WO1994001706B1 - Valve assembly with backflow prevention and atmospheric vacuum breaker devices - Google Patents
Valve assembly with backflow prevention and atmospheric vacuum breaker devicesInfo
- Publication number
- WO1994001706B1 WO1994001706B1 PCT/AU1993/000345 AU9300345W WO9401706B1 WO 1994001706 B1 WO1994001706 B1 WO 1994001706B1 AU 9300345 W AU9300345 W AU 9300345W WO 9401706 B1 WO9401706 B1 WO 9401706B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- inlet
- outlet
- valve assembly
- way valve
- Prior art date
Links
- 230000002265 prevention Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract 18
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 13
- 230000000903 blocking Effects 0.000 claims 4
- 239000000463 material Substances 0.000 claims 1
- 230000000712 assembly Effects 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
Abstract
This invention relates to valve assemblies and particularly to valve assemblies adapted to prevent backflow which also incorporate an atmospheric vacuum breaker. The most basic arrangement involves a vacuum breaker device (16, 28) which comprises an integral non-return valve located upstream of a user operable valve control means (21) wherein the non-return valve of the vacuum breaker device is biased to close against the flow of fluid from the supply (Fig. 14). The second of these variations shows a vacuum breaker device comprising an integral non-return valve located upstream of the valve assembly outlet wherein the non-return valve is biased closed but which is limited in its movement to allow flow of fluid through the valve assembly by a user operable valve control means (Fig. 7). The third of these variations comprises the addition of a second non-return valve (17) upstream of the vacuum breaker device (Fig. 13). The fourth of these arrangements is conceptually identical to the third arrangement but offers an alternative construction (Fig. 12). The fifth of these arrangements shows a vacuum breaker device upstream of the valve assembly outlet and a second non-return valve further downstream wherein the second non-return valve is biased closed to allow flow through the valve assembly by a user operable valve control means (Fig. 16). Other arrangements for a ball valve (Fig. 22) and various bib-cocks (Figs. 23-34) are also described.
Claims
1. A valve assembly comprising a housing having a flow passage, inlet and outlet portions and through which fluid passes downstream from said inlet to said outlet, a flow control means located intermediate of said inlet and outlet, a first one-way valve located upstream of said flow control means for blocking the passage of fluid flowing from said outlet to said inlet but allowing fluid to flow from said inlet to said outlet, a vacuum break means located upstream of said flow control means comprising at least one vent to atmosphere from said flow passage and a vacuum break valve to open and close said vent, said vacuum break valve controlled by the resultant forces acting on the upstream and downstream sides of the vacuum break valve wherein said first one-way valve and said vacuum break means operate independently of each other.
2. A valve assembly comprising a housing having a flow passage, inlet and outlet portions and through which fluid passes downstream from said inlet to said outlet, a first one-way valve located intermediate of said outlet and inlet for blocking the passage of fluid flowing from said outlet to said inlet but allowing fluid to flow from said inlet to said outlet, a vacuum break means located intermediate of said outlet and inlet such that said first one-way valve and said vacuum break means operate independently of each other, said vacuum break means comprising at least one vent to atmosphere from said flow passage and a vacuum break valve to open and close said vent, said vacuum break valve controlled by the resultant forces acting on the upstream and downstream sides of the vacuum break valve. 37
a first one-way valve flow control means to variably limit the opening of said first one-way valve to control the flow and so arranged that it does not limit the movement of said vacuum break valve.
3. A valve assembly according to claim 1 comprising a second one-way valve upstream of said flow control means.
4. A valve assembly according to claim 2 comprising a second one-way valve upstream of said first one-way valve.
5. A valve assembly according to claim 1 comprising a second one-way valve downstream of said flow control means.
6. A valve assembly according to claim 2 comprising a second one-way valve downstream of said first one-way valve.
7. A valve assembly comprising a housing having a flow passage, inlet and outlet portions and through which fluid passes downstream from said inlet to said outlet, a second one-way valve located intermediate said inlet and outlet for blocking the passage of fluid flowing from said inlet to said outlet but allowing fluid to flow from said inlet to said outlet, a second one-way valve flow control means to variably limit the opening of said second one-way valve to control the flow, a first one-way valve located upstream of said second one-way valve for blocking the passage of fluid flowing from said outlet to said inlet but allowing fluid to flow from said inlet to said outlet, a vacuum break means located upstream of said second one-way valve comprising at least one vent to atmosphere from said flow passage and a vacuum break valve to open and close said vent, said vacuum break valve controlled by the resultant forces acting on the upstream and downstream sides of the vacuum break valve wherein said first one-way valve and said vacuum break means operate independently of each other.
8. A valve assembly according to claim 1 wherein said flow control means comprises a spindle rotatable by a user of said valve assembly to continuously variably limit the opening of said flow control means.
9. A valve assembly according to claim 2 wherein said first one-way valve flow control means comprises a spindle rotatable by a user of said valve assembly to continuously variably limit the opening of said first one-way valve.
10. A valve assembly according to claim 7 wherein said second one-way valve flow control means comprises a spindle rotatable by a user of said valve assembly to continuously variably limit the opening of said second one-way valve.
11. A valve assembly according to claim 8 wherein said flow control means comprises a jumper valve comprising a head portion and a shaft portion, wherein said shaft portion is arranged to slidably fit within an internal bore of said spindle, whereby, independent of the position of said spindle said jumper valve is moveable to block the passage of fluid flowing from the outlet towards the inlet.
