WO2002103123A2 - Valve system for various modes - Google Patents

Valve system for various modes Download PDF

Info

Publication number
WO2002103123A2
WO2002103123A2 PCT/ZA2002/000069 ZA0200069W WO02103123A2 WO 2002103123 A2 WO2002103123 A2 WO 2002103123A2 ZA 0200069 W ZA0200069 W ZA 0200069W WO 02103123 A2 WO02103123 A2 WO 02103123A2
Authority
WO
WIPO (PCT)
Prior art keywords
valve
water
mode
valve system
rotatable member
Prior art date
Application number
PCT/ZA2002/000069
Other languages
French (fr)
Other versions
WO2002103123A3 (en
Inventor
Terence John Andrews
David Alan Bray
Original Assignee
Terence John Andrews
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terence John Andrews filed Critical Terence John Andrews
Priority to APAP/P/2003/002903A priority Critical patent/AP2003002903A0/en
Publication of WO2002103123A2 publication Critical patent/WO2002103123A2/en
Publication of WO2002103123A3 publication Critical patent/WO2002103123A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/075—Arrangement of devices for control of pressure or flow rate
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0407—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means

Definitions

  • This invention relates to a valve system for various modes such as a full flow, trickle flow, reverse flow and closed mode.
  • a valve system for a water user includes a valve body with a rotatable member therein, the body having an inlet and outlet for water and the rotatable member having passageways which in one mode (or position of the rotatable member) provides a free flow of water through the valve and in a second mode introduces a restricted passage for water between the inlet and outlet, the degree of restriction being dependent on the required rate of flow for a trickle feed through the valve.
  • the restriction may be an orifice in a disc, the latter being complemental to the internal diameter of the passage and the orifice having a size which is dependent on the pressure of the water supply. Because of the variance in the pressure of water in a particular reticulation, discus with various sizes of orifices will be required and these may be colour or otherwise coded.
  • a filter or sieve may be provided upstream of the disc.
  • a completely closed or third made may be achieved by rotation of the member to a third position in which there is no communication between the inlet and outlet.
  • a fourth mode may be achieved by rotation of the member to a position intermediate the first two modes to effect a flushing of the valve to remove any solids or other matter.
  • a fifth mode may be achieved by another rotation to a position in which the flow of water is directed in back- washing mode of the filter referred to above.
  • Figure 2 is a sectional side view through a valve unit according to the invention.
  • a valve comprises a valve body 10 which has an inlet 12 and an outlet 14. The water flows in the direction of the arrow 16.
  • the body includes a rotatable member 18 which has passageways indicated by reference 20.
  • the valve body includes a lock ring 22 and a screw cap 24. Removal of the cap 24, which can only be done by an authorised person, gives access to a well 26 in the form of a hexagon to receive an Allen key so that the rotatable member may be rotated to one of the five modes to be described.
  • the rotatable member has a latch 30 for retaining the member in a chosen rotational position, the latch being displaced from a socket 32 by downward pressure on the member before the Allen key is turned, whereafter the latch engages the next socket 34 due to its inherent elasticity.
  • the passages are at right angles as shown in Figure 2 to 6 and rotation of the member 18 may be made to a number of possible positions, the five shown being those required for the five modes.
  • a restriction 42 is options and is used where the water pressure is too high or is variable, in which case restrictions comprising discs having various sizes of orifices are provided and these may be colour or otherwise coded for particular pressures.
  • a restriction 44 is located in the passage 50 which is at right angles to the through passage 40.
  • the water authority rotates the member to the position shown in Figure 3 so that the passage 50 is in line with the inlet and outlet and the water must perforce pass through the restriction.
  • the restriction comprises a disc with an orifice and which is associated with a filter 52 to prevent clogging of the orifice of the disc.
  • FIG. 4 A third mode is shown in Figure 4 in which the member is rotated to a position as shown in which there is no communication between the inlet and the outlet.
  • the drainage holes 68 and 70 play no part in the operation of the valve.

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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

A valve system is provided where the water supplier can change the mode of operation between a full free flow through the valve and a limited trickle flow, so that the user will not be left without any water should the supplier decide that the supply of water to a person should be cut off; the valve comprising a casing with a rotatable member, the member having passageways at right angles, one passageway allowing full free flow through the valve and the other passageway including a restriction with an orifice determined by the rate of trickle flow sought, and having a filter upstream thereof for prevention of clogging of the orifice; the valve also providing additional modes, one of which provides for a complete shut off of water, another providing a flush of the valve and another providing a back washing action for cleaning the filter.

Description

VAL VE SYSTEM FOR VARIOUS MODES
TECHNICAL FIELD OF THE INVENTION
This invention relates to a valve system for various modes such as a full flow, trickle flow, reverse flow and closed mode.
BACKGROUND ART
Until recently it was possible for a water supply body to close off a user in the event of non-payment of an account. However, this is rather a drastic step to have to take because it can cause serious problems for the user and can even constitute a matter of life or death. The present legislation in this country forbids the complete cutting off of a water supply and the idea of a trickle flow is essential to overcome the problem and to satisfy the legislation.
It is1 an object of the present invention to provide an arrangement which permits a full flow or a trickle flow at the discretion of the water supplier. It is a further object of the invention to provide other modes for the valve system of the water user.
DISCLOSURE OF THE INVENTION
According to the invention a valve system for a water user includes a valve body with a rotatable member therein, the body having an inlet and outlet for water and the rotatable member having passageways which in one mode (or position of the rotatable member) provides a free flow of water through the valve and in a second mode introduces a restricted passage for water between the inlet and outlet, the degree of restriction being dependent on the required rate of flow for a trickle feed through the valve.
at right angles one passageway being clear for a full flow of water therethrough when rotated to the first mode and the other having a restriction in the second mode for the trickle feed. Access to the member is confined to the water supplier who, after removing a cap portion is able to use an Allen key or the like to rotate the member to change from the first mode to the second mode.
The restriction may be an orifice in a disc, the latter being complemental to the internal diameter of the passage and the orifice having a size which is dependent on the pressure of the water supply. Because of the variance in the pressure of water in a particular reticulation, discus with various sizes of orifices will be required and these may be colour or otherwise coded.
To avoid the clogging of he orifice, a filter or sieve may be provided upstream of the disc.
A completely closed or third made may be achieved by rotation of the member to a third position in which there is no communication between the inlet and outlet.
A fourth mode may be achieved by rotation of the member to a position intermediate the first two modes to effect a flushing of the valve to remove any solids or other matter.
A fifth mode may be achieved by another rotation to a position in which the flow of water is directed in back- washing mode of the filter referred to above.
BRIEF DESCRIPTION OF THE INVENTION
An embodiment of the invention is described below with reference to the accompanying drawings, in which:
Figure 2 is a sectional side view through a valve unit according to the invention; and
Figures 2 to 6 ore cross sectional views through the rotfttablo member in fiv possible modes, each figure comprising a trilogy of a sketch indicating the section lines of the two cross sections of the particular Figure. BEST MODE FOR CARRYING OUT THE INVENTION
In Figure 1 a valve comprises a valve body 10 which has an inlet 12 and an outlet 14. The water flows in the direction of the arrow 16.
The body includes a rotatable member 18 which has passageways indicated by reference 20.
The valve body includes a lock ring 22 and a screw cap 24. Removal of the cap 24, which can only be done by an authorised person, gives access to a well 26 in the form of a hexagon to receive an Allen key so that the rotatable member may be rotated to one of the five modes to be described. The rotatable member has a latch 30 for retaining the member in a chosen rotational position, the latch being displaced from a socket 32 by downward pressure on the member before the Allen key is turned, whereafter the latch engages the next socket 34 due to its inherent elasticity.
The passages are at right angles as shown in Figure 2 to 6 and rotation of the member 18 may be made to a number of possible positions, the five shown being those required for the five modes.
Referring now to Figure 2 which illustrates the full flow mode in which the passage
40 is in line with the inlet and outlet so that water flows directly through the valve. A restriction 42 is options and is used where the water pressure is too high or is variable, in which case restrictions comprising discs having various sizes of orifices are provided and these may be colour or otherwise coded for particular pressures.
A restriction 44 is located in the passage 50 which is at right angles to the through passage 40.
When it is required to convert the valve to a trickle mode - for example, if the user has failed to pay his account, the water authority rotates the member to the position shown in Figure 3 so that the passage 50 is in line with the inlet and outlet and the water must perforce pass through the restriction.
As described above the restriction comprises a disc with an orifice and which is associated with a filter 52 to prevent clogging of the orifice of the disc.
* A third mode is shown in Figure 4 in which the member is rotated to a position as shown in which there is no communication between the inlet and the outlet.
For the remaining two modes it is necessary to point out the short passages 60 and
62 on either side of the passage 40. In Figure 5 the passage 6o communicates with the inlet but the outlet is obturated, with the result that the water passes along the broken line 66 and through a drainage hole 68, thereby flushing out any detritus which may have collected in the passage.
3". In Figure 6 the passage 62 is in communication with the inlet and the outlet is again obturated with the result that the water is forced to flow in reverse direction through the restriction and filter to the other drainage hole 70, thereby creating a back washing action.
Other than in the fourth and fifth modes, the drainage holes 68 and 70 play no part in the operation of the valve.

Claims

CLAIMS:
1. A valve system for a water user including a valve body with a rotatable member therein, the body having an inlet and an outlet for water and characterised in that the rotatable member has passageways providing a number of modes of flow and in which one mode (or position of the rotatable member) provides a free flow of water through the valve, and a second mode introducing a restricted passage for water between the inlet and the outlet, the degree of restriction being dependent on the required rate of flow for a trickle feed through the valve.
2. The valve system according to claim 1 characterised in that the rotatable member has passageways at an angle to one another, one passageway being clear for a full flow of water therethrough when rotated to its first mode; and the other having a restriction in a second position adapted to permit a trickle feed.
3. The valve system according to claim 2 characterised in that the restriction comprises a disc with an orifice, the size of the orifice being dependent on the pressure of the water supply.
4. The valve according to claim 2 or claim 3 characterised in that a filter is provided upstream of the restriction.
5. The valve system according to any of claims 2 to 4 characterised in that a plurality of discs are provided with different orifice sizes corresponding to possible variations in pressure of the water supply.
6. The valve system according to any of the above claims characterised in that in a third mode, there is no communication between inlet and outlet.
7. The valve system according to any of the above claims in which a fourth mode corresponds with a position of the rotatable member to a position intermediate two modes to effect a flushing of the valve, a supplementary short passageway and a drainage hole being provided for such mode.
8. The valve system according to any of the above claims characterised in that a fifth mode corresponds with a back washing of the filter of either of claims 4 or 5.
9. A valve system according to any of the above claims characterised in that access to the rotatable member is confined to the water supplier or authorised person who, after removing a cap portion, is able to use a tool such as an Allen key to rotate the member to change from one mode to another.
PCT/ZA2002/000069 2001-04-30 2002-04-29 Valve system for various modes WO2002103123A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
APAP/P/2003/002903A AP2003002903A0 (en) 2001-04-30 2002-04-29 Valve system for various modes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2001/2624 2001-04-30
ZA200102624 2001-04-30

Publications (2)

Publication Number Publication Date
WO2002103123A2 true WO2002103123A2 (en) 2002-12-27
WO2002103123A3 WO2002103123A3 (en) 2003-02-27

Family

ID=25589122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2002/000069 WO2002103123A2 (en) 2001-04-30 2002-04-29 Valve system for various modes

Country Status (2)

Country Link
AP (1) AP2003002903A0 (en)
WO (1) WO2002103123A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009007127A1 (en) * 2007-07-12 2009-01-15 Gebr. Kemper Gmbh + Co. Kg Metallwerke Connection fitting
DE202009003135U1 (en) * 2009-03-09 2010-09-02 Gebr. Kemper Gmbh + Co. Kg Drinking or service water system
WO2014027304A1 (en) * 2012-08-13 2014-02-20 Govender Preevin A valve device, a system and method for controlling a water supply

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432122A1 (en) * 1978-07-27 1980-02-22 Rafaut & Cie Flow control valve with rotatable cylindrical plug - has circumferential groove of varying depth to control flow between central bore in plug and conduit in valve body
EP0545550A1 (en) * 1991-11-30 1993-06-09 Schlumberger Industries Limited Prepayment water supply systems
US5305986A (en) * 1993-03-31 1994-04-26 Hunt Kevin F Fluid control valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432122A1 (en) * 1978-07-27 1980-02-22 Rafaut & Cie Flow control valve with rotatable cylindrical plug - has circumferential groove of varying depth to control flow between central bore in plug and conduit in valve body
EP0545550A1 (en) * 1991-11-30 1993-06-09 Schlumberger Industries Limited Prepayment water supply systems
US5305986A (en) * 1993-03-31 1994-04-26 Hunt Kevin F Fluid control valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009007127A1 (en) * 2007-07-12 2009-01-15 Gebr. Kemper Gmbh + Co. Kg Metallwerke Connection fitting
EP2299009A1 (en) * 2007-07-12 2011-03-23 Gebr. Kemper GmbH + Co. KG Metallwerke Connecting fitting
US8578962B2 (en) 2007-07-12 2013-11-12 Gebr. Kemper Gmbh & Co. Kg Metallwerke Connection fitting
DE202009003135U1 (en) * 2009-03-09 2010-09-02 Gebr. Kemper Gmbh + Co. Kg Drinking or service water system
WO2014027304A1 (en) * 2012-08-13 2014-02-20 Govender Preevin A valve device, a system and method for controlling a water supply

Also Published As

Publication number Publication date
AP2003002903A0 (en) 2003-12-31
WO2002103123A3 (en) 2003-02-27

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