Liquid product dispenser

Abstract

A fluid product dispenser (D) comprising: - a reservoir (R) defining a bottom (R1) and an opening (R2), and - a dispensing head (T) incorporating a dispensing element (P) defining a venting path through which outside air can enter the reservoir (R), the dispensing element (P) comprising a dip tube (TP) extending into the reservoir (R), the dip tube (TP) comprising an inlet (Ti) near the bottom (R1) of the reservoir (R), characterized in that the inlet (Ti) of the dip tube (TP) is provided with a shut-off valve (V) comprising a moving part (V6) and a seat (V5), the moving part (V6) is in tight contact with the seat (V5) by the fluid product when the dispenser (D) is upside down, while the moving part (V6) is moved away from the seat (V5) by the fluid product when the dispenser (D) is upright. the location. "Figure for the abbreviation: figure 3"

Description

Title of the invention: Fluid product dispenser

[0001] The present invention relates to a fluid product dispenser comprising: - a fluid product reservoir defining a bottom and an opening, and - a dispensing head mounted on and in the opening of the fluid product reservoir, the dispensing head incorporating a dispensing element, such as a pump, defining a venting path through which outside air can enter the interior of the fluid product reservoir, the dispensing element further comprising a dip tube extending into the reservoir, the dip tube comprising an inlet near the bottom of the fluid product reservoir.

[0002] The distribution element generally comprises a reciprocating actuating rod that communicates with the plunger tube through a chamber and at least one inlet and / or outlet valve. The distribution head also comprises a pusher that is removably mounted on the actuating rod.

[0003] This is a perfectly conventional design for a manual dispenser used in the perfume, cosmetics, and pharmaceutical industries. The user presses the button, thereby pushing in the actuating rod, which forces the fluid from the chamber through the forced-open outlet valve. When the pressure on the button is released, fluid from the reservoir is drawn into the chamber through the dip tube and the inlet valve. Simultaneously, outside air enters the reservoir through the open vent to compensate for the volume of fluid drawn in by the dispensing mechanism. Thus, the reservoir is always at atmospheric pressure. The outlet valve and the vent are opened by pushing in the actuating rod. This is a perfectly conventional operation for a manual dispenser.

[0004] When the reservoir is empty, it is sometimes possible to fill it, when the distribution head is removable, for example by unscrewing.

[0005] Document EP3310491 describes a particular filling method that does not require removing the dispensing head. It is sufficient that the plunger be removable, which is the case for most dispensers. Thus, after removing the plunger, the dispenser is inverted, and the fluid product is injected under pressure into the tank, not through the actuating rod, chamber, and dip tube, but through the venting passage, which is forced open by pushing in, even partially, the actuating rod. The air contained in the tank is then forced out through the dip tube, chamber, and actuating rod: the connection is opened by pushing in the actuating rod.

[0006] When the fluid filling the tank reaches the inlet of the dip tube (which is inverted), it is discharged through the dip tube. This excess fluid discharged through the dip tube is collected by an absorbent ring, which must then be discarded. Furthermore, the tank is overfilled because it no longer contains the minimum air volume required to compensate for temperature and / or pressure variations. Filling according to this document leads to a double disadvantage: a hazardous tank and waste (the ring soaked with fluid).

[0007] The object of the present invention is to remedy the aforementioned drawbacks of this prior art document by preventing overfilling of the tank and by eliminating the spillage of the overflow through the dip tube.

[0008] To this end, the present invention proposes a fluid product dispenser comprising: - a fluid product reservoir defining a bottom and an opening, and - a dispensing head mounted on and in the opening of the fluid product reservoir, the dispensing head incorporating a dispensing element, such as a pump, defining a venting path through which outside air can enter the interior of the fluid product reservoir, the dispensing element further comprising a dip tube extending into the reservoir, the dip tube comprising an inlet near the bottom of the fluid product reservoir, characterized in that the inlet of the dip tube is provided with a stop valve comprising a moving part and a seat, the moving part is forced into tight contact with the seat by the fluid product when the distributor is upside down with the fluid product reservoir disposed above the distribution head, whereas the moving part is forced away from the seat by the fluid product when the distributor is right side up with the distribution head disposed above the fluid product reservoir.

