WO2008071864A2

WO2008071864A2 - Means for attaching a valve element to a wall

Info

Publication number: WO2008071864A2
Application number: PCT/FR2007/001917
Authority: WO
Inventors: Daniel Mauduit
Original assignee: Daniel Mauduit
Priority date: 2006-11-22
Filing date: 2007-11-21
Publication date: 2008-06-19
Also published as: FR2908799A1; WO2008071864A3; FR2908799B1

Abstract

The invention relates to means for attaching a valve element (5) to a receiving wall (3), including: a ferrule (7) having a first part (70) which is intended to be inserted into a through-hole (O) in the wall (3) and which co-operates with part of the valve element (5) that also extends through said hole (O), and a set of magnetic means (1, 2) designed to co-operate with one another on each side of the receiving face (30) of the wall that is intended to receive the valve element (5), one of said magnetic means (1) engaging with a second part (71) of the ferrule (7) on the side of the receiving face.

Description

FIXING MEANS ¹ ELEMENT TAPS ON

A WALL

The present invention relates to the field of plumbing in general and relates more particularly to a device for fixing a valve element on a wall. It will be described in the following as part of its preferred, but not exclusive, application to the fixing of a valve component of a health distribution station intended for the public (hospitals, industry - particularly food industry - hotels). , etc ...) or for domestic use. It should be noted here that "valve element" means both a complete valve and any constituent part thereof, whether it is the body through which the valve is connected to a set of pipelines. water supply of the distribution station considered (sink, sink, shower, bath, flush, etc ...), the spout through which the water flows, each of the elements allowing manual control and / or regulate, on the dispensing station, the flow of water through said spout (valve, operating handle for a cold water and hot water mixing device, pusher, etc ...) or that it is any accessory element such as, by way of non-exhaustive example, a soap dispenser. In what follows, the name "valve element" will denote any of these components, whether or not taken in combination with one or more of the other components mentioned above.

Similarly, it should be noted in the preamble to the present description that the wall on which the valve element is intended to be fixed may be a horizontal wall such that, by way of non-limiting example, a part of the plane of a sink or sink, or a vertical wall such as, non-exhaustively, a shower partition on which is fixed for example a spout which can be in this case in the form of an apple more or less complex shower watering can. Valves such as those equipping a sink, a sink, a bath, a shower, a flush or any other dispensing station are generally fixed by screwing on one of the walls constituting said dispensing stations or on a wall placed in the vicinity of these. This wall will be designated by the term "home wall" in what follows. Conventionally, these valve elements comprise a threaded portion that can be inserted through a suitable hole in the receiving wall, a threaded portion of which a portion is adapted to extend on the side of said wall opposite to the receiving face of the valve element and which is adapted to cooperate by screwing with a suitable nut to allow the establishment and maintenance of said valve element on said host wall, the latter then being inserted between said nut and said valve element.

However, dirt, limescale contained in water, or cleaning products are deposited and can accumulate at the junction between the wall and the valve element, especially when the wall is horizontal.

These deposits are difficult or impossible to remove without disassembly of the valve element, which is tedious because often the fastening means of the valve element are virtually inaccessible after installation thereof.

In addition to the unpleasant visual appearance that results, there is a risk of accumulation of pathogens that can form foci of contamination or extension of diseases, especially in sensitive places such as hospitals (nosocomial diseases ... ) or agri-food companies.

Furthermore, when the valve element considered is the valve as a whole, it comprises various parts that are difficult to clean because they are often inaccessible except by disassembly with tools. In order to facilitate cleaning, solutions are known in which removable corollas are mechanically bonded to each other around the exposed threaded portion on the receiving face of a valve. However the mode of extraction of these corollas is not practical and the presence of the latter is constraining in terms of design possibilities.

The object of the present invention is to propose a device for fixing a valve element on a wall, a device that makes it possible to remove this valve element simply and quickly without the need to use tools, in order to at the same time, to facilitate repair or replacement of said valve element, and, secondly, to allow easy access to the entire wall for cleaning.

For this purpose, the invention relates to means for fixing a valve element on a receiving wall, said fixing means comprising a ring of which a first portion is adapted to be inserted into a reception opening passing through said wall cooperating with a portion of said valve element also passing through said orifice, said fixing means further comprising a set of magnetic means capable of mutually cooperating on each side of the receiving face of the wall intended to receive said element of tap, one of said magnetic means bearing a second portion of said ring on the side of said receiving face.

For clarity in what follows, will be designated by "lower" and "upper" the components of the valve element and fastening means according to the invention with respect to their position when the receiving face is the upper face , visible by the user, a horizontal wall such as that of a plane of a sink or a washbasin, configuration for which the invention will be described in what follows. Such a designation is however in no way limiting the actual positions of these different components in space for different relative arrangements of the wall and the valve element to be fixed. According to a particular embodiment of the invention, the first part of the ring is of generally cylindrical general shape and is extended at its upper end by a ring constituting the aforementioned second part of said ring. The inner diameter of this ring is substantially equal to the diameter of the receiving orifice, and its outer diameter is greater than this. According to the invention, the largest diameter of the first portion of the ring is slightly smaller than the diameter of the receiving port, to allow the insertion of said ring into said orifice without the need to use a specific tool. In this case, by way of nonlimiting example, said first portion of said ring is screwed onto a threaded portion of the valve element through the aforementioned orifice. Advantageously, the threaded portion of said valve element may have a substantially oblong shaped section comprising at least one straight segment, the cooperating portion of said ring then taking the form of a flat nut.

The fitting of the valve element on the receiving wall is then successively carried out by assembling said valve element with said ring, then by inserting the assembly thus formed into the receiving orifice, the ring aforementioned then bearing on the receiving face defined above, and the upper face of said ring receiving one of the aforementioned magnetic means which is intended to be placed on the side of said receiving face. According to another advantageous embodiment of the invention, the aforementioned ring is integrated into the reception wall during the production thereof. This embodiment will be more particularly, but not exclusively, preferred especially in the case where the receiving wall is a thin wall, for example made by molding a plastic material, the molding of the aforementioned ring can then be performed simultaneously to the molding of the home wall. The aforementioned ring may also be in the form of an insert, for example metal, placed in a recess provided for this purpose in the receiving wall for example of a sanitary element made of sandstone or ceramic. In these different cases, the installation of the valve element on the receiving wall can be achieved by simply inserting it into the reception opening. According to yet another embodiment of the invention, the ring is advantageously integrated with the valve element during manufacture of the latter. As before, the installation of the valve element on the reception wall is then performed by simply inserting it into the reception opening.

It follows from the foregoing that in all cases, to remove the valve element from the receiving wall, it is sufficient to pull it upwards, the first part of the ring, or the element valve assembly itself, then sliding in the hole of the home wall, and the force exerted for this traction to overcome the magnetic attraction created by the aforementioned magnetic means. It goes without saying that the lengths of any pipes for supplying water to said valve element will advantageously be dimensioned by those skilled in the art to allow this traction and this withdrawal, and it should be noted that these operations will be facilitated. by the use of flexible pipes. The invention thus achieves one of its aims, by proposing a fastening means which allows a quick and easy removal, without tools, of the valve element once it has been put in place on the receiving wall. It should be noted that the removal of the valve element allows complete accessibility to the periphery of the receiving orifice for optimal cleaning of the wall.

According to another of its characteristics, the fastening means according to the invention also comprise a flange adapted to be placed, on the one hand, in abutment on the reception face defined above, and, on the other hand, on a shoulder formed in the lower part of the valve element. This collar thus defines a receiving cavity of the aforementioned magnetic means disposed on a portion of the ring located on the side of the aforementioned receiving face and the second portion of said ring, and protects these components from any external dirt. It also makes it possible to hide these components from the view of the user. Advantageously, this collar, visible by the user of the valve element, is made of a decorative material and has a aesthetic shape determined according to the shape of said valve element.

According to an advantageous embodiment of the invention, the aforementioned magnetic means are in the form of washers whose inside diameter is slightly greater than the diameter of the receiving orifice, and whose outer diameter is smaller than the outside diameter of said Ring. It should however be noted that this form is not exclusive, and that said magnetic means may have any other form compatible with their implementation on either side of the receiving face.

According to various embodiments of the invention, the magnetic means may consist of two permanent magnets, or a single permanent magnet and a ferrous mass that can be attracted by the magnetic field created by said permanent magnet. In all cases, these magnetic means are dimensioned so as to create sufficient attraction on either side of the receiving face to allow the retention of the valve element on the receiving wall. Preferably, but in a nonlimiting manner, said magnetic means are placed facing each other on either side of the receiving face.

According to one characteristic of the invention, one of the magnetic means is connected to the receiving wall by an appropriate interface. Thus, according to various embodiments of the invention, non-limiting, it can be glued, screwed, inserted by force in said wall, or placed in a housing provided for this purpose in this wall, or embedded in the mass of material constituting the wall.

According to another advantageous embodiment of the invention, this magnetic means can be inserted into the thickness of a substantially cylindrical portion of the projecting wall on the side of the receiving face and forming a receiving collar of the element of faucets. In this case, this magnetic means will preferentially, but not exclusively, placed in the vicinity of the projecting end of said collar to facilitate magnetic attraction with the cooperating magnetic means placed on the side of the receiving face. This embodiment has a notable advantage in that, once the valve element has been removed from the receiving wall, the wall can be easily cleaned as close as possible to the reception opening without products used for this cleaning accidentally fall into said hole, which may then pollute or damage the parts under the wall. It should be noted that this problem can also be solved by producing, on the receiving wall, in the vicinity of the reception opening, a bead forming retaining dike of said cleaning products or other liquids, bead on which, according to the embodiment considered, the lower face of the end ring of the ring described above, or the valve element itself, is advantageously placed in support. The invention thus achieves another of its aims by allowing a complete and safe cleaning of a maximum surface of the reception wall in the vicinity of the reception opening.

According to yet another advantageous embodiment of the invention, this magnetic means can be inserted into the aforementioned ring.

According to another particular embodiment of the invention, one of the magnetic means is integrated in the valve element. In combination with the particular embodiment described above in which the cooperating magnetic means is inserted in a projecting collar of the receiving wall, this embodiment of the invention makes it possible to fix the valve element to the wall without adding any third party link.

According to another characteristic of the invention, and in order to avoid that the valve element, once in place, may be rotatable about itself about the axis of the orifice or home move in the latter, the fastening means according to the invention comprise a set of complementary shapes, one of which is connected to the valve element and the other is secured to the home wall to allow blocking radial of said valve element once it is set up on said host wall. The cooperation of these complementary shapes also constitutes an indexing for the positioning of the valve element relative to the receiving wall. According to a preferred embodiment of the invention, the outer face of the first portion of the aforementioned ring is advantageously provided with a shape adapted to cooperate with a complementary shape formed on the wall of the receiving orifice to achieve the radial blocking of the valve element once it has been put in place in said reception opening.

According to different embodiments, the shape formed on the outer face of the ring is a lug or a groove, the shape formed on the wall of the receiving hole then being respectively a groove or a complementary lug. The mounting of the valve element being effected, as has been specified above, successively by assembling it with the ring, then by insertion of the assembly thus formed in the receiving orifice, the cooperation of the aforementioned complementary forms leads to the desired radial blocking. It should be noted here that the presence of the above-mentioned form on the outer face of the first part of said ring does not call into question the possibility of sliding of said ring in the reception opening, as well as for setting up only for the removal of the valve element.

According to another variant embodiment, it is the part of the valve element which extends below the face of the receiving wall opposite to the receiving face which is carrying the shape able to cooperate with the complementary shape formed on the wall of the reception opening. According to another variant, this form is carried by a specific intermediate piece of the fastening means according to the invention. This intermediate piece is then distinct from the ring and is attached to the part of the valve element which extends below the face of the receiving wall opposite to the previously defined receiving face. The invention thus achieves the goals it has set for itself and proposes a simple fixing device for a valve element, a fastening device that allows rapid removal of said element without the need for any tooling, as well as optimal cleaning of the receiving face in the vicinity of the orifice in the wall to accommodate said valve element.

It should be noted that the invention can be applied to any type of reception wall, that it has a relatively large thickness (typically at least ten millimeters) or that it is thin.

In the latter case, according to a particular embodiment of the invention, the outer face of the lower end of the first portion of the ring, which extends below the underside of the receiving wall, is provided with a thread adapted to cooperate with a suitable nut, and the first portion of said ring has a length such that it allows the insertion, between the upper part of said thread and said lower face of the reception wall, magnetic means for being bonded to said wall. The latter is then stuck between the underside of the docking wall and the upper face of the nut screwed onto the aforementioned thread. Advantageously, the outer diameter of this thread is substantially less than the inside diameter of the receiving orifice, so that the ring can slide without difficulty through it.

This particular embodiment also has the additional advantage that it allows the attachment means according to the invention to be adapted to any type of reception wall, whether or not the latter is provided with an interface. home mentioned above for one of said magnetic means, and whether or not a thin wall.

The invention also extends to a valve element provided with an actuator for a liquid retention valve, valve element adapted to be fixed on a home wall by means of fixing means according to the invention. In this case, the rod of the actuator is provided with two teeth adapted to be placed on either side of the lever arm of said actuator. By raising or lowering the actuator stem by means of a suitable operating handle, the lever arm is raised or lowered. This having an axis of rotation, the liquid retention valve is thus maneuvered. To achieve the removal of the valve element, the invention provides for uncoupling said teeth of said lever arm, for example by performing a 90-degree rotation of the actuator rod by means of the aforementioned operating handle, in order to disengage the rod of the actuator and the lever arm.

The characteristics described above, as well as others, will become more apparent on reading the following description, which is illustrated by the following figures: FIG. 1 represents a partial sectional view of an embodiment of the invention on a horizontal wall,

FIG. 2 represents a detail of a particular embodiment of the magnetic means,

FIG. 3 represents a partial sectional view of an embodiment of the invention on a vertical wall

FIG. 4 is a sectional view of a particular embodiment of the ring of the fastening means according to the invention,

- And Figure 5 shows a schematic view of a particular embodiment of the invention, wherein the valve element is associated with a valve actuator for liquid retention.

As before, the following will be referred to as

"lower" and "upper" the components of the valve element 5 and fastening means according to the invention with respect to their position when said valve element 5 is received by the upper face 30

(or face of reception), visible by the user, of a horizontal wall 3 such as that of a plane of a sink or sink on which said valve element 5 is attached, an arrangement in which the invention will now be described. As has been recalled above, such designation is however in no way limiting the actual positions of these different components in space for different relative arrangements of the wall 3 and the valve element 5 to fix.

With reference to FIG. 1, the fixing means according to the invention comprise in particular a ring 7, as well as magnetic means 1 and 2 and a flange 9. According to the invention, the magnetic means 1 and 2 are each placed one side of the receiving face 30.

As mentioned above, the magnetic means 1 and

2 may consist of a set of permanent magnets or a single permanent magnet and an ferrous mass, the only constraint being that the magnetic attraction generated between them is sufficient to maintain the valve element 5 in place on the wall of welcome 3.

Referring to Figure 1, the ring 7 is composed of a substantially cylindrical portion 70 terminating at its upper part by a ring 71. The outer diameter of the cylindrical portion 70 is slightly smaller than the diameter of the orifice O home of the valve element 5 on the receiving wall 3. The inner diameter of said substantially cylindrical portion 70 is slightly greater than the outer diameter of the lower part of the valve element 5, lower portion adapted to be inserted into the reception opening O and to extend substantially below the face 31 of the reception wall 3 opposite to the reception face 30.

According to the invention, the ring 7 and the valve element are interconnected. Thus, according to a particular embodiment of the invention, the ring 7 is integrated with the valve element 5 during the manufacture of the latter. According to the embodiment of the invention presented by the 1, the ring 7 is screwed onto the threaded lower part 4 of said valve element 5.

The fitting of the valve element 5 on the reception wall 3 is then carried out in the following manner: the magnetic means 1 is associated with the ring 7,

the assembly thus formed is first assembled with said valve element,

- Then the whole is inserted into the receiving hole O, the lower face of the end ring 71 of the ring 7 then coming to bear against the receiving face 30 of the receiving wall 3.

The holding in place of the valve element 5 is then provided by the magnetic attraction established between the magnets or other magnetic means 1 and 2. For this purpose, according to a feature of the invention, the magnet or magnetic means 2 is advantageously connected to the reception wall 3 by an appropriate interface. Thus, according to the embodiment shown in FIG. 1, the magnetic means 2 is glued to the lower face 31 of the reception wall 3.

According to another advantageous embodiment of the invention, more specifically represented in FIG. 2, the magnetic means 2 is inserted into a housing 32 provided for this purpose in a substantially cylindrical collar 33 projecting on the wall 3 on the side of the face. 30, around the receiving orifice O. The lower face of the ring 71 of the ring 7 is then placed in abutment on the end face of said collar 33. This embodiment has the additional advantage of allowing after the valve element has been removed, cleaning of the receiving face 30 as close as possible to the receiving opening O without the risk that cleaning products or other liquids will penetrate said orifice. According to the embodiment represented by FIG. 2, the opening opening of the housing 32 at the upper end of the collar 33 is closed by means of a suitable shutter 34. According to another advantageous embodiment, not shown in the figures, the opening opening of the housing 32 is located in the lower part of the collar 33, the housing 32 then extending to within said collar from the face of the receiving wall opposite to the receiving face 30. In this case, a paint containing iron filings may advantageously be deposited on the inner upper face of the housing 32 to ensure maintaining the magnetic means 2 (in this case necessarily a magnet) by suspension in said housing 32. According to a variant of these embodiments, the magnetic means 2 can be embedded in the mass of the material forming the collar 33.

It should also be noted that this embodiment is of particular interest in the case, also shown in FIG. 2, where the magnetic means 1 intended to be placed on the side of the receiving face 30 is integrated with the valve element. 5. For example, as shown in Figure 2, the magnetic means 1 can be inserted into a suitable housing 51 formed in said valve element 5. In this case, the ring 7 is integrated with the valve element 5, the fixing of the latter on the reception wall 3 may be envisaged by simply placing said valve element in abutment on the upper end of the collar 33.

According to an alternative embodiment not shown in the figures, a bead can advantageously be formed on the receiving face 30, around the reception opening O, to act as a dam for retaining the aforementioned maintenance products. In order to protect said end ring 71 and said magnet or other magnetic means 1 from any external dirt and to conceal these elements in the view of the user, a flange 9 is advantageously inserted between the receiving face 30 and a suitable shoulder 50 arranged in the lower part of the valve element 5 (see Figure 1). The flange 9, substantially hemispherical, forms a cavity 90 for receiving the magnetic means 1 and the portion 71 of the ring 7. Advantageously, the flange 9 has a decorative appearance consistent with the decorative aspect and the design of the valve element 5.

The removal of the valve element is effected by simple traction exerted with sufficient force to overcome the magnetic attraction of the means 1 and 2. Advantageously, as has been specified above, the skilled person where appropriate, provide for sufficient lengths and flexibility of the water supply pipes of the valve element to allow easy disengagement of the latter, for example by equipping said valve element with flexible pipes.

In order to prevent any inadvertent movement of the valve element once it has been put in place on the reception wall 3, the invention provides means for radially locking said valve element in the reception opening O. According to the invention, the outer face of the lower portion 70 of the ring 7 is provided with a specific shape 72 adapted to cooperate with a complementary shape 35 (not detailed in the figures) made on the wall of said orifice O to allow a radial locking of said ring therein. According to a preferred embodiment of the invention, the ring 7 thus has, on at least part of the height of the outer face of its lower portion 70, a groove 72 adapted to cooperate with a complementary bead 35 (not shown in FIG. the figures) extending over the entire height of the wall of the orifice O. The valve element 5 is thus locked in rotation once installed on the wall 3. According to alternative embodiments of the invention (no represented by the figures), the complementary shape of the aforementioned form 35 may be carried by an intermediate piece (not represented by the figures) inserted around the lower part of the valve element 5 under the lower end of the ring 7 or may be carried by the lower part of the valve element 5 itself.

It should be noted that the aforementioned system may be associated with a "quarter turn" or "bayonet" type device to limit the risk of theft of the valve element. In this case, the groove 72 preferably extends in the lower part of the portion 70 of the ring 7, and is advantageously associated with a device suitable for providing the aforementioned radial blocking: by way of nonlimiting example, embodiment of a set of cooperating abutments on the ring 7 and on the lower face 31 of the wall 3.

In Figure 3, we see the fastening means according to the invention for fixing on a vertical wall 3 of a valve element 5 such as a spout. According to another advantageous embodiment of the invention, more specifically illustrated in FIG. 4, the ring 7 participates in the setting up of the magnetic means 2 intended to be connected to the reception wall 3. For this purpose (see 4), the portion 70 of the ring 7 comprises, near its lower end, a thread 73 adapted to receive a locking nut 8, and said portion 70 is of a length substantially equal to the height of the orifice 0 (that is to say the thickness of the wall 3) increased by the thickness of the magnetic means 2. The latter, which is then here preferably in the form of a washer, is then inserted between the lower face 31 of the reception wall 3 and the upper face of said nut 8 which allows it to be locked in its position. This embodiment has several advantages. In the first place it is particularly advantageous in the case where the thickness of the wall 3 is too small to be able to house an interface for receiving said magnetic means 2, or in the case where the material constituting said wall 3 does not allow for bonding said magnetic means. Furthermore, it allows the establishment of the fastening means according to the invention on any type of home wall, including in the case where it is not provided with a home interface of said magnetic means 2 It should be noted that, according to a variant of this embodiment, the magnetic means 2 can be inserted in a housing provided for this purpose in the ring 7, the latter being, as specified above, locked against the face 31. of the reception wall 3 by means of the nut 8. In the case where the fixing means which have just been described are intended to be used with a valve element provided with an actuator for a liquid retention valve, the invention provides a specific configuration of said actuator to enable the retention of the valve. possibility of removal of said valve element without the use of specific tools. In this case, as shown in Figure 5, the rod 15 of said actuator, connected to a handle 18, is provided at its lower end, two teeth 190 and 191 able to be placed on either side the lever arm 20 of the control device of the liquid retention valve, said lever arm 20 advantageously having an axis of rotation 26. When the actuator is operated according to one or other of the directions indicated by the double arrow F in Figure 4, the cooperation of teeth 190 and 191 above with the lever arm 20 allows the movement of the retention valve 17. To easily remove the valve element 5 associated with such an actuator of the wall 3 by simply pulling as permitted by the invention, it is then sufficient to release said teeth 190 and 191 of said lever arm 20. This can be done by simply rotating 90 degrees of the rod 15, rotation controlled by the handle 18. The rod 15 is then disengaged from the b Lever flange 20 and the valve element 5 can be removed by simply pulling as described above.

The invention thus makes it possible simply and quickly to fix any valve element on any type of receiving wall. By the fixing method that it provides and the means it implements, it also allows a simple and quick withdrawal by simply pulling said valve element, and without the need to use any tool. It therefore simplifies all the maintenance or repair operations of this valve element. It also offers the possibility of a complete and precise cleaning of the surface of the reception wall in the vicinity of the reception opening of said valve element, which makes its use particularly interesting in environments in which the protection against any form of contamination is sought (hospital environment, food industry, public places, etc ...).

It should be noted, however, that the invention is not limited to the means and methods of implementation described above, but that it also extends to any technically operating variant of equivalent means allowing the same results, as well as to any combination of such means. In particular, the shape and the nature of the radial blocking means of the valve element in the reception opening O are not limited to the forms described, and it is possible to envisage, in place of the embodiment of complementary shapes. on the ring 7 and the wall of the orifice O, the implementation of oblong or other shaped elements allowing the desired blocking. Likewise, the shape of the magnetic means 1 and 2, as well as the nature of the material constituting them, may be arbitrary insofar as they make it possible to achieve the desired result of maintaining the valve element 5 on the wall of the device. reception 3 without recourse to another means of restraint.

Finally, it should be noted that, if the ring 7 can be integrated into the valve element 5, it can also, according to an advantageous variant of the invention, be integrated into the reception wall 3. In particular, but non-exclusively, in the case where the receiving wall 3 is made by molding a plastic material, the ring 7, which then advantageously incorporates a thread 73 such as that shown in Figure 4, can be molded simultaneously with said receiving wall 3 to be an integral part thereof.

Claims

Means for fixing a valve element (5) on a reception wall (3), characterized in that they comprise a ring (7), a first part (70) of which can be inserted into a reception opening (O) passing through said wall (3) cooperating with a part of said valve element (5) also passing through said orifice (O), and in that they also comprise a set of magnetic means (1 , 2) adapted to mutually cooperate on each side of the receiving face (30) of the wall intended to receive said valve element (5), one of said magnetic means (1) bearing against a second part ( 71) of said ring (7) on the side of said receiving face.

2. Means according to claim 1, characterized in that they comprise a flange (9) adapted to be inserted between the receiving face (30) of the valve element (5) on the receiving wall (3) and a shoulder (50) of said valve member for protecting said magnetic means (1) and said second portion (71) of the ring (7) from any external fouling.

3. Means according to either of claims 1 or 2, characterized in that the outer face of the first portion (70) of the ring (7) is provided with a shape (72) adapted to cooperate with a complementary shape (35) formed on the wall of the receiving orifice (O) to allow radial locking of the valve element (5) in said orifice (O).

4. Means according to any one of claims 1 to 3, characterized in that one of the magnetic means (2) is connected to the receiving wall (3).

5. Means according to claim 4, characterized in that said magnetic means (2) is housed at the end of a collar (33) of the wall (3) extending around the receiving orifice ( O), beyond said wall (3) on the side of said receiving face (30).

6. Means according to any one of claims 1 to 5, characterized in that the first portion (70) of the ring (7) comprises a thread (73) adapted to cooperate with a nut (8) to allow blocking, between said nut (8) and the receiving wall (3) of one of the magnetic means (2).

7. Means according to any one of claims 1 to 6, characterized in that one of the magnetic means, (1), is integrated with the valve element (5).

8. Valve element (5) characterized in that it comprises a housing (51) adapted to accommodate one of the magnetic means, (1) fixing means according to any one of claims 1 to 7 of said element taps on a wall of reception (3).

9. Valve element characterized in that it comprises a portion adapted to be inserted into the ring (7) of fastening means according to any one of claims 1 to 7, and in that it comprises a valve actuator detachable liquid retention device whose rod (15) is equipped, at its end opposite its end provided with maneuvering means (18), teeth (190, 191) able to be placed on either side of a lever arm (20) of said actuator, and in that said teeth (190, 191) can be disengaged from said lever arm (20) by simple rotation of said operating means (18) to allow withdrawal of said valve element from the wall (3) by simply pulling on said valve element.

10. Sanitary element comprising a receiving wall (3) for a valve element (5), characterized in that said receiving wall comprises a collar (33) projecting from the side of the receiving face (30) around a receiving orifice (O) formed in said receiving wall (3), and in that said collar (33) comprises means for accommodating a magnetic means (2) of fastening means according to one any of claims 1 to 7.