WO2004070125A1 - Improved mains pressure flusher valve - Google Patents
Improved mains pressure flusher valve Download PDFInfo
- Publication number
- WO2004070125A1 WO2004070125A1 PCT/AU2004/000130 AU2004000130W WO2004070125A1 WO 2004070125 A1 WO2004070125 A1 WO 2004070125A1 AU 2004000130 W AU2004000130 W AU 2004000130W WO 2004070125 A1 WO2004070125 A1 WO 2004070125A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- pressure valve
- mains pressure
- downstream
- flow controller
- 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
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
- E03D3/02—Self-closing flushing valves
- E03D3/04—Self-closing flushing valves with piston valve and pressure chamber for retarding the valve-closing movement
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/3149—Back flow prevention by vacuum breaking [e.g., anti-siphon devices]
- Y10T137/3185—Air vent in liquid flow line
- Y10T137/3294—Valved
- Y10T137/3331—With co-acting valve in liquid flow path
Definitions
- the invention relates to an improvement to a mains pressure valve for direct connection to a mains pressure water system which, upon activation, will deliver a predetermined volume of water.
- the invention has particular, but not exclusive, application to flusher valves.
- valves of this type are typically used to control the supply of water to a toilet to avoid the need to use header tanks.
- the valves can be connected directly to the mains pressure network, and can then deliver water directly from a mains pressure network to a toilet, while meeting the necessary safety requirements (eg, preventing any backflow of water into the mains pressure network).
- Some known valves used to fill this need have required specially adapted plumbing (such as larger diameter pipes, pressure regulators and extra valves) for their proper operation.
- Such valves have also typically been large and cumbersome and difficult (therefore expensive) to install.
- a mains pressure valve that includes (a) a main chamber having an inlet for fluid, an outlet for fluid and an upper portion; (b) a non-return valve located downstream of the outlet and adapted to provide resistance to fluid flowing therethrough; (c) a piston located in the main chamber which is movable into and out of sealing engagement with the outlet of the main chamber and having an internal passageway which communicates between the upper portion of the main chamber and the inlet; (d) a port in the upper portion of the main chamber above the piston which permits fluid to flow therethrough; and (e) a control valve associated with the port to regulate the flow of fluid through the port.
- bypass passageway typically leads from the control valve (which could be an electronic solenoid-controlled valve, or a manual valve actuator) down beside (at its downstream portion), but separate from, the main chamber and has an outlet just above the upstream end or mouth of the non-return valve. Fluid exiting the bypass passageway's outlet then flows into and through the non-return valve.
- the control valve which could be an electronic solenoid-controlled valve, or a manual valve actuator
- the bypass passageway would typically lead from the solenoid to the top of the valve where it would join the portion integral with the valve which runs down in parallel with the main chamber.
- this passageway is identified by reference numeral 41 in Figure 1 of PCT ⁇ /VO93/16240, and the downstream portion by numeral 13 in Numeral 3 of that specification.
- Such valves also contain air-vents.
- the principal purpose of the air vent is to permit entry of air into or adjacent the discharge chamber downstream of the outlet so that water discharged continued to flow away from the valve and was not held by reason of air not being able to enter the downpipe upon flow of the fluid when the valve had recently closed.
- the air breaks, or air-vents are formed by openings in the top of the downpipe, where it abuts an outer surface of the non-return valve. These small gaps are fluidly connected to slots in the outer or flush-pipe nut, which affixes the valve to the top of the downpipe/flush-pipe.
- valves worked well, but over time some aspects of operation of the valve were seen to be undesirably impaired. In particular, it was observed in some installations that sometimes the full volume of water was not delivered by valves of this type upon actuation. It was found that this could be caused by excessive pressure in the bypass passageway, which could be generated because fluid flowing out through the outlet and into the discharge chamber would not permit fluid to exit from the bypass passageway. As a result, there was increased resistance to the rising of the piston, which therefore continued to more significantly obstruct the passage of fluid from the inlet to the outlet.
- a mains, pressure valve including: (a) a body defining a main chamber having an inlet for fluid, an outlet for fluid and a control portion; (b) a main valve component located in the main chamber which is movable into and out of sealing engagement with the outlet of the main chamber and defining a passageway which provides fluid communication between the inlet and the control portion of the main chamber ; (c) a flow controller located downstream of and communicating with the outlet; (d) a bypass passageway having an upstream end from the control portion of the main chamber and a downstream end; (e) a control valve to control the flow of fluid through the by-pass passageway to control the operation of the mains pressure valve, wherein the downstream end of the bypass passageway is downstream of the flow controller.