[0009] Thus, when the inverted tank is filled using the method described in document EP3310491, the shut-off valve will close the inlet of the dip tube as soon as the fluid reaches its level. Its moving part is displaced by the fluid against the seat, thereby cutting off communication with the dip tube. Consequently, the fluid cannot be discharged through the dip tube.

[0010] Advantageously, the moving part has a lower density than the fluid product, so that it floats in the fluid product. The moving part may be made of a solid material whose density is lower than that of the fluid product and / or contain air or another gas.

[0011] According to another aspect of the invention, the fluid product reservoir with the dispensing head mounted on it and inside it defines a usable volume, the seat being disposed in the A fluid reservoir is positioned near the bottom to maintain sufficient air in the fluid reservoir, which is filled with fluid via the venting path with the distributor inverted, to absorb pressure and / or temperature variations. The shut-off valve allows the remaining air quantity to be adjusted to a value that ensures the distributor's integrity even under significant temperature and / or pressure fluctuations.

[0012] According to one feature of the invention, the stop valve may include a valve body forming the seat and a connecting sleeve for the inlet of the plunger tube, the moving member being captive in the valve body with an axial degree of freedom allowing it to come selectively into tight contact with the seat.

[0013] According to one embodiment, the moving part may be a hollow ball. In this case, the seat and the ball may be arranged next to the dip tube.

[0014] According to another embodiment, the moving member can be a cap engaged around the valve body, the seat extends around the plunger tube and the cap defines an annular contact area intended to come into tight contact with the seat, this annular contact area extending around the plunger tube.

[0015] It is clear that the shut-off valve of the present invention considerably improves the filling process described in document EP3310491. Instead of discharging the excess fluid into the absorbent ring, the valve of the invention closes the dip tube. Fluid injection can continue after the shut-off valve closes, leading to overpressure in the reservoir, which results in the compression of the remaining air.

[0016] To mitigate or prevent this overpressure in the tank, the shut-off valve can be equipped with a device that provides perceptible information, in particular a sound audible to a user. This perceptible information is generated in response to an airflow passing through the shut-off valve. For example, a sound-emitting device can be provided that emits a sound generated by the passage of the airflow. The sound can be continuous, like a whistle, or intermittent, like a clicking. It can be amplified by the tank walls. The user is thus informed of the tank's refilling when the sound stops. It is also possible to modify the sound of the device when the valve's moving part moves toward its seat: the user perceives this change in sound and then knows that the tank is almost full. At worst, the cessation of the sound indicates that the tank is full.One can even imagine that the sound is produced by the valve mechanism moving under the effect of the airflow. The valve ball, for example, could move and strike against the valve body, thus generating a sound perceptible to the human ear. Instead of, or in addition to, sound, the device could generate a vibration perceptible to the touch.

[0017] The present invention also defines an assembly comprising a source of fluid product, an adapter defining a filling duct and a venting duct, and a distributor according to any one of the preceding claims, the adapter enabling the fluid product source to be connected to the distributor to achieve a crossover of fluid product and air flow, the adapter being provided with a device delivering perceptible information, in particular a sound perceptible to a user, the perceptible information being generated in response to an airflow passing through the air duct of the adapter.

[0018] Alternatively, a detector can be provided that detects the absence of airflow; the detector then sends a stop signal that halts the injection of the fluid product. This is an active, or even electronic, version, whereas the device mentioned above is passive.

[0019] The present invention also defines a method for filling a distributor as defined above, the dispensing head comprising a pusher removably mounted on an actuating rod in fluid communication with the dip tube through a chamber and at least one valve, the method comprising the following steps: a- Remove the pusher from the actuating rod, b- Position the dispenser upside down with the fluid product reservoir positioned above the dispensing head. c- Push in the actuating rod to open the venting path and fluid communication between the actuating rod and the dip tube, d- Inject fluid product through the venting path, allowing air from the tank to escape through the dip tube and actuating rod, until the fluid product injected into the tank forces the moving part into tight contact with the seat.

