ZA746432B - Backflow prevention apparatus - Google Patents
Backflow prevention apparatusInfo
- Publication number
- ZA746432B ZA746432B ZA00746432A ZA746432A ZA746432B ZA 746432 B ZA746432 B ZA 746432B ZA 00746432 A ZA00746432 A ZA 00746432A ZA 746432 A ZA746432 A ZA 746432A ZA 746432 B ZA746432 B ZA 746432B
- Authority
- ZA
- South Africa
- Prior art keywords
- backflow prevention
- prevention apparatus
- backflow
- prevention
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
- E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
- E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
-
- 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
- F16K15/02—Check valves with guided rigid valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41017373A | 1973-10-26 | 1973-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA746432B true ZA746432B (en) | 1976-06-30 |
Family
ID=23623549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00746432A ZA746432B (en) | 1973-10-26 | 1974-10-09 | Backflow prevention apparatus |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5083819A (xx) |
BR (1) | BR7408966D0 (xx) |
CA (1) | CA1066164A (xx) |
DE (1) | DE2450465A1 (xx) |
FR (2) | FR2250939B1 (xx) |
GB (1) | GB1490553A (xx) |
IL (1) | IL45802A (xx) |
ZA (1) | ZA746432B (xx) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3996962A (en) * | 1976-03-19 | 1976-12-14 | Rockwell International Corporation | Backflow preventer and relief valve assembly |
US4185656A (en) * | 1977-12-13 | 1980-01-29 | Braukmann Armaturen Ag | Dual check valve structure |
US4232704A (en) * | 1978-03-28 | 1980-11-11 | Amtrol Inc. | In line back flow preventer |
US4241752A (en) * | 1978-05-30 | 1980-12-30 | Watts Regulator Company | Backflow preventer |
US4231387A (en) * | 1979-01-11 | 1980-11-04 | Chas. M. Bailey Co., Inc. | Backflow preventing valve |
DE3322771A1 (de) * | 1983-06-24 | 1985-01-03 | Alfred Teves Gmbh, 6000 Frankfurt | Ventilanordnung zur begrenzung des drucks in einem drucksystem |
DE3742207A1 (de) * | 1987-12-12 | 1989-06-22 | Lang Apparatebau Gmbh | Rueckflussverhinderer, insbesondere zum einbau in trinkwasserleitungen |
DE3936962A1 (de) * | 1989-11-07 | 1991-05-08 | Waletzko Armaturen Gmbh | Rueckflussverhinderer, insbesondere zum einbau in trinkwasserleitungen |
US5226441A (en) * | 1989-11-13 | 1993-07-13 | Cmb Industries | Backflow preventor with adjustable outflow direction |
US5107888A (en) * | 1989-11-13 | 1992-04-28 | Cmb Industries, Inc. | N-shaped backflow preventor |
US5046525A (en) * | 1990-06-15 | 1991-09-10 | Ames Company, Inc. | Differential loading fluid check valve |
DE4309085C1 (de) * | 1993-03-20 | 1995-01-05 | Schubert & Salzer Ag | Systemtrenner |
JP3016993U (ja) * | 1995-04-14 | 1995-10-17 | 株式会社タブチ | 複式逆止型自在継ぎ手 |
DE29605420U1 (de) * | 1996-03-23 | 1996-06-13 | Festo Kg, 73734 Esslingen | Schnellentlüftungsventil für pneumatische Anwendungen |
DE10201626A1 (de) | 2002-01-16 | 2003-07-31 | Wildfang Dieter Gmbh | Sperrventil |
DE202004016530U1 (de) * | 2004-10-25 | 2006-03-02 | Gebr. Kemper Gmbh & Co. Kg Metallwerke | Rohrbelüfter und Absperrarmatur einer Wasserinstallation mit Rohrbelüfter |
JP5189399B2 (ja) | 2008-04-07 | 2013-04-24 | 国立大学法人信州大学 | 逆止弁 |
JP5189403B2 (ja) * | 2008-05-08 | 2013-04-24 | 国立大学法人信州大学 | 逆流防止装置 |
CN103742390B (zh) * | 2013-11-28 | 2015-10-28 | 成都欧浦特控制阀门有限公司 | 一种设置有伸缩弹簧的气泵 |
CN103697198B (zh) * | 2013-12-24 | 2016-06-22 | 泉州市沪航阀门制造有限公司 | 压差原理倒流防止器的双室控制机构 |
ES2924634T3 (es) * | 2018-03-12 | 2022-10-10 | Ishizaki Co Ltd | Válvula de retención y cuerpo oscilante para válvula de retención |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1710635A (en) * | 1924-08-06 | 1929-04-23 | Mortimer C Rosenfeld | Valve |
US3283772A (en) * | 1964-02-04 | 1966-11-08 | Donald G Griswold | Backflow prevention device with improved pressure sensing means |
-
1974
- 1974-10-07 IL IL45802A patent/IL45802A/en unknown
- 1974-10-09 ZA ZA00746432A patent/ZA746432B/xx unknown
- 1974-10-24 DE DE19742450465 patent/DE2450465A1/de not_active Ceased
- 1974-10-25 FR FR7435902A patent/FR2250939B1/fr not_active Expired
- 1974-10-25 GB GB46301/74A patent/GB1490553A/en not_active Expired
- 1974-10-25 CA CA212,300A patent/CA1066164A/en not_active Expired
- 1974-10-25 BR BR8966/74A patent/BR7408966D0/pt unknown
- 1974-10-26 JP JP49123862A patent/JPS5083819A/ja active Pending
-
1975
- 1975-04-22 FR FR7512553A patent/FR2257834B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2250939B1 (xx) | 1978-08-11 |
IL45802A (en) | 1977-05-31 |
IL45802A0 (en) | 1975-03-13 |
CA1066164A (en) | 1979-11-13 |
DE2450465A1 (de) | 1975-04-30 |
AU7418174A (en) | 1976-04-15 |
BR7408966D0 (pt) | 1975-09-23 |
FR2250939A1 (xx) | 1975-06-06 |
JPS5083819A (xx) | 1975-07-07 |
FR2257834A1 (xx) | 1975-08-08 |
FR2257834B1 (xx) | 1979-10-05 |
GB1490553A (en) | 1977-11-02 |
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