- the flow controller may be in the form of a non-return valve.
- the non-return valve is an elastomeric valve having an open mouth at its upstream end leading to converging walls, which meet at its downstream end.
- a valve is known as a duckbill check valve.
- the converging walls substantially seal the downstream end of the non-return valve to largely prevent fluid flowing from outside the downstream end of the non-return valve into the nonreturn valve.
- the elastomeric converging walls are forced apart, thus creating an opening at the downstream end of the valve for the fluid to exit.
- the walls are elastomeric, they can absorb different volumes of fluid flowing through the non-return valve by stretching more where the fluid flow is greater. Further, by reason of fluid in the non-return valve providing the necessary force to open the downstream end of the non-return valve to permit fluid to flow through the non-return valve, the non-return valve provides resistance to fluid flowing through it. This can assist in slowing the closing of the main valve component so that it closes smoothly when the predetermined volume of fluid has passed through the valve. In part, this is achieved by increasing pressure within the valve in the vicinity of the outlet which helps force fluid through the internal passageway into the control portion of the main chamber.
- other non-return valves can also be used with the invention.
- the flow controller need not be in the form of a non-return valve or need not be the sole means of performing the non-return function which is the fundamental requirement that fluid downstream of the non-return valve (for example, fluid in the flush-pipe) cannot flow back through the valve and re-enter the mains pressure system (where, for example, it may contaminate drinking water).
- Other means may be provided which performs or assists with this function.
- the valve includes a flush pipe nut adaptor which holds the flow controller adjacent the outlet of the valve, and which surrounds the flow controller.
- the flow controller could, of course, be held in place by any other means known to one skilled in the art.
- this flush pipe nut adaptor has one or more openings in it, in communication with the downstream end of the bypass passageway. Preferably, it also has an external, circumferential, annular recess or groove of greater width than the diameter of the openings, the openings being located within this recess or groove.
- the downstream end of the bypass passageway is adjacent the recess or groove following installation of the valve.
- fluid flowing down the bypass passageway flows from the downstream end of the bypass passageway to the external recess or groove of the flush pipe nut adaptor, through the openings and ultimately to the pipe which would, in use, be connected for conveying the water downstream of the mains flush valve (eg, to a toilet).
- the pressure of any fluid inside (ie, upstream of) the non-return valve has no effect on the pressure of fluid inside the bypass passageway. Surprisingly, it was found that this significantly improved the reliability and consistency of performance of the mains pressure valve.
- vents are provided downstream of the flow controller. These vents may be level with the downstream end of the flow controller. Further, the vents may be shielded from the downstream end of the flow controller. These vents in the form of air vents may be located in the main or flush- pipe nut affixing the downpipe to the valve. To shield the vents from water discharged from the flow controller exiting the downpipe via the vents, the flush pipe nut adaptor has an annular projecting rim from its downstream end which extends past the air-vents. The nut adaptor thus guides fluid discharged from the flow controller past the air-vents and the rim helps avoid “splashes” escaping through the air-vents.
- Both the flush pipe nut adaptor and the nut may be made of a hard material, usually metal, preferably an alloy such as brass.
- the at least one vent also serves as back flow prevention should a negative pressure exist in the body of the valve. On this condition, air will be drawn through the at least one vent thus serving as back-flow prevention.
- the at least one vent could also be disposed in the downpipe. Typically, water authorities have standard tests for equipment to be connected to mains pressure systems.
- Such tests may include applying a negative, or partial vacuum, pressure to the inlet of the valve while there is fluid surrounding the downstream end of the non-return valve to assess whether fluid can be drawn back through the valve.
- Various standards are set by authorities as to the amount of negative pressure which a valve must be able to withstand in preventing fluid being drawn from the outlet of the valve through the inlet and back into the mains pressure system.
- a current test involves applying 8 bar of negative pressure to the valve. If the height of water drawn through a Y_" glass tube does not exceed 300ml then the valve satisfies the test. The present valve satisfies the 300 ml test and also a 30ml test. For the preferred embodiment valve the amount down through the glass tube is negligible.
- a manifold defining an upstream part of the bypass passageway.
- the manifold incorporates a first port from the control chamber, a passageway from the port to a second port serving as an entrance to the control valve, a third port at an exit of the control valve and a fourth port to a downstream part of the bypass passageway.
- the downstream part of the bypass passageway may be incorporated into the main valve body.
- the control valve can then be bolted directly onto the valve at the interface of the second and third ports.
- these two components can be manufactured so that they are predisposed to being fitted together correctly in a manner known to one skilled in the art. This reduces faulty or improper assembly of the valve and control valve in use.
- the outlet from the control-valve can align with the upstream end of the bypass passageway.
- the manifold, the control valve and the body are supplied in fully assembled configuration to preclude wrongful assembly in situ by plumbers.
- the area surrounding the flow controller is sometimes referred to as the "discharge chamber".
- the discharge chamber is not necessarily a sealed or isolated chamber and the term often defines the general area where fluid exits the valve.
- fluid exiting the valve will be carried by a pipe leading away from the valve.
- the upstream end of the flush-pipe will be connected to the valve, often by a relatively standard-sized fitting which is often called a "flush-pipe nut".
- the standard-sizes enable different fittings from different manufacturers, to all be fitted to the one sized flush-pipe. In such a case, particularly where the flow controller projects into the top, or upstream end, of the flush-pipe, the top of the flush-pipe effectively defines the "discharge chamber".
- flush-pipe nut adaptor is adapted such that it can fit sealingly into the downstream end of the valve adjacent the outlet, and also sealingly engage with the standard- sized flush-pipe or flush-pipe nut so that fluid may flow through the valve and down the flush-pipe without leakage.
- valve does not require a down-pipe or flush-pipe to be connected to its downstream end for its useful operation.
- the invention may be used with any convenient control valve mechanism.
- the valve itself is desirably made from a material having sufficient strength, resilience and non-corrosive properties to withstand the pressures involved (which are typically up to 2000 pascals, although the valve can operate with greater pressures).
- the valve will typically be made from an alloy such as brass.
- the valve may also desirably be made from rigid polymeric material.
- the non-return valve and the seals or O-rings are desirably made from elastomeric materials known to those skilled in the art.
- a mains pressure valve having a body; a main valve component which is movable to effect opening and closing of the mains pressure valve; a flow controller downstream of the main valve component, the flow controller having a downstream end; and at least one air vent downstream of the flow controller wherein the at least one vent is shielded from the downstream end of the flow controller.
- a mains pressure valve including: (a) a body defining a main chamber having an inlet for fluid, an outlet for fluid and a control portion; (b) a main valve component located in the main chamber which is movable into and out of sealing engagement with the outlet of the main chamber and defining a passageway which provides fluid communication between the inlet and the control portion of the main chamber; (c)- a bypass passageway having an upstream end from the control portion of the main chamber and a downstream end which is downstream of the outlet of the main chamber, the bypass passageway having a downstream portion which is incorporated into the main body and an upstream portion; (d) a control valve to control the flow through the by-pass passageway to control the operation of the mains pressure valve; (e) a manifold connectable to the body, the manifold defining the upstream portion of the bypass passageway including a first port providing fluid communication between the control portion and the manifold and a second port providing fluid communication between the manif
- Figure 1 is a cross-section of a valve according to the invention.
- Figure 2 is a perspective view of the bonnet portion of the embodiment of Figure 1 ;
- Figure 3 is a cross-section of the bonnet normal (ie, horizontally) to the cross-section shown in Figure 1.
- Figures 4 to 8 are engineering cross-section drawings of specific components of one embodiment of the invention as shown in Figure 1.
- Figure 4 is flow valve housing 54 (and channel 23 can more clearly be seen).
- Figure 5 is, adaptor 50 (also showing openings 60).
- Figure 6 is piston 17 and Figure 7 is flush-pipe nut 53.
- Figure 1 shows a valve having a valve body 10 comprising principally an inlet 11 , a main chamber 12, a bypass passageway 13, an outlet 15 and a discharge chamber 14, defined by flush-pipe adaptor 50 and downstream by flush- pipe nut 53.
- Adaptor 50 has two threads 51 and 52. Inner thread 51 engages with a corresponding thread in valve body 10 and outer thread 52 engages with the top of the flush-pipe nut 53.
- a discharge pipe (not shown) fits to the bottom of flush- pipe nut 53 in a manner known in the art.
- the main chamber 12 contains a main valve component in the form of a piston 17.
- the piston 17 has in its lower portion a depending foot 45, having an annular groove 16 in which is located a seal 18 which engages with a corresponding seat at outlet 15 formed in the valve body 10 to form a seal when piston 17 is in the closed position. This prevents water flowing from inlet 11 to discharge chamber 14.
- Depending foot 45 of slightly smaller diameter than the discharge chamber 14, forms a choke on piston 17.
- Piston 17 also has a transverse passageway 19 and an axial passageway 20 which communicate with one another.
- a flow valve housing 54 screws into axial passageway 20 and rests on seal 55.
- a filter 21 is mounted at the upstream end of housing 54, at one end of the axial passageway 20 where it meets with the transverse passageway 19.
- a small flow valve 22 is located in housing 54 downstream of the filter. Fluid flowing through flow valve 22 can then pass through channel 23 in the housing 54 to a control portion 40 of the main chamber 12. Channel 23 is offset from the main axis of the valve so that it is not blocked by spindle 30 when the valve is open. Seal 56 restricts leakage from control portion 40 around piston 17.
- Water initially flows from the inlet 11 into main chamber 12 and into transverse passageway 19. Thereafter a portion of the water flows into the axial passageway through flow valve 22, and through channel 23 into the control portion 40.
- the flow valve regulates the rate of water permitted to flow through channel 23 into control portion 40.
- a manifold 25 (also shown in Figures 2 and 3) which contains a spindle 30 which projects into the main chamber 12.
- Manifold 25 is partially located in the main chamber 12.
- the amount of the spindle projecting into the control portion 40 may be adjusted by means of a bolt head 33.
- an "O" -ring 24 is located above main chamber 12. Seal 59 restricts leakage where the bypass passageway 13 connects from manifold 25 to valve body 10.
- the spindle 30 projecting into the main chamber 12 controls the extent of upward movement of piston 17 and the volume of control portion 40 when the valve is in the open position. That volume controls the period between actuation of the valve and the cessation of water flow through the valve.
- a bypass passageway 13 flows from the upper portion 40 through the manifold 25 forming an upstream portion of the bypass passageway.
- the bypass passageway continues in a downstream portion in the form of a conduit defined in valve body 10.
- the manifold 25 In the upstream portion of the bypass passageway, the manifold 25 has a port 35 leading from the upper portion 40.
- a control valve 42 is connected to the port 35 via a first passageway 41 (see Figures 2 and 3).
- Valve 42 is controlled by a solenoid (in the embodiment shown) which is electrically actuated to open valve 42 for a predetermined period or time or times and then close.
- Manifold 25 has a mouth 57 or "connecting opening" (see Fig. 2) in which is located both the downstream end of a first passageway 41 and the upstream end of a second passageway 43 leading away from valve 42.
- the downstream end of the second passageway connects to the downstream portion of the bypass passageway.
- the downstream end 46 of bypass passageway 13 is adjacent the mouth 47 (inlet) of, but outside, the flow controller in the form of a duckbill valve 36.
- An "O" -ring 37 assists in avoiding any leak from the discharge chamber 14 by forming a seal between adaptor 50 and valve body 10.
- Duckbill valve 36 (having mouth 47 and downstream end 48) is immediately downstream of outlet 15.
- inlet 11 and main chamber 12 are filled with water.
- the total force exerted on the top of the piston 17 by the water contained in the control portion 40 of the main chamber 12 is greater than the force exerted by the water in the lower portion of the main chamber 12 because the piston 17 has greater surface area exposed to the control portion 40.
- the valve is closed because seal 18 prevents water flowing from inlet 11 to discharge chamber 14.
- water is permitted to flow from control portion 40 through bypass passageway 13 and into discharge chamber 14. Consequently, the force of the water on the top of piston 17 in the control portion 40 of the main chamber becomes less than the force exerted by the water in the lower portion on the base of piston 17.
- the duckbill valve is constructed of flexible and elastic material, it can provide an appropriate degree of resistance over a range of water flow-rates and pressures experienced at outlet 15. In this state, water from inlet 11 will still flow into channel 19, through filter 20, through flow valve 22 and then through channel 23 into control portion 40.
- the means for actuating the valve may be selected to provide alternate flushing options.
- appropriate electronic control for the valve 42 may permit selection of different volumes of water to be discharged.
- Such electronic controls are well known.
