_active IP Right Cessation
- 1968-05-29 NL NL6807605A patent/NL6807605A/xx unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064331A1 (en) * | 1981-05-02 | 1982-11-10 | United Gas Industries Plc | Gas meters |
WO1983002320A1 (en) * | 1981-12-21 | 1983-07-07 | Lionel Ivor Alfred Taylor | Improvements in non-return valves |
Also Published As
Publication number | Publication date |
---|---|
NL6807605A (en) | 1969-11-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |