CA2541613A1 - Safety valve for toilet tank - Google Patents
Safety valve for toilet tank Download PDFInfo
- Publication number
- CA2541613A1 CA2541613A1 CA 2541613 CA2541613A CA2541613A1 CA 2541613 A1 CA2541613 A1 CA 2541613A1 CA 2541613 CA2541613 CA 2541613 CA 2541613 A CA2541613 A CA 2541613A CA 2541613 A1 CA2541613 A1 CA 2541613A1
- Authority
- CA
- Canada
- Prior art keywords
- piston
- valve
- water
- pressure
- orifice
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
- E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
- E03D1/32—Arrangement of inlet valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A filling system for a toilet tank prevents continual flow to the tank in the event of a leak from the tank by providing a hydraulically actuated safety valve for halting water flow to the filling valve in the event that the water flow continues for a time longer than an expected time of filling. The safety valve has a valve member connected to a piston mounted in a cylinder defining a first chamber on one side of the piston and a second chamber on the other side. A venturi in the supply duct provides in a low pressure chamber of the venturi a water pressure lower than the supply pipe pressure such that a pressure difference across the piston caused by the difference in pressure between the supply pressure and the low pressure chamber causes the piston to move from the first end toward the second end. A
flow control orifice regulates a rate of flow of water such that a time of movement of the piston is greater than an expected time required to fill the toilet tank.
A spring biases the piston to return the piston to the first end after the toilet tank is filled.
flow control orifice regulates a rate of flow of water such that a time of movement of the piston is greater than an expected time required to fill the toilet tank.
A spring biases the piston to return the piston to the first end after the toilet tank is filled.
Claims (20)
1. A safety valve for halting water flow to a filling valve of a toilet tank in the event of failure, the valve comprising:
a valve body;
an inlet connector in the valve body for inlet of water from a water supply pipe at a supply pipe pressure;
an outlet connector in the valve body for connection to a filling tine of a toilet tank;
a water supply duct within the valve body for passage of water from the inlet connector to the outlet connector;
a valve seat in the supply duct;
a valve member for movable between a closed position against the valve seat to prevent flow of the water from the inlet connector to the outlet connector and an open position spaced from the valve seat to allow flow;
a piston connected to the valve member for moving the valve member;
the piston being mounted in a cylinder in the valve body having a first chamber on one side of the piston and a second chamber on the other side of the piston;
the piston being movable within the cylinder from a first end in which the valve member is open to a second end in which the valve member is closed;
a pressure reduction orifice in the supply duct in the valve body through which the water flows as it passes from the inlet connector to the outlet connector having an orifice arranged so as to provide in a low pressure chamber of the pressure reduction orifice a water pressure lower than the supply pipe pressure;
a first transfer duct in the valve body for transferring water at the supply pipe pressure from the water supply duct to the first end of the cylinder;
a second transfer duct in the valve body for connecting second end of the cylinder to the low pressure chamber;
such that a pressure difference across the piston caused by the difference in pressure between the supply pressure and the low pressure chamber causes the piston to move from the first end toward the second end;
a flow control orifice in one of the first and second transfer ducts for regulating a rate of flow of water therethrough such that a time of movement of the piston from the first end to the second end in which the valve member is closed is greater than an expected time required to fill the toilet tank;
and a spring biasing the piston to the first end for returning the piston to the first end after the toilet tank is filled, when there is no pressure difference across the piston;
whereby, in the event that the tank is filled and the filling valve closed before the valve member is closed by the movement of the piston, the piston is moved back to the first end;
and whereby, in the event the filling valve remains open for a time longer than said time of movement, the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
a valve body;
an inlet connector in the valve body for inlet of water from a water supply pipe at a supply pipe pressure;
an outlet connector in the valve body for connection to a filling tine of a toilet tank;
a water supply duct within the valve body for passage of water from the inlet connector to the outlet connector;
a valve seat in the supply duct;
a valve member for movable between a closed position against the valve seat to prevent flow of the water from the inlet connector to the outlet connector and an open position spaced from the valve seat to allow flow;
a piston connected to the valve member for moving the valve member;
the piston being mounted in a cylinder in the valve body having a first chamber on one side of the piston and a second chamber on the other side of the piston;
the piston being movable within the cylinder from a first end in which the valve member is open to a second end in which the valve member is closed;
a pressure reduction orifice in the supply duct in the valve body through which the water flows as it passes from the inlet connector to the outlet connector having an orifice arranged so as to provide in a low pressure chamber of the pressure reduction orifice a water pressure lower than the supply pipe pressure;
a first transfer duct in the valve body for transferring water at the supply pipe pressure from the water supply duct to the first end of the cylinder;
a second transfer duct in the valve body for connecting second end of the cylinder to the low pressure chamber;
such that a pressure difference across the piston caused by the difference in pressure between the supply pressure and the low pressure chamber causes the piston to move from the first end toward the second end;
a flow control orifice in one of the first and second transfer ducts for regulating a rate of flow of water therethrough such that a time of movement of the piston from the first end to the second end in which the valve member is closed is greater than an expected time required to fill the toilet tank;
and a spring biasing the piston to the first end for returning the piston to the first end after the toilet tank is filled, when there is no pressure difference across the piston;
whereby, in the event that the tank is filled and the filling valve closed before the valve member is closed by the movement of the piston, the piston is moved back to the first end;
and whereby, in the event the filling valve remains open for a time longer than said time of movement, the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
2. The safety valve according to Claim 1 wherein the flow control orifice is adjustable to vary the time of movement.
3. The safety valve according to Claim 1 or 2 wherein there is provided a reset transfer duct having a reset valve which is manually operable for transferring water under supply pressure to the second side of the piston to reset the piston at the first end, in the event that the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
4. The safety valve according to any one of Claims 1 to 3 wherein there is provided by-pass duct with a one-way valve for by-passing the flow control orifice to allow passage of water at a rate greater than the rate through the flow control orifice so as to cause the piton to return to the first end at a rate faster than the movement to the second end.
5. The safety valve according to any one of Claims 1 to 4 wherein the flow control orifice is in the second transfer duct.
6. The safety valve according to any one of Claims 1 to 5 wherein the valve member is attached to a piston rod of the piston.
7. The safety valve according to Claim 6 wherein the valve member is located on an end of the piston rod and moves axially with the piston rod onto the valve seat.
8. The safety valve according to Claim 7 wherein the piston rod passes through the second end of the cylinder.
9. The safety valve according to any one of Claims 1 to 8 wherein the spring is mounted in the second end of the cylinder.
10. The safety valve according to any one of Claims 1 to 9 wherein the pressure reduction orifice is a venturi which is downstream of the valve seat.
11. The safety valve according to any one of Claims 1 to 10 wherein there is provided a second pressure reduction orifice for low flow which is smaller than the pressure reduction orifice such that the second orifice provides in a low pressure chamber of the low flow orifice a water pressure lower than the supply pipe pressure when there is a low flow of water through the water supply duct caused by a slow leakage of the filling valve, the low pressure chamber of the low flow orifice being connected to the second end of the cylinder.
12. The safety valve according to Claim 11 wherein the low pressure chambers of the first and second orifices are connected in series and there is a back check valve between the first orifice and the second orifice.
13. The safety valve according to Claim 11 or 12 wherein the piston has a piston rod passing through a chamber to which the first and second orifices are attached and wherein the piston rod is arranged to close off the connection to the first orifice before closing the valve member on the valve seat.
14. The safety valve according to Claim 11, 12 or 13 wherein there is provided a check valve arranged to keep the first larger orifice closed at low pressure until the pressure exceeds a predetermined value indicative of the filling valve of the toilet being fully open.
15. Apparatus comprising:
a toilet tank;
a filling valve for connection to a water supply pipe for supplying filling water to the tank at a supply pipe pressure;
the filling valve having a filling valve member and an actuator responsive to a level of water in the toilet tank for opening the filling valve member when the tank is below a filled level and for closing the filling valve member when the tank is at the filled level;
and a safety valve for halting water flow to the filling valve in the event that the water flow continues for time longer than an expected time of filling;
the safety valve comprising:
a valve body;
an inlet connector in the valve body for connection to the water supply pipe;
an outlet connector in the valve body for connection to the filling valve;
a water supply duct within the valve body for passage of water from the inlet connector to the outlet connector;
a valve seat in the supply duct;
a valve member for movable between a closed position against the valve seat to prevent flow of the water from the inlet connector to the outlet connector and an open position spaced from the valve seat to allow flow;
a piston connected to the valve member for moving the valve member;
the piston being mounted in a cylinder in the valve body having a first chamber on one side of the piston and a second chamber on the other side of the piston;
the piston being movable within the cylinder from a first end in which the valve member is open to a second end in which the valve member is closed;
a pressure reduction orifice in the supply duct in the valve body through which the water flows as it passes from the inlet connector to the outlet connector having an orifice arranged so as to provide in a low pressure chamber of the pressure reduction orifice a water pressure lower than the supply pipe pressure;
a first transfer duct in the valve body for transferring water at the supply pipe pressure from the water supply duct to the first end of the cylinder;
a second transfer duct in the valve body for connecting second end of the cylinder to the low pressure chamber;
such that a pressure difference across the piston caused by the difference in pressure between the supply pressure and the low pressure chamber causes the piston to move from the first end toward the second end;
a flow control orifice in one of the first and second transfer ducts for regulating a rate of flow of water therethrough such that a time of movement of the piston from the first end to the second end in which the valve member is closed is greater than an expected time required to fill the toilet tank;
and a spring biasing the piston to the first end for returning the piston to the first end after the toilet tank is filled, when there is no pressure difference across the piston;
whereby, in the event that the tank is filled and the filling valve member is closed before the valve member is closed by the movement of the piston, the piston is moved back to the first end;
and whereby, in the event the filling valve member remains open for a time longer than said time of movement, the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
a toilet tank;
a filling valve for connection to a water supply pipe for supplying filling water to the tank at a supply pipe pressure;
the filling valve having a filling valve member and an actuator responsive to a level of water in the toilet tank for opening the filling valve member when the tank is below a filled level and for closing the filling valve member when the tank is at the filled level;
and a safety valve for halting water flow to the filling valve in the event that the water flow continues for time longer than an expected time of filling;
the safety valve comprising:
a valve body;
an inlet connector in the valve body for connection to the water supply pipe;
an outlet connector in the valve body for connection to the filling valve;
a water supply duct within the valve body for passage of water from the inlet connector to the outlet connector;
a valve seat in the supply duct;
a valve member for movable between a closed position against the valve seat to prevent flow of the water from the inlet connector to the outlet connector and an open position spaced from the valve seat to allow flow;
a piston connected to the valve member for moving the valve member;
the piston being mounted in a cylinder in the valve body having a first chamber on one side of the piston and a second chamber on the other side of the piston;
the piston being movable within the cylinder from a first end in which the valve member is open to a second end in which the valve member is closed;
a pressure reduction orifice in the supply duct in the valve body through which the water flows as it passes from the inlet connector to the outlet connector having an orifice arranged so as to provide in a low pressure chamber of the pressure reduction orifice a water pressure lower than the supply pipe pressure;
a first transfer duct in the valve body for transferring water at the supply pipe pressure from the water supply duct to the first end of the cylinder;
a second transfer duct in the valve body for connecting second end of the cylinder to the low pressure chamber;
such that a pressure difference across the piston caused by the difference in pressure between the supply pressure and the low pressure chamber causes the piston to move from the first end toward the second end;
a flow control orifice in one of the first and second transfer ducts for regulating a rate of flow of water therethrough such that a time of movement of the piston from the first end to the second end in which the valve member is closed is greater than an expected time required to fill the toilet tank;
and a spring biasing the piston to the first end for returning the piston to the first end after the toilet tank is filled, when there is no pressure difference across the piston;
whereby, in the event that the tank is filled and the filling valve member is closed before the valve member is closed by the movement of the piston, the piston is moved back to the first end;
and whereby, in the event the filling valve member remains open for a time longer than said time of movement, the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
16. The apparatus according to Claim 15 wherein there is provided a reset transfer duct having a reset valve which is manually operable for transferring water under supply pressure to the second side of the piston to reset the piston at the first end, in the event that the valve member is closed by the movement of the piston to prevent further supply of water to the filling valve.
17. The apparatus according to Claim 15 or 16 wherein there is provided by-pass duct with a one-way valve for by-passing the flow control orifice to allow passage of water at a rate greater than the rate through the flow control orifice so as to cause the piton to return to the first end at a rate faster than the movement to the second end.
18. The apparatus according to any one of Claims 15 to 17 wherein there is provided a low flow pressure reduction orifice having a second orifice which is smaller than the pressure reduction orifice such that the low flow pressure reduction orifice provides in a low pressure chamber of the low flow pressure reduction orifice a water pressure lower than the supply pipe pressure when there is a low flow of water through the water supply duct caused by a slow leakage of the filling valve, the low pressure chamber of the low flow pressure reduction orifice being connected to the second end of the cylinder.
19. The apparatus according to any one of Claims 15 to 18 wherein the flow control orifice is in the second transfer duct.
20. The apparatus according to any one of Claims 15 to 19 wherein the valve member is attached to a piston rod of the piston.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2541613A CA2541613C (en) | 2006-03-28 | 2006-03-28 | Safety valve for toilet tank |
| PCT/CA2007/000509 WO2007109903A1 (en) | 2006-03-28 | 2007-03-28 | Safety valve for toilet tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2541613A CA2541613C (en) | 2006-03-28 | 2006-03-28 | Safety valve for toilet tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2541613A1 true CA2541613A1 (en) | 2007-09-28 |
| CA2541613C CA2541613C (en) | 2012-01-10 |
Family
ID=38540765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2541613A Expired - Fee Related CA2541613C (en) | 2006-03-28 | 2006-03-28 | Safety valve for toilet tank |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2541613C (en) |
| WO (1) | WO2007109903A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155638A (en) * | 2015-09-06 | 2015-12-16 | 铉雅国际（香港）有限公司 | Automatic closing structure of water inlet valve of closestool |
| CN109916559A (en) * | 2019-02-20 | 2019-06-21 | 嘉兴福可吉精密机械有限公司 | Hub bearing shock resistance sealing test device |
| CN111577690A (en) * | 2020-04-01 | 2020-08-25 | 武汉船用机械有限责任公司 | Hydraulic control valve group |
| EP3665335A4 (en) * | 2017-08-07 | 2021-04-21 | Fluidmaster, INC. | Fluid control system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886969A (en) * | 1973-05-23 | 1975-06-03 | Us Energy | Time delay vent valve |
| US4498203A (en) * | 1983-05-25 | 1985-02-12 | Bradley Corporation | Flood preventer for fluid filling systems |
| IL115221A (en) * | 1995-09-08 | 1999-04-11 | Rosenberg Peretz | Fluid flow control valve |
| US5940899A (en) * | 1997-12-31 | 1999-08-24 | Envision This, Inc. | System for preventing toilet overflows |
| US6961966B2 (en) * | 2003-12-18 | 2005-11-08 | Limit, Inc. | Toilet overflow prevention device |
-
2006
- 2006-03-28 CA CA2541613A patent/CA2541613C/en not_active Expired - Fee Related
-
2007
- 2007-03-28 WO PCT/CA2007/000509 patent/WO2007109903A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155638A (en) * | 2015-09-06 | 2015-12-16 | 铉雅国际（香港）有限公司 | Automatic closing structure of water inlet valve of closestool |
| CN105155638B (en) * | 2015-09-06 | 2017-04-12 | 铉雅国际（香港）有限公司 | Automatic closing structure of water inlet valve of closestool |
| EP3665335A4 (en) * | 2017-08-07 | 2021-04-21 | Fluidmaster, INC. | Fluid control system and method |
| US11939206B2 (en) | 2017-08-07 | 2024-03-26 | Fluidmaster, Inc. | Fluid control system and method |
| CN109916559A (en) * | 2019-02-20 | 2019-06-21 | 嘉兴福可吉精密机械有限公司 | Hub bearing shock resistance sealing test device |
| CN109916559B (en) * | 2019-02-20 | 2021-06-08 | 嘉兴福可吉精密机械有限公司 | Hub bearing shock-resistant sealing testing device |
| CN111577690A (en) * | 2020-04-01 | 2020-08-25 | 武汉船用机械有限责任公司 | Hydraulic control valve group |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2541613C (en) | 2012-01-10 |
| WO2007109903A1 (en) | 2007-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI3760795T3 (en) | Liquid supply system | |
| US7380293B2 (en) | Safety valve for toilet tank | |
| JP6290923B2 (en) | Back pressure control device with simple pump start-up | |
| ATE473383T1 (en) | OVERCURRENT BLOCKER | |
| US20080128144A1 (en) | Field convertible valve and sprinkler system | |
| CA2666533A1 (en) | Double check back flow prevention device | |
| TW405068B (en) | Flow control valve assembly | |
| BRPI0615822A2 (en) | tank distributor set | |
| CA2541613A1 (en) | Safety valve for toilet tank | |
| WO2007031672A3 (en) | Fluid flow control valve | |
| WO2007015814A3 (en) | Electro-hydraulic metering valve with integral flow control | |
| WO2007110859A3 (en) | Control valve with integrated insert providing valve seat and plug guides | |
| JP2004528520A (en) | Control valve | |
| JP2012508357A5 (en) | ||
| AU2008299694B2 (en) | Water saving apparatus | |
| CA2689197A1 (en) | Flow controlled actuator apparatus for use with self-closing stop valves | |
| JP2008222214A5 (en) | ||
| US7231937B2 (en) | Automatic shutoff valve | |
| US4964421A (en) | Water saver valve | |
| WO2008110749A3 (en) | Dispensing nozzle preventing misfuelling | |
| RU2386882C1 (en) | Stop and control device for automatic isolation of gas well pipeline | |
| RU2007131110A (en) | SYSTEM OF WATER SUPPLY OF THE COMPLEX CONSUMER AND WATER SUPPLY SYSTEM OF THE BUILDING, STRUCTURES | |
| JP2532254Y2 (en) | Emergency on-off valve with lock mechanism | |
| WO2010147572A1 (en) | Apparatus with movable timing sleeve control of flow through, and safety control operation | |
| RU2612665C1 (en) | Hydraulic safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20220301 |
|
| MKLA | Lapsed |
Effective date: 20200831 |