12. A valve assembly according to claim 9 wherein said flow control means comprises a jumper valve comprising a head portion and a shaft portion, wherein said shaft portion is arranged to slidably fit within an internal bore of said spindle, whereby, independent of the position of said spindle said jumper valve is moveable to block the passage of fluid flowing from the outlet towards the inlet. 39
13. A valve assembly according to claim 10 wherein said second one-way valve comprises a jumper valve comprising a head portion and a shaft portion, wherein said shaft portion is arranged to slidably fit within an internal bore of said spindle whereby, independent of the position of said spindle, said jumper valve is moveable to block the passage of fluid flowing from the outlet towards the inlet.
14. A valve assembly according to claims 11, 12 and 13 wherein said jumper valve comprises a shaft sized to slidably fit within an internal bore of said spindle, said shaft further comprising a fluid communications means which allows fluid to communicate between said flow passage and said internal bore in said spindle.
15. A valve assembly according to claim 14 wherein said jumper valve is biased away from said spindle by a biasing means located internal to said spindle bore.
16. A valve assembly according to claim 14 wherein said jumper valve is biased away from said spindle by a biasing means located external to said spindle bore.
17. A valve assembly according to claim 1 wherein said housing comprises at least two connectable parts.
18. A valve assembly according to claim 17 wherein a first connectable part of said housing contains said flow control means and a second connectable part of said housing contains said vacuum break means and first one-way valve.
19. A valve assembly according to claim 7 wherein said housing comprises at least two connectable parts. 40
20. A valve assembly according to claim 19 wherein a first connectable part of said housing contains said second one-way valve flow control means and a second connectable part of said housing contains said vacuum break means and first one¬ way valve.
21. A valve assembly according to all preceding claims wherein said vacuum breaker valve comprises a diaphragm.
22. A valve assembly according to claim 21 wherein said diaphragm is biased into a position which in use is adapted to lie in its least stressed position most when said vacuum breaker valve is closed.
23. A valve assembly according to claims 1 to 20 wherein said vacuum breaker valve comprises an annular valve member formed of flexible material positioned to move so as to close and open said at least one vent and having a central aperture through which said first one-way valve is located and operable to permit flow from the inlet to the outlet and stop flow from the outlet to the inlet through said central aperture.
41
STATEMENT UNDER ARTICLE 19
Amendments accompanying the attached letter and replacement pages 33 to 35b comprise new claims 1 to 23 which replace old claims 1 to 15. These claims have been amended to overcome lack of novelty aspects highlighted by a number of the citations contained within the International Search Report dated 2nd November 1993.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU45477/93A AU4547793A (en) | 1992-07-10 | 1993-07-12 | Valve assembly with backflow prevention and atmospheric vacuum breaker devices |
| GB9500249A GB2283300A (en) | 1992-07-10 | 1993-07-12 | Valve assembly with backflow prevention and atmospheric vacuum breaker devices |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPL343992 | 1992-07-10 | ||
| AUPL3439 | 1992-07-10 | ||
| AUPL5036 | 1992-09-25 | ||
| AUPL503692 | 1992-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994001706A1 WO1994001706A1 (en) | 1994-01-20 |
| WO1994001706B1 true WO1994001706B1 (en) | 1994-03-03 |
Family
ID=25644289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AU1993/000345 WO1994001706A1 (en) | 1992-07-10 | 1993-07-12 | Valve assembly with backflow prevention and atmospheric vacuum breaker devices |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2283300A (en) |
| WO (1) | WO1994001706A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2295883B (en) * | 1994-10-24 | 1999-04-07 | Mangar International Ltd | Pneumatic valve |
| AUPQ125699A0 (en) * | 1999-06-29 | 1999-07-22 | Water Corporation, The | A hydrant valve |
| GB2353582A (en) * | 1999-08-27 | 2001-02-28 | Trevor Wootton | Non-return tap with integral quick-connect fitting for hose |
| KR200190173Y1 (en) * | 1999-11-22 | 2000-07-15 | 주식회사투원 | A water saving apparatus using foot-valve type |
| AU2007100374B9 (en) * | 2006-05-08 | 2012-07-05 | Australian Valve Group Pty Ltd | Fluid Flow Control Device |
| CN102272503A (en) * | 2008-11-26 | 2011-12-07 | 盖瑞·尤戴尔 | A water discharge device |
| SE541086C2 (en) | 2015-07-02 | 2019-04-02 | 3Eflow Ab | A dampening valve unit |
| DE102017129283B4 (en) * | 2017-12-08 | 2020-06-18 | Thomas Funk | Fluid delivery system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU523246B2 (en) * | 1977-09-13 | 1982-07-22 | James Martin Michael | Lift valve-type tap |
| GB1602193A (en) * | 1978-05-25 | 1981-11-11 | Barking Grohe Ltd | Water fittings including anti-syphon devices |
| US4287905A (en) * | 1980-04-10 | 1981-09-08 | Gilberto Iglesias | Anti-backflow valve for a faucet |
| GB8503057D0 (en) * | 1985-02-07 | 1985-03-13 | Wigley A F | Stop valves |
| GB2181819A (en) * | 1985-10-19 | 1987-04-29 | Bjorn Johan Erik Andersson | Valve |
| IT1202578B (en) * | 1987-02-20 | 1989-02-09 | Pettinaroli Spa | TAP WITH CHECK VALVES AND PRESSURE COMPOSER DEVICE |
| AU6831490A (en) * | 1990-01-09 | 1991-07-11 | Gsa Industries (Aust.) Pty Ltd | Improved tap |
| GB2246837B (en) * | 1990-08-08 | 1994-05-18 | Opella Holdings Limited | Tap |
| AU654849B2 (en) * | 1991-02-26 | 1994-11-24 | Bards Pty Ltd | Assembly for prevention of backflow in valves |
-
1993
- 1993-07-12 WO PCT/AU1993/000345 patent/WO1994001706A1/en active Application Filing
- 1993-07-12 GB GB9500249A patent/GB2283300A/en not_active Withdrawn
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