- Manual actuators are also used and known.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Safety Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Details Of Valves (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ541717A NZ541717A (en) | 2003-02-06 | 2004-02-05 | Improved mains pressure flusher valve |
US10/544,546 US20060060242A1 (en) | 2003-02-06 | 2004-02-05 | Mains pressure flusher valve |
AU2004209560A AU2004209560B2 (en) | 2003-02-06 | 2004-02-05 | Improved mains pressure flusher valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003900508 | 2003-02-06 | ||
AU2003900508A AU2003900508A0 (en) | 2003-02-06 | 2003-02-06 | Improved mains pressure flusher valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004070125A1 true WO2004070125A1 (en) | 2004-08-19 |
Family
ID=30005208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2004/000130 WO2004070125A1 (en) | 2003-02-06 | 2004-02-05 | Improved mains pressure flusher valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060060242A1 (en) |
AU (1) | AU2003900508A0 (en) |
NZ (1) | NZ541717A (en) |
WO (1) | WO2004070125A1 (en) |
ZA (1) | ZA200506519B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005031202A1 (en) * | 2003-09-30 | 2005-04-07 | Danfoss A/S | Valve arrangement |
WO2010085840A1 (en) * | 2009-01-27 | 2010-08-05 | Doig Ian D | Pumps with extended surface valves and vent system |
EP2392844A1 (en) * | 2010-06-01 | 2011-12-07 | Geberit International AG | Power controlled valve, use of same, valve and flush device with such a valve |
WO2013189717A1 (en) * | 2012-06-18 | 2013-12-27 | Robert Bosch Gmbh | Valve and solar collector device which operate according to the thermosiphon principle |
US8892308B2 (en) | 2009-06-02 | 2014-11-18 | Topcon Precision Agriculture Pty Ltd. | Vehicle guidance system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080090631A1 (en) * | 2006-10-16 | 2008-04-17 | Global Vr | Peek-A-Boo Poker Game |
CN207633465U (en) * | 2017-08-31 | 2018-07-20 | 厦门建霖健康家居股份有限公司 | A kind of anti-syphon structure of cistern free pressure flush toilet |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE430588C (en) * | 1926-06-19 | Richard Lantzsch | Cross bar connection for stool, footrest u. like | |
FR1004107A (en) * | 1949-01-15 | 1952-03-26 | Water dispenser with automatic shut-off for flushing particularly for latrines or other destinations | |
DE2722889A1 (en) * | 1977-05-20 | 1978-11-23 | Rost & Soehne Georg | Self-closing valve for shower head - has elastic material valve stem to exert sufficient force to close valve even under low flow conditions |
US4832310A (en) * | 1988-08-18 | 1989-05-23 | Mansfield Plumbing Products, Inc. | Flush control valve |
WO1993016240A1 (en) * | 1992-02-07 | 1993-08-19 | S.A. & J.E. Hill Pty.Ltd. | Mains pressure flusher valve |
US5451030A (en) * | 1994-11-28 | 1995-09-19 | T&S Brass And Bronze Works, Inc. | Metering valve |
JPH08326117A (en) * | 1995-05-31 | 1996-12-10 | Energy Support Corp | Water saving device for flush toilet |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2271047A (en) * | 1937-03-04 | 1942-01-27 | Sloan Valve Co | Valve |
US2295871A (en) * | 1939-09-25 | 1942-09-15 | Sloan Valve Co | Flush valve |
US2619103A (en) * | 1947-01-31 | 1952-11-25 | Parker Appliance Co | Speed and aneroid controlled pilot operated valve |
US2634754A (en) * | 1948-12-27 | 1953-04-14 | Oil Ct Tool Company | Pilot controlled fluid pressure operated valve |
US2758811A (en) * | 1953-01-09 | 1956-08-14 | Edwin W Peterson | Multiple pilot controlled main valve |
US3008682A (en) * | 1959-07-10 | 1961-11-14 | Sloan Valve Co | Flush valves |
US5725197A (en) * | 1992-02-07 | 1998-03-10 | Dianna Adele Hill | Mains pressure flusher valve |
JP3128790B2 (en) * | 1992-06-15 | 2001-01-29 | 東陶機器株式会社 | Water supply control device |
JP3685923B2 (en) * | 1998-04-21 | 2005-08-24 | 日立建機株式会社 | Pipe break control valve device |
-
2003
- 2003-02-06 AU AU2003900508A patent/AU2003900508A0/en not_active Abandoned
-
2004
- 2004-02-05 NZ NZ541717A patent/NZ541717A/en not_active IP Right Cessation
- 2004-02-05 US US10/544,546 patent/US20060060242A1/en not_active Abandoned
- 2004-02-05 WO PCT/AU2004/000130 patent/WO2004070125A1/en active Application Filing
-
2005
- 2005-08-15 ZA ZA200506519A patent/ZA200506519B/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE430588C (en) * | 1926-06-19 | Richard Lantzsch | Cross bar connection for stool, footrest u. like | |
FR1004107A (en) * | 1949-01-15 | 1952-03-26 | Water dispenser with automatic shut-off for flushing particularly for latrines or other destinations | |
DE2722889A1 (en) * | 1977-05-20 | 1978-11-23 | Rost & Soehne Georg | Self-closing valve for shower head - has elastic material valve stem to exert sufficient force to close valve even under low flow conditions |
US4832310A (en) * | 1988-08-18 | 1989-05-23 | Mansfield Plumbing Products, Inc. | Flush control valve |
WO1993016240A1 (en) * | 1992-02-07 | 1993-08-19 | S.A. & J.E. Hill Pty.Ltd. | Mains pressure flusher valve |
US5451030A (en) * | 1994-11-28 | 1995-09-19 | T&S Brass And Bronze Works, Inc. | Metering valve |
JPH08326117A (en) * | 1995-05-31 | 1996-12-10 | Energy Support Corp | Water saving device for flush toilet |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005031202A1 (en) * | 2003-09-30 | 2005-04-07 | Danfoss A/S | Valve arrangement |
WO2010085840A1 (en) * | 2009-01-27 | 2010-08-05 | Doig Ian D | Pumps with extended surface valves and vent system |
US8892308B2 (en) | 2009-06-02 | 2014-11-18 | Topcon Precision Agriculture Pty Ltd. | Vehicle guidance system |
US9393990B2 (en) | 2009-06-02 | 2016-07-19 | Topcorn Precision Agriculture Pty Ltd. | Vehicle guidance system |
EP2392844A1 (en) * | 2010-06-01 | 2011-12-07 | Geberit International AG | Power controlled valve, use of same, valve and flush device with such a valve |
WO2013189717A1 (en) * | 2012-06-18 | 2013-12-27 | Robert Bosch Gmbh | Valve and solar collector device which operate according to the thermosiphon principle |
CN104395657A (en) * | 2012-06-18 | 2015-03-04 | 罗伯特·博世有限公司 | Valve and solar collector device which operate according to the thermosiphon principle |
Also Published As
Publication number | Publication date |
---|---|
US20060060242A1 (en) | 2006-03-23 |
NZ541717A (en) | 2007-03-30 |
ZA200506519B (en) | 2006-04-26 |
AU2003900508A0 (en) | 2003-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11788264B2 (en) | Automatic draining back flow prevention device | |
ZA200506519B (en) | Improved mains pressure flusher valve | |
US7140590B2 (en) | Pinch valve element for plumbing fixture flush valve | |
US5279324A (en) | Anti-siphoning valve assembly and plumbing fixture including same | |
KR900002882B1 (en) | Control stop for flushing system | |
AU2004209560B2 (en) | Improved mains pressure flusher valve | |
WO1998006910A1 (en) | Improved mains pressure flusher valve | |
JP3897619B2 (en) | Automatic water supply device | |
WO2007109903A1 (en) | Safety valve for toilet tank | |
US20110203672A1 (en) | Dual valve method and apparatus for limiting toilet water flow | |
US5725197A (en) | Mains pressure flusher valve | |
KR20190101098A (en) | Pilot operated safety valve system | |
US9222584B2 (en) | Rigid piston retrofit for a diaphragm flush valve | |
EP0627034B1 (en) | Main pressure flusher valve | |
EP1601901B1 (en) | Toilet cistern filling valve | |
JP2000249245A (en) | Pressure reducing type isolation valve | |
CN114423979A (en) | Air release valve with low pressure seal | |
GB2255424A (en) | Fluid flow control valves | |
JP2005291407A (en) | Backflow preventive device | |
ZA200506863B (en) | Toilet cistern filling valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2006060242 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10544546 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004209560 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 541717 Country of ref document: NZ |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005/06519 Country of ref document: ZA Ref document number: 200506519 Country of ref document: ZA |
|
ENP | Entry into the national phase |
Ref document number: 2004209560 Country of ref document: AU Date of ref document: 20040205 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2004209560 Country of ref document: AU |
|
WWP | Wipo information: published in national office |
Ref document number: 10544546 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |