WO1989009645A1 - Water-filtering device - Google Patents

Water-filtering device Download PDF

Info

Publication number
WO1989009645A1
WO1989009645A1 PCT/SE1989/000195 SE8900195W WO8909645A1 WO 1989009645 A1 WO1989009645 A1 WO 1989009645A1 SE 8900195 W SE8900195 W SE 8900195W WO 8909645 A1 WO8909645 A1 WO 8909645A1
Authority
WO
WIPO (PCT)
Prior art keywords
outlet
valve housing
inlet
valve
water
Prior art date
Application number
PCT/SE1989/000195
Other languages
French (fr)
Inventor
Bror Gustafsson
Original Assignee
Aktiebolaget Västbo Plast
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 Aktiebolaget Västbo Plast filed Critical Aktiebolaget Västbo Plast
Publication of WO1989009645A1 publication Critical patent/WO1989009645A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • B01D35/043—Reversible faucet filters

Definitions

  • the present invention relates to a water-filtering device which is intended to be connected to a water con- duit and which has a filter unit with an inlet for receiv ⁇ ing water from said water conduit, a filter for filtering the water and an outlet for discharging filtered water; and a valve unit with a valve housing having an inlet in ⁇ tended to be connected to said water conduit, a first out- let communicating with the inlet of the filter unit, and a second outlet spaced from the filter unit, as well as a substantially cylindrical valve body provided in a sub ⁇ stantially cylindrical recess in the valve housing and ro- tatable about its own axis, said valve body being shift- able between two positions and so designed that when in one of said positions, it establishes a connection, which is sealed with respect to said second outlet of the valve housing, between the inlet of the valve housing and said first outlet thereof, and when in the other of said posi- tions, it establishes a connection, which is sealed with respect to said
  • the object of the present invention is to provide a simple and reliable water-filtering device which is so conceived that the water from the water tap can be led through the filter unit when so desired, for instance when the water should be used for drinking or cooking purposes, and can be led past the filter unit when filtering is not required, for instance when the water should be used as washing water or dishwater, which means that the filter unit can be employed for an extended period of time before it must be exchanged.
  • a water-filtering device which is of the type stated in the introduction to this specification and which according to the present in ⁇ vention is characterised in that the inlet and the second outlet of the valve housing respectively opens into and extends from the circumferential surface defining said substantially cylindrical recess, that the first outlet of the valve housing extends through an end wall defining said substantially cylindrical recess, that the valve body has a through channel extending through the valve body in such a manner that, for a given position of rotation of the valve body, it establishes said connection between the inlet of the valve housing and the second outlet thereof, and that the valve body further has such a bevel at one end thereof that when in another given position of rota ⁇ tion, it establishes said connection between the inlet of the valve housing and said first outlet thereof.
  • the inlet and the second outlet of the valve housing are located diametrically op- posite each other, said channel extends diametrically through the valve body, and the bevel of the valve body is parallel to the channel, the angular distance between said positions of rotation being about 90°.
  • the bevel suitably makes an angle of about 45° with the axis of the valve body.
  • Figs. 1 and 2 show a water-filtering device according to the present invention in vertical section, the device having a valve unit which is shown in a first and a second position, respectively.
  • the water-filtering device shown in the drawing has a filter unit 1 and a valve unit 2 connected thereto. These two units communicate with each other through a passage 3 forming both the first outlet of the valve unit 2 and the inlet of the filter unit 1.
  • the outlet of the filter unit 1 is designated 4, and the inlet and the second outlet of the valve unit 2 are designated 5 and 6, respectively.
  • the device is intended to be connected to a water conduit (not shown). To this end, it has a coupling nut 7 which is screwed on the valve unit 2 and by means of which the de ⁇ vice can be mounted on a tap (not shown) to a water con ⁇ duit.
  • valve unit 2 When the valve unit 2 is in the first position shown in Fig. 1, water drawn from the water conduit through the tap is conducted via the valve unit 2 into and through the filter unit 1 in order to be filtered, and is then dis ⁇ charged through the outlet 4.
  • the valve unit 2 When the valve unit 2 is in the second position shown in Fig. 2, the water is led straight through the valve unit 2 and is discharged through the second outlet 6 thereof. In this case, the water thus is not filtered at all.
  • the essential point of the device is to make it possible to lead the water from the water tap through the filter unit 1 when so desired, for instance when the water should be used for drinking or cooking purposes, and straight through the valve unit 2 without being filtered, for instance when the water should be used as washing water.
  • the filter unit 1 consists of a cylindrical outer container 8 and a cylindrical inner container 9 placed therein and filled with filter material, such as active carbon.
  • the outlet 4 is provided in the bottom of the outer container 8 at the centre thereof.
  • the outer con ⁇ tainer 8 is sealed by a cover 10 screwed thereon, and an intermediate sealing ring 11.
  • An annular sealing flange 12 is integrally formed with the bottom of the outer con ⁇ tainer 8 and spaced a certain distance from the inner wall of the outer container.
  • the sealing flange 12 has a down- wardly increasing outer diameter, making the cross-section of the flange wedge-shaped. The function of the sealing flange 12 will be described in more detail hereinbelow.
  • the inner container 9 accommodating the filter mate- rial is sealed by a cover 13 snapped fast thereon and pro ⁇ vided at its top face with circumferentially evenly di ⁇ stributed pins 14, only two of which are shown in the drawing and against which the cover 10 of the outer con ⁇ tainer 8 is pressed.
  • the cover 13 has a large number of through holes (not shown) which are evenly distributed over the entire surface of the cover.
  • An annular sealing flange 15 is integrally formed with the underside of the inner container 9 and extends along the circumference of the inner container.
  • the inner container 9 and its flange 15 and cover 13 are suitably made of plastic.
  • the cover 10 thereof is screwed on, the inner container being properly de- pressed as a result of the engagement between the pins 14 and the underside of the cover 10.
  • the relation between the diameters of the two sealing flanges 12 and 15 is such that the sealing flange 15, upon such depression of the inner container 9, with its inner side will engage the outer side of the sealing flange 12 and because of the wedge-shaped cross-section of the sealing flange 12 be urged slightly outwards. In this manner, the two sealing flanges 12 and 15 will bring about a highly efficient sealing effect.
  • the outer diameter of the inner container 9 is slightly smaller than the inner diameter of the outer con ⁇ tainer 8.
  • the valve unit 2 consists of a valve housing 17 which is in the form of a cylinder and formed integrally with the outer container 8, preferably made of plastic, of the filter unit 1, and of a valve body 18 accommodated in the cylindrical valve housing 17 and rotatable about its own axis.
  • the valve housing 17 projects at right angles from the outer container 8 at the lower portion thereof, a por ⁇ tion of the wall of the outer container 8 also forming the inner end wall of the valve housing 17.
  • the passage 3 is provided in this end wall and, as seen in the drawing, opens on a level with the sealing flanges 12 and 15.
  • the inlet 5 and the second outlet 6 of the valve unit 2 con ⁇ sist of vertical bores provided diametrically opposite each other in the cylinder wall.
  • the valve housing 17 has an externally threaded pipe socket 19 which surrounds the inlet 5 and which the coupling nut 7 engages, and an externally threaded pipe socket 20 which surrounds the second outlet 6 and supports an outlet strainer 21.
  • the two pipe sockets 19 and 20 are integrally formed with the valve housing 17.
  • the valve body 18 preferably made of plastic, is adequately described as being made from a homogeneous cy ⁇ lindrical body whose outer diameter is equal to the inner diameter of the valve housing 17.
  • a circumferential groove 22 for receiving a sealing ring 23 is provided in the cy ⁇ lindrical body in a position axially outside the bores 5 and 6.
  • the cylindrical body also has a diametrical through bore 24 located axially opposite the bores 5 and 6 and having the same diameter as these.
  • the valve body 18 has a disc 25 whose diameter is equal to the outer diameter of the valve housing 17 and which forms the outer end wall of the valve housing.
  • the disc 25 has a grip portion 26 by means of which the valve body 18 can be rotated.
  • a circumferential groove 27 is formed in the cylindrical body in a position axially oppo ⁇ site a bore located slightly outside the bore 6 in the valve housing 17, for receiving a locking pin 28.
  • the locking pin 28 can be inserted in its bore through the pipe socket 20 and is intended to extend a certain distance into the groove 27 in order to lock the valve body 18 axially.
  • Lugs (not shown) spaced about 90° from each other can be provided in the groove 27 in order, together with the locking pin 28, to limit the range of rotation of the valve body 18 to about 90°, this range of rotation being limited by the positions shown in Figs. 1 and 2.
  • the inner end of the cylindrical body is bevelled so as to form an inclined surface 29 making an angle of about 45° with the axis of the valve body 18.
  • a circum ⁇ ferential groove 30 which is parallel to the inclined surface 29 and adapted to receive a sealing ring 31 is formed in the cylindrical body.
  • a cir ⁇ cumferential groove 32 is formed in the cylindrical body in a position axially outside the groove 22. Between the grooves 27 and 30, the cylindrical body also has material- saving recesses having between them an axial partition 33 (see Fig. 2).
  • valve body 18 occupies the position of rota ⁇ tion shown in Fig. 1, there is established, as appears from the Figure, a connection between the inlet 5 and the first outlet 3 of the valve unit 2.
  • Water drawn from the water conduit is then conducted via the valve unit 2 into the filter unit 1 at the lower part thereof.
  • the water is distributed around the inner container 9 and flows upwards in the annular gap 16.
  • the water is evenly distributed over the entire surface of the cover 13, such that the filter material is efficiently used throughout the entire cross-sectional area of the in- ner container 9.
  • the filtered water is discharged through the outlet 4.
  • valve body 18 When the valve body 18, after a rotation through 90°, occupies the position shown in Fig. 2, there is estab- lished, as appears from this Figure, a connection between the inlet 5 and the second outlet 6 of the valve unit 2, while the sealing ring 31 efficiently seals against the filter unit 1. Water taken from the water conduit is then conducted straight through the valve body 18 in the bore 24 to be discharged through the outlet 6 and the outlet strainer 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Domestic Plumbing Installations (AREA)
  • Multiple-Way Valves (AREA)

Abstract

A water-filtering device which is intended to be connected to a water conduit has a filter unit (1) with an inlet (3), a filter (9) and an outlet (4), and a valve unit (2) with a valve housing (17) and a cylindrical valve body (18) disposed in a cylindrical recess in the valve housing and rotatable about its own axis. The valve housing (17) has an inlet (5) which is intended to be connected to the water conduit, a first outlet (3) communicating with the inlet (3) of the filter unit (1), and a second outlet (6) spaced from the filter unit. The inlet (5) and the second outlet (6) of the valve housing (17) respectively opens into and extends from the circumferential surface of the cylindrical recess, and the first outlet (3) of the valve housing extends through an end wall defining the recess. A through channel (24) extends through the valve body (18) in such a manner that, for a given position of rotation thereof, it establishes a connection, which is sealed with respect to the first outlet (3) of the valve housing, between the inlet (5) and the second outlet (6) of the valve housing. The valve body (18) further has such a bevel (29) at one end thereof that when in another given position of rotation, it establishes a connection, which is sealed with respect to the second outlet (6) of the valve housing, between the inlet (5) and the first outlet (3) of the valve housing.

Description

WATER-FILTERING DEVICE
The present invention relates to a water-filtering device which is intended to be connected to a water con- duit and which has a filter unit with an inlet for receiv¬ ing water from said water conduit, a filter for filtering the water and an outlet for discharging filtered water; and a valve unit with a valve housing having an inlet in¬ tended to be connected to said water conduit, a first out- let communicating with the inlet of the filter unit, and a second outlet spaced from the filter unit, as well as a substantially cylindrical valve body provided in a sub¬ stantially cylindrical recess in the valve housing and ro- tatable about its own axis, said valve body being shift- able between two positions and so designed that when in one of said positions, it establishes a connection, which is sealed with respect to said second outlet of the valve housing, between the inlet of the valve housing and said first outlet thereof, and when in the other of said posi- tions, it establishes a connection, which is sealed with respect to said first outlet of the valve housing, between the inlet of the valve housing and said second outlet thereof.
Ordinary tap water sometimes is of such poor quality that it requires filtering to become fit to drink or usable for cooking purposes. Filtering devices have there¬ fore been developed for domestic use, which are intended to be connected to a water conduit by being mounted on a water tap. A considerable problem encountered in these known filtering devices is that their filter unit soon be¬ comes clogged and therefore must be exchanged at compara¬ tively short intervals.
The object of the present invention is to provide a simple and reliable water-filtering device which is so conceived that the water from the water tap can be led through the filter unit when so desired, for instance when the water should be used for drinking or cooking purposes, and can be led past the filter unit when filtering is not required, for instance when the water should be used as washing water or dishwater, which means that the filter unit can be employed for an extended period of time before it must be exchanged.
This object is achieved by means of a water-filtering device which is of the type stated in the introduction to this specification and which according to the present in¬ vention is characterised in that the inlet and the second outlet of the valve housing respectively opens into and extends from the circumferential surface defining said substantially cylindrical recess, that the first outlet of the valve housing extends through an end wall defining said substantially cylindrical recess, that the valve body has a through channel extending through the valve body in such a manner that, for a given position of rotation of the valve body, it establishes said connection between the inlet of the valve housing and the second outlet thereof, and that the valve body further has such a bevel at one end thereof that when in another given position of rota¬ tion, it establishes said connection between the inlet of the valve housing and said first outlet thereof.
In a very simple embodiment, the inlet and the second outlet of the valve housing are located diametrically op- posite each other, said channel extends diametrically through the valve body, and the bevel of the valve body is parallel to the channel, the angular distance between said positions of rotation being about 90°. The bevel suitably makes an angle of about 45° with the axis of the valve body.
The invention will now be described in more detail with reference to the accompanying drawing.
Figs. 1 and 2 show a water-filtering device according to the present invention in vertical section, the device having a valve unit which is shown in a first and a second position, respectively. The water-filtering device shown in the drawing has a filter unit 1 and a valve unit 2 connected thereto. These two units communicate with each other through a passage 3 forming both the first outlet of the valve unit 2 and the inlet of the filter unit 1. The outlet of the filter unit 1 is designated 4, and the inlet and the second outlet of the valve unit 2 are designated 5 and 6, respectively. The device is intended to be connected to a water conduit (not shown). To this end, it has a coupling nut 7 which is screwed on the valve unit 2 and by means of which the de¬ vice can be mounted on a tap (not shown) to a water con¬ duit.
When the valve unit 2 is in the first position shown in Fig. 1, water drawn from the water conduit through the tap is conducted via the valve unit 2 into and through the filter unit 1 in order to be filtered, and is then dis¬ charged through the outlet 4. When the valve unit 2 is in the second position shown in Fig. 2, the water is led straight through the valve unit 2 and is discharged through the second outlet 6 thereof. In this case, the water thus is not filtered at all. The essential point of the device is to make it possible to lead the water from the water tap through the filter unit 1 when so desired, for instance when the water should be used for drinking or cooking purposes, and straight through the valve unit 2 without being filtered, for instance when the water should be used as washing water.
The filter unit 1 consists of a cylindrical outer container 8 and a cylindrical inner container 9 placed therein and filled with filter material, such as active carbon. The outlet 4 is provided in the bottom of the outer container 8 at the centre thereof. The outer con¬ tainer 8 is sealed by a cover 10 screwed thereon, and an intermediate sealing ring 11. An annular sealing flange 12 is integrally formed with the bottom of the outer con¬ tainer 8 and spaced a certain distance from the inner wall of the outer container. The sealing flange 12 has a down- wardly increasing outer diameter, making the cross-section of the flange wedge-shaped. The function of the sealing flange 12 will be described in more detail hereinbelow.
The inner container 9 accommodating the filter mate- rial is sealed by a cover 13 snapped fast thereon and pro¬ vided at its top face with circumferentially evenly di¬ stributed pins 14, only two of which are shown in the drawing and against which the cover 10 of the outer con¬ tainer 8 is pressed. The cover 13 has a large number of through holes (not shown) which are evenly distributed over the entire surface of the cover. An annular sealing flange 15 is integrally formed with the underside of the inner container 9 and extends along the circumference of the inner container. The inner container 9 and its flange 15 and cover 13 are suitably made of plastic.
When the inner container 9, which as will be readily appreciated can be exchanged in a very simple manner, has been placed in the outer container 8, the cover 10 thereof is screwed on, the inner container being properly de- pressed as a result of the engagement between the pins 14 and the underside of the cover 10. The relation between the diameters of the two sealing flanges 12 and 15 is such that the sealing flange 15, upon such depression of the inner container 9, with its inner side will engage the outer side of the sealing flange 12 and because of the wedge-shaped cross-section of the sealing flange 12 be urged slightly outwards. In this manner, the two sealing flanges 12 and 15 will bring about a highly efficient sealing effect. The outer diameter of the inner container 9 is slightly smaller than the inner diameter of the outer con¬ tainer 8. Thus, between the outer side of the inner con¬ tainer 9 and the inner side of the outer container 8 is formed an annular gap 16. This gap 16 communicates with the valve unit 2 via the first outlet 3 thereof which, as mentioned above, also forms the inlet of the filter unit 1. The valve unit 2 consists of a valve housing 17 which is in the form of a cylinder and formed integrally with the outer container 8, preferably made of plastic, of the filter unit 1, and of a valve body 18 accommodated in the cylindrical valve housing 17 and rotatable about its own axis.
The valve housing 17 projects at right angles from the outer container 8 at the lower portion thereof, a por¬ tion of the wall of the outer container 8 also forming the inner end wall of the valve housing 17. The passage 3 is provided in this end wall and, as seen in the drawing, opens on a level with the sealing flanges 12 and 15. The inlet 5 and the second outlet 6 of the valve unit 2 con¬ sist of vertical bores provided diametrically opposite each other in the cylinder wall.
The valve housing 17 has an externally threaded pipe socket 19 which surrounds the inlet 5 and which the coupling nut 7 engages, and an externally threaded pipe socket 20 which surrounds the second outlet 6 and supports an outlet strainer 21. The two pipe sockets 19 and 20 are integrally formed with the valve housing 17.
The valve body 18, preferably made of plastic, is adequately described as being made from a homogeneous cy¬ lindrical body whose outer diameter is equal to the inner diameter of the valve housing 17. A circumferential groove 22 for receiving a sealing ring 23 is provided in the cy¬ lindrical body in a position axially outside the bores 5 and 6. The cylindrical body also has a diametrical through bore 24 located axially opposite the bores 5 and 6 and having the same diameter as these. Formed on its outer end, the valve body 18 has a disc 25 whose diameter is equal to the outer diameter of the valve housing 17 and which forms the outer end wall of the valve housing. The disc 25 has a grip portion 26 by means of which the valve body 18 can be rotated. A circumferential groove 27 is formed in the cylindrical body in a position axially oppo¬ site a bore located slightly outside the bore 6 in the valve housing 17, for receiving a locking pin 28. The locking pin 28 can be inserted in its bore through the pipe socket 20 and is intended to extend a certain distance into the groove 27 in order to lock the valve body 18 axially. Lugs (not shown) spaced about 90° from each other can be provided in the groove 27 in order, together with the locking pin 28, to limit the range of rotation of the valve body 18 to about 90°, this range of rotation being limited by the positions shown in Figs. 1 and 2. The inner end of the cylindrical body is bevelled so as to form an inclined surface 29 making an angle of about 45° with the axis of the valve body 18. A circum¬ ferential groove 30 which is parallel to the inclined surface 29 and adapted to receive a sealing ring 31 is formed in the cylindrical body. To save material, a cir¬ cumferential groove 32 is formed in the cylindrical body in a position axially outside the groove 22. Between the grooves 27 and 30, the cylindrical body also has material- saving recesses having between them an axial partition 33 (see Fig. 2).
When the valve body 18 is rotated between the posi¬ tions shown in Figs. 1 and 2, the sealing ring 31 passes the bore 5. In order that the sealing ring 31 should not be damaged by the edges of the bore 5, an insert (not shown), e.g. of cruciform cross-section, can be inserted in the bore 5.
When the valve body 18 occupies the position of rota¬ tion shown in Fig. 1, there is established, as appears from the Figure, a connection between the inlet 5 and the first outlet 3 of the valve unit 2. Water drawn from the water conduit is then conducted via the valve unit 2 into the filter unit 1 at the lower part thereof. The water is distributed around the inner container 9 and flows upwards in the annular gap 16. At the upper end of the gap 16, the water is evenly distributed over the entire surface of the cover 13, such that the filter material is efficiently used throughout the entire cross-sectional area of the in- ner container 9. The filtered water is discharged through the outlet 4.
When the valve body 18, after a rotation through 90°, occupies the position shown in Fig. 2, there is estab- lished, as appears from this Figure, a connection between the inlet 5 and the second outlet 6 of the valve unit 2, while the sealing ring 31 efficiently seals against the filter unit 1. Water taken from the water conduit is then conducted straight through the valve body 18 in the bore 24 to be discharged through the outlet 6 and the outlet strainer 21.

Claims

1. A water- iltering device which is intended to be connected to a water conduit and which has a filter unit
(1) with an inlet (3) for receiving water from said water conduit, a filter (9) for filtering the water and an out¬ let (4) for discharging filtered water; and a valve unit
(2) with a valve housing (17) having an inlet (5) intended to be connected to said water conduit, a first outlet (3) communicating with the inlet (3) of the filter unit (1), and a second outlet (6) spaced from the filter unit, as well as a substantially cylindrical valve body (18) pro¬ vided in a substantially cylindrical recess in the valve housing (17) and rotatable about its own axis, said valve body being shiftable between two positions and so designed that when in one of said positions, it establishes a con¬ nection, which is sealed with respect to said second out¬ let (6) of the valve housing, between the inlet (5) of the valve housing and said first outlet (3) thereof, and when in the other of said positions, it establishes a connec¬ tion, which is sealed with respect to said first outlet
(3) of the valve housing, between the inlet (5) of the valve housing and said second outlet (6) thereof, c h a - r a c t e r i s e d in that the inlet (5) and the second outlet (6) of the valve housing respectively opens into and extends from the circumferential surface defining said substantially cylindrical recess, that the first outlet (3) of the valve housing (17) extends through an end wall defining said substantially cylindrical recess, that the valve body (18) has a through channel (24) extending through the valve body in such a manner that, for a given position of rotation (Fig. 2) of the valve body, it estab¬ lishes said connection between the inlet (5) of the valve housing. (17) and the second outlet (6) thereof, and that the valve body (18) further has such a bevel (29) at one end thereof that when in another given position of rota- tion (Fig. 1), it establishes said connection between the inlet (5) of the valve housing (17) and said first outlet (3) thereof.
2. Device as claimed in claim 1, c h a r a c t e r - i s e d in that the inlet (5) and the second outlet (6) of the valve housing (17) are located diametrically oppo¬ site each other, that said channel (24) extends diamet¬ rically through the valve body (18) and that the bevel (29) of the valve body is parallel to the channel (24), the angular distance between said positions of rotation being about 90° .
3. Device as claimed in claim 2, c h a r a c t e r ¬ i s e d in that the bevel (29) makes an angle of about 45° with the axis of the valve body (18).
PCT/SE1989/000195 1988-04-12 1989-04-11 Water-filtering device WO1989009645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8801337A SE8801337L (en) 1988-04-12 1988-04-12 WATER FILTER DEVICE
SE8801337-0 1988-04-12

Publications (1)

Publication Number Publication Date
WO1989009645A1 true WO1989009645A1 (en) 1989-10-19

Family

ID=20371977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000195 WO1989009645A1 (en) 1988-04-12 1989-04-11 Water-filtering device

Country Status (3)

Country Link
AU (1) AU3531689A (en)
SE (1) SE8801337L (en)
WO (1) WO1989009645A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1356854A1 (en) * 2002-04-16 2003-10-29 Water-Planet GmbH Filter device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1261439A (en) * 1917-06-04 1918-04-02 David L Richards Filter.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1261439A (en) * 1917-06-04 1918-04-02 David L Richards Filter.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1356854A1 (en) * 2002-04-16 2003-10-29 Water-Planet GmbH Filter device

Also Published As

Publication number Publication date
SE8801337L (en) 1989-10-13
SE8801337D0 (en) 1988-04-12
AU3531689A (en) 1989-11-03

Similar Documents

Publication Publication Date Title
EP1689507B1 (en) Keyed filter assembly
AU2001255452B2 (en) Keyed filter assembly
EP0792673B1 (en) Water treating apparatus
US4258742A (en) Tapping apparatus
CA1306956C (en) Quick-change filter cartridge and head therefor
KR100975997B1 (en) Keyed system for connection of filter cartridge to filter holder
US7407148B2 (en) Rotary valve assembly for fluid filtration system
MXPA96006189A (en) Filter of a
CA1133028A (en) Fire hydrant nozzle assembly
US3958719A (en) Relating to containers
JPS63503441A (en) Disposable filter twist attachment device
AU2001255452A1 (en) Keyed filter assembly
WO1988008324A1 (en) Quick-change filter cartridge and head therefor
CN211328441U (en) Filter device and filter element
JPH04211794A (en) Nipple and diffusing and filtering device
CA2191851C (en) Valve for bag-in-box
JP4522034B2 (en) Double seal valve
EP0022097A1 (en) Device for transferring fluid to a rotating member
WO1989009645A1 (en) Water-filtering device
US5325887A (en) Connecting device for a sanitary appliance mixing valve
CA1087994A (en) Dirt filter for water pipes
GB2109507A (en) A tap
US4927188A (en) Fitting for connecting a drum to a pipeline
US4278275A (en) Universal coupling adapter for remote fluid cooling or filtering
US3811712A (en) Adapter

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CH DE DK FI GB HU JP KP KR LK LU MC MG MW NL NO RO SD SE SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CM DE FR GA GB IT LU ML MR NL SE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642