[0020] The spirit of the present invention is based on using the Archimedes' thrust of the fluid product stored in the upside-down tank to actuate a stop valve which blocks access to the dip tube, in order to prevent overfilling of the tank and overflow through the dip tube.

[0021] The invention will now be described more fully with reference to the accompanying drawings, giving, by way of non-limiting examples, two embodiments of the invention.

[0022] In the figures:

[0023] [Fig.1a] Fig.1a is a schematic vertical cross-sectional view through a fluid product dispenser according to the invention arranged upside down and ready to be connected to an adapter mounted on a fluid product source,

[0024] [Fig.lb] [Fig.lb] is a view similar to that of [Fig.la] with the distributor of the invention connected to the adapter,

[0025] [Fig.2] Fig.2 is a highly enlarged view of a detail of Fig.1b showing the adapter connecting the source to the distributor,

[0026] [Fig. 3] Fig. 3 is a vertical cross-sectional view through another dis Attributor of the invention,

[0027] [Fig. 4a] Figures 4a and 4b are views illustrating the stop valve according to a first embodiment of the invention in open and closed positions respectively,

[0028] [Fig.4b] cf [Fig.4a]

[0029] [Fig.4c] Fig.4c is an exploded view of the stop valve according to this first mode of realization of the invention,

[0030] [Fig. 5a] Figures 5a and 5b are views similar to Figures 4a and 4b re featuring a stop valve according to a second embodiment of the invention,

[0031] [Fig.5b] cf [Fig.5a]

[0032] [Fig. 6a] Figures 6a and 6b are views similar to Figures 4a and 4b for a a stop valve according to a third embodiment of the invention,

[0033] [Fig.6b] cf [Fig.6a]

[0034] [Fig.6c] Fig.6c is an exploded view of the stop valve of Figures 6a and 6b,

[0035] [Fig. 7] Fig. 7 is a view of a distributor of the invention incorporating the valve stopping figures 6a to 6c in normal operating position,

[0036] [Fig.8] The [Fig.8] is a view similar to the [Fig.2] showing an alternative embodiment for the adapter of the invention.

[0037] Figures 1a and 1b each represent an assembly comprising on the one hand a fluid product distributor D and on the other hand a fluid product source S. The distributor D may have a completely conventional design for an air-recovery distributor: its only originality comes from a stop valve V mounted at a free end Ti of a dip tube TP.

[0038] Thus, the distributor D comprises a fluid product reservoir R defining a bottom RI and a neck R2. The distributor D also comprises a dispensing head T which allows the fluid product stored in the reservoir R to be drawn and dispensed, in particular in spray form. The dispensing head T comprises a dispensing element P, which may be a pump or a valve. This dispensing element P is mounted on and in the neck R2 of the reservoir R by means of a fitting F, which may be conventional. The dip tube TP extends from the dispensing element P to near the bottom RI of the reservoir R. Although not shown in Figures 1a and 1b, the distributor D also comprises a plunger mounted on the dispensing element P. In Figures 1a and 1b, this plunger has been removed.The distributor D, without its pusher, was arranged upside down, with the reservoir R above the distribution unit P, so that it could be associated with the fluid product source S.

[0039] This source S comprises a source reservoir SI preferably containing pressurized fluid product. Source S is equipped with a source valve S2, through which the pressurized fluid product can be dispensed. Source S has an adapter A which allows connection of the distributor D, in order to inject pressurized fluid product from source S into the reservoir R of the distributor D. The distributor D is therefore associated with the adapter A in the inverted position, as can be seen in [Fig.lb].

[0040] In [Fig.2], the distribution unit P and the adapter A can be seen in more detail.

[0041] The distribution element P comprises a body PI which forms at its end su A collar P2 is used to secure the PI body in the neck R2 by means of the fastener F. At its lower end, the PI body forms a receiving tube P3, into which the dip tube TP is engaged. The PI body has a vent hole P4 that allows communication between the interior of the PI body and the interior of the reservoir R. The interior of the reservoir R thus communicates with the exterior via a venting path that extends through the distribution member P. The distribution member P also includes an actuating rod P5 that can be axially moved back and forth within the PI body. A piston P6 is mounted on the actuating rod P5 to slide tightly inside the PI body under the action of a return spring.This piston P6, together with the rod P5, forms an outlet valve for the fluid product coming from an internal chamber PO formed inside the body PL. An inlet valve P7 is also provided between the internal chamber PO and the dip tube TP. This inlet valve P7 can, for example, be in the form of a ball resting selectively on a seat formed by the body PL.

[0042] This is a completely conventional design for an atmospheric or air-recovery pump for pumping fluid product into the reservoir R and discharging it through the actuator rod P5. This pump also allows outside air to enter the reservoir R through the venting path which terminates at the vent hole P4.

[0043] The adapter A, which can be associated with or integrated into the fluid product source S, comprises a first connecting sleeve As for the source valve S2 and a second connecting sleeve Ap for the valve stem P5 of the dispensing member P. The connecting sleeve As communicates directly with the vent path of the dispensing member P via a filling conduit Ap. The second connecting sleeve Ap is connected to the outside via a vent conduit Aa. Thus, actuation of the source valve S2 allows fluid product to be injected into the reservoir R of the distributor D through the filling conduit Ap and the vent path of the dispensing member P. The injected fluid product enters the reservoir R through the vent hole P4. Simultaneously, the air contained in the reservoir R of the distributor D is evacuated through the dip tube TP, the inlet valve P7, and the open state, the internal chamber PO, the outlet valve in the open state, the actuating rod P5 and finally the vent conduit Aa of the adapter A.

[0044] Adapter A thus makes it possible to implement the particular filling process of the aforementioned document EP3310491.

[0045] Figure 3 also shows a distributor of the invention, which differs from that of Figures 1a, 1b, and 2 only in details. This distributor D also comprises a reservoir R with a bottom RI and a neck R2. The distribution head T includes a pump P mounted on and in the neck R2 by a fastener F. The pump P comprises a body PI with a tube holder P3 for a dip tube TP, the lower end of which Ti is provided with a stop valve V according to the invention. The body PI internally defines a chamber PO isolated from the dip tube TP by an inlet valve P7. An actuating rod P5 is axially movable back and forth within the body PI against a return spring. The actuating rod P5 supports a piston P6, which also acts as an outlet valve. The PI body forms laterally a vent hole P4 which communicates with the inside of the tank, more precisely at the level of its neck R2.The actuating rod P5 is capped by a pusher B which is equipped with a dispensing orifice B0, advantageously allowing the fluid product from the reservoir R to be dispensed as a spray of fine droplets. In [Fig. 3], the pump P is at rest. Its vent hole P4 is masked or blocked by the piston P6. However, it is easy to understand that the movement of the piston P6 will unmask the vent hole P4 in order to create a connection between the inside of the reservoir R and the outside of the dispenser through the pump P. This vent passage can, in particular, run around the actuating rod P5.

[0046] The distributor D of [Fig. 3] can be described as being of a completely conventional design for an atmospheric or air-recirculating distributor, allowing outside air to enter the reservoir R as fluid product is extracted from the reservoir by the pump P. When the reservoir R is full, as shown in [Fig. 3], the fluid level Nf is located near the neck R2, thus leaving a sufficient quantity of air inside the reservoir to absorb pressure and / or temperature variations. According to the invention, as mentioned above, the lower end Ti of the dip tube TP is provided with a shut-off valve V, which allows access to the dip tube TP to be selectively closed. This shut-off valve V is primarily operational when the distributor D is inverted, as shown in Figures 1b and 2, at the end of the filling process.

[0047] This stop valve V comprises a valve body V1 which can be made as a single unit. The valve body VI forms a receiving chamber V2 for the lower end Ti of the dip tube TP. This receiving chamber V2 communicates with a A connecting conduit V3 opens into a chamber V4. This chamber V4 forms a valve seat V5 for a moving element V6, which in this case is a floating ball, which can be solid or hollow. Its density simply needs to be lower than that of the fluid. This ball V6 can move within the chamber V4 so as to selectively make airtight contact with its valve seat V5. For molding purposes, the stop valve V also includes a plug V7 that allows the connecting conduit V3 to be molded.

[0048] It can be noted that the chamber V4 forming the seat of the valve V5 and the ball V6 are arranged adjacent to the plunger tube TP.

[0049] In [Fig. 4a], the distributor is inverted with the bottom RI of the reservoir R positioned at the top. The valve seat V5 is located above the ball V6. It can be seen that the fluid level Nf in the reservoir R is located approximately at the level of the floating ball V6, which can thus float inside its chamber V4. The shut-off valve V is then open and the air contained in the reservoir R can be discharged through the TP and the pump P.

[0050] By continuing to fill the reservoir R according to the process illustrated in Figures 1b and 2, the configuration shown in [Fig. 4b] is achieved. The fluid level Nf is then located above the valve seat V5 and the ball V6, which is then subjected to a floating motion against its seat V5. The stop valve V is in its closed state, preventing any communication of fluid or air with the dip tube TP.

[0051] In this way, the evacuation of air stored in the reservoir through the dip tube TP during the filling of the reservoir R is not prevented, but any spillage of fluid product through the dip tube TP is prevented at the end of the filling of the reservoir R. In short, the air is evacuated, but not the fluid product. A minimum quantity of air, designated Air.min in [Fig. 4b], then remains in the reservoir. From the moment the shut-off valve V is closed, fluid product can still be injected into the reservoir R, thus pressurizing the air in the reservoir until the pressures are equalized with that of the fluid product source S.

[0052] Once the reservoir R of the distributor D is filled, it can be put back in its right place and used in a conventional manner: the ball V6 of the stop valve V is forced by floating away from its seat V5. When the reservoir R is almost empty, the ball V6 falls back onto its seat V56: the stop valve V is then closed again.

[0053] Figures 5a and 5b show, in a highly enlarged form, a second embodiment of a stop valve V' of the invention. This second stop valve V' differs from the previous one in its axial symmetry with respect to the dip tube TP. The stop valve V' comprises a valve body VI' which is fitted onto the lower end Ti of the dip tube TP. This body VI' exhibits substantially rotational symmetry. It includes a connecting conduit V3' which directly connects the outlet of the The plunger tube TP is connected to the exterior of the body VI'. The body VI' forms a downward-facing annular or frustoconical valve seat V5' in Figures 5a and 5b. The stop valve V' also includes a cap V6' which is engaged around the body VI', while allowing axial movement over a limited stroke. This cap V6' acts as a movable valve element, similar to the ball V6 of the first embodiment. This cap V6' has a density lower than that of the fluid Pf. In other words, the cap V6' floats in the fluid Pf. The cap V6' forms an annular or frustoconical contact area V65 opposite the annular or frustoconical valve seat V5'. In this way, the contact area V65 can achieve a tight seal with the valve seat V5' by moving the cap V6' relative to the body VI'.

[0054] In [Fig. 5a], it can be seen that the fluid level Nf is located below the shut-off valve V'. Consequently, the cap V6' is surrounded by air and is subject to gravity. It therefore rests on the body VI', such that a gap is present between the seat V5' and the contact area V65. The air contained in the reservoir can then be vented through the open shut-off valve V' and the dip tube TP, as visualized by the arrowed line in [Fig. 5a]. The fluid product can be injected into the reservoir R through the venting path, as shown in Figures 1a and 2.

[0055] However, when the fluid level Nf reaches the level of the cap V6', the cap begins to float and thus moves to establish a tight seal between the valve seat V5' and the contact area V65. This is shown in [Fig. 5b]. The shut-off valve V' is then in its closed state. The fluid product Pf can no longer be discharged through the dip tube TP. The fluid level Nf stabilizes, and a minimum volume of air Air.min remains in the reservoir.

[0056] In this second embodiment, it can be noted that the valve seat V5' and the contact area V65 extend coaxially around the plunger tube Tp.

[0057] Figures 6a, 6b, 6c, and 7 illustrate a third embodiment of a stop valve V” according to the invention. This stop valve V” differs from the first two embodiments in that it incorporates a sound device V8, which can be described as a whistle. A sound or whistle is produced by a particular configuration that forces the airflow to follow a path that generates resonance. This is the same principle as all wind instruments. In addition to this particular sound indicator device V8, the stop valve V” also includes a ball V6 that floats in the fluid Pf so as to be pressed against its valve seat V5” when the fluid level Nf reaches the valve seat, as can be seen in [Fig. 6b]. The stop valve V” is then closed, and communication to the dip tube TP is cut off.

[0058] Thus, the V8 whistle emits a sound perceptible to the user throughout The filling operation is initiated by the fact that the air stored in the tank is expelled through the dip tube TP via the whistle V8. The sound generated by the whistle V8 thus provides the user with an audible indication that the filling process is underway. As soon as the sound generated by the whistle V8 stops, the user knows that the filling operation is complete. They can then disconnect the dispenser D from the fluid source S, as shown in [Fig. 1a].

[0059] In [Fig.6c], it can be seen that the stop valve V” comprises four constituent elements, namely a body Via”, an insert Vlb”, a floating ball V6 and a plug V7. The insert Vlb” is engaged inside the body Via” so as to form between them the cage in which the ball V6 moves, and the whistle V8.

[0060] Once the dispenser is filled, it can be returned to its upright position, as shown in [Fig. 7]. It can be operated by pressing its button B, so as to dispense more doses of fluid. Then, fluid from the reservoir is drawn into the pump P through the stop valve V'', which is forced open because the floating ball V6 is immersed in the fluid. The whistle V8 is deactivated since it is filled with fluid.

[0061] Referring to [Fig. 8], adapter A of Figures 1a, 1b, and 2 is seen equipped with an accessory or device A1, which also generates a sound perceptible to the user. To achieve this, device A1 is mounted at the outlet of the air duct Aa of adapter A. Thus, the airflow expelled through the dip tube TP passes through device A1. Just like the whistle V8, the user is alerted by the cessation of the sound that the filling operation is complete and that they can then remove the dispenser from adapter A.

[0062] The sound device Al can be an accessory of the adapter A, but it can also be integrated into the adapter A, for example in the form of a particular configuration of the air exhaust duct Aa allowing to generate a sound, such as a whistle or a click.

[0063] Although not shown, a detector can also be provided which detects the absence of airflow at the outlet of adapter A so that the detector can send a stop signal which stops the injection of fluid product.

[0064] The stop valve of the invention makes it possible to design a filling process comprising the following steps: a- Remove pusher B from actuating rod P5, b- Position the dispenser D upside down with the fluid product reservoir R located above the dispensing head T, c- Push in the actuating rod P5 to open the venting path and fluid communication between the actuating rod P5 and the dip tube TP, d- Inject fluid product through the venting path, leaving the air from reservoir R escapes through the dip tube TP and the actuating rod P5, until the fluid product injected into reservoir R forces the moving part V6, V6' into a tight contact against the seat V5, V5', V5”.

[0065] The V8 or Al device allows the user to know when the filling is finished.

[0066] Thanks to the stop valve of the invention, arranged at the end of the dip tube, one prevents any spillage of fluid through the dip tube. This avoids any loss of fluid at the outlet of adapter A, and also maintains a minimum air volume inside the tank.

Claims

Demands

1. Fluid product dispenser (D) comprising: - a fluid product reservoir (R) defining a bottom (RI) and an opening (R2), and - a dispensing head (T) mounted on and in the opening (R2) of the fluid product reservoir (R), the dispensing head (T) incorporating a dispensing element (P), such as a pump, defining a venting path through which outside air can enter the interior of the fluid product reservoir (R), the dispensing element (P) further comprising a dip tube (TP) extending into the reservoir (R), the dip tube (TP) comprising an inlet (Ti) near the bottom (RI) of the fluid product reservoir (R), characterized in that the inlet (Ti) of the dip tube (TP) is provided with a shut-off valve (V; V'; V”) comprising a movable element (V6; V6') and a seat (V5; V5'; V5”), the movable element (V6; V6') is stressed in sealed contact with the seat (V5; V5';V5”) by the fluid product when the distributor (D) is upside down with the fluid product reservoir (R) positioned above the distribution head (T), while the moving part (V6; V6') is forced away from the seat (V5; V5'; V5”) by the fluid product when the distributor (D) is right side up with the distribution head (T) positioned above the fluid product reservoir (R).;

2. Distributor according to claim 1, wherein the moving part (V6; V6') has a density lower than that of the fluid product, so that it floats in the fluid product.

3. Distributor according to claim 1 or 2, wherein the fluid product reservoir (R) with the dispensing head (T) mounted on it and in it defines a useful volume, the seat (V5; V5'; V5") being disposed in the fluid product reservoir (R) near the bottom (RI), so as to maintain in the fluid product reservoir (R), filled with fluid product through the venting path with the distributor (D) upside down, a quantity of air sufficient to absorb pressure and / or temperature variations.

4. Distributor according to any one of the preceding claims, wherein the stop valve (V; V'; V") comprises a valve body (VI; VI'; Via") forming the seat (V5; V5'; V5") and a connecting sleeve (V2) for the inlet (Ti) of the dip tube (TP), the component mobile (V6; V6') being captive of the valve body (VI; VI'; Via") with an axial degree of freedom allowing it to selectively come into tight contact with the seat (V5; V5'; V5").

5. Distributor according to any one of the preceding claims, wherein the moving part is a hollow ball (V6).

6. Distributor according to claim 5, in which the seat (V5; V5”) and the ball (V6) are arranged next to the plunger tube (TP).

7. Distributor according to any one of claims 1 to 4, wherein the moving member is a cap (V6') engaged around the valve body (VI'), the seat (V5') extending around the plunger tube (TP) and the cap (V6') defining an annular contact area (V65) intended to make a tight contact with the seat (V5'), this annular contact area (V65) extending around the plunger tube (TP).

8. Distributor according to any one of the preceding claims, wherein the stop valve (V'') is provided with a device (V8) delivering perceptible information, in particular a sound perceptible to a user, the perceptible information being generated in response to an airflow passing through the stop valve (V'").

9. Assembly comprising a fluid product source (S), an adapter (A) defining a filling duct (Ap) and a venting duct (Aa), and a distributor (D) according to any one of the preceding claims, the adapter (A) enabling the fluid product source (S) to be connected to the distributor (D) to achieve a crossover of fluid product and air flow, the adapter (A) being provided with a device (A1) delivering perceptible information, in particular a sound perceptible to a user, the perceptible information being generated in response to an airflow passing through the venting duct (Aa) of the adapter (A).

10. A method for filling a dispenser (D) according to any one of the preceding claims, the dispensing head (T) comprising a plunger (B) removably mounted on an actuating rod (P5) in fluid communication with the dip tube (TP) through a chamber (PO) and at least one valve (P7), the method comprising the following steps: a- Removing the plunger (B) from the actuating rod (P5), b- Positioning the dispenser (D) upside down with the fluid reservoir (R) located above the dispensing head (T), c- Pushing in the actuating rod (P5) to open the path ventilation and fluid communication between the actuating rod (P5) and the plunger tube (TP), d- Inject fluid product through the venting path, allowing air from the reservoir (R) to escape through the dip tube (TP) and the actuating rod (P5), until the fluid product injected into the reservoir (R) forces the moving part (V6; V6') into a tight contact against the seat (V5; V5'; V5"). * * *

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