UNIVERSAL DISPENSER TAP IN PLASTIC MATERIAL EQUIPPED WITH AUTOMATIC CLOSURE FOR CONNECTION SYSTEMS

Description

Description of the Industrial Invention having for title: “Universal dispenser tap in material plastic equipped with automatic closing for systems 5 connection” on behalf of: VITOP Moulding Srl, of nationality Italian, with headquarters in Via Enzo Ferrari 39 – 15121 ALEXANDRIA. Designated Inventor: NINI Diego 10 Filed under no. DESCRIPTION The present invention relates to a tap for dispensing liquids from containers, in in particular the so-called "Bag-" type containers 15 In-Box" (hereinafter referred to as BIB). In particular, the invention relates to a dispenser tap completely made of material plastic, adaptable to connection systems existing on the market, equipped with a closure 20 automatic by means of an elastic element, preferably domed, which will also have the purpose, in conjunction with a main body, of carry out the main seal of the tap and of minimize the amount of air entering the BIB 25 after filling, minimizing the oxidation of the -1- product contained inside the bag, as well as promote complete emptying of the BIB bag thanks to its domed geometry. In particular, the inventive tap can 5 be considered an application of the concept inventive method illustrated in patent WO-A1-2017081708 applied to this faucet technology as illustrated in FIG. 1 patented by the applicant. Many systems are used to deliver 10 liquids from a single-use BIB pack consisting of a flexible bag in a cardboard box. Generally, these systems comprise a bag equipped with an accessory, commonly called tap, through which the 15 filling and then dispensing the fluid contained inside the BIB package. A connector is generally provided between the spout and the pump service line or other type of mixing and dispensing system 20 drinks. Various configurations are known in the art of tap (e.g. EP-A1-3371095, US-B2- 10994912 or US-B2-7487951), which constitute forms of realization notes of this product. 25 In any case, there are also other -2- similar configurations of known type, illustrated on patent WO-A1-2016007818, relating to taps operated by connectors already present on the market. There are two types of connectors: 5 - Connector with hook system screwing, as illustrated in FIG. 8, 23, 24 and 25 (EP-A1-3081838); - Connector with hook system quick coupling, as illustrated in FIG. 11, 19, 20, 10 21 and 22 (US-A-4421146). All the known taps listed above have roughly a working principle / similar drive. Referring to Figures 22, 23, 24, 25 15 26, 27 and 28, they illustrate in detail the operating principle of the tap present on the market and the general principle of opening of the tap + connector system, to in order to allow the liquid to be dispensed 20 contained within a container, preferably BIB type. It should be considered that the tap also of the present invention will necessarily have to adapt to the connectors on the market, and 25 therefore he will have to respect the opening phases of each -3- type of connector, using a more advanced technology innovative and effective in terms of performance general compared to the obsolete technologies today present on the market which have numerous 5 limitations, including technical ones, as we will see in followed. Proceeding to analyze first the screw connector 7 of FIG. 26, yes will find the following activation phases of the 10 system: - phase 1: screw connector of FIG. 26, i.e. 7 screw connectors present on the market; - phase 2: screwing the connector 7 of FIG. 15 on a nozzle 12 of FIG. 26 and 27 on which are get the 12.7 bottom thread geometries and higher 12.6 (FIG. 27) necessary for allow the screwing of the connector 7 (FIG. 26), thanks to the operational coupling between the 20 thread 7.2 of FIG. 26 obtained on the connector and the 2 threads 12.7 12.6 of FIG. 27 obtained on the tap in FIG. 26 thanks to the coupling operational 7.2 - 12.6 / 12.7. In this phase it takes place also the opening of the connector 7 thanks to the 25 pin geometry push -4- central / bump 11.1 on the central pin 7.5 which runs inside the central turret 7A of FIG. 27 of the screw connector 7, which serves to open the delivery channel of connector 7 5 of FIG. 27. The central pin 7.5 of FIG. 27 can move back by a predetermined amount “X” of FIG. 27, then it will be blocked thanks to the cooperation with a geometric mechanical block inside the connector itself (not shown) present 10 inside the central turret 7A of FIG. 27. Simultaneously, connector 7 of FIG. 27 will go into operational seal with the tap thanks to the sealing geometries present on both systems (tap 10.3 of FIG. 27 and connector 7.4 of FIG. 15 27 with the sealing assembly 7.4-10.3) of FIG. 27 of competition and therefore tied to the body interior 10 thanks to the interference between the geometries 11.2 valve seal and internal body 10.2 generating a stable assembly 10.2-11.2. The 20 opening height of the central turret of the screw connector 7A of FIG. 27 will be controlled by a mechanical stop inside the central turret 7A (not shown), for a preset quota “X” of FIG. 27 thanks to the 25 cooperation from the present mechanical stop -5- inside the central pin of the 7.5 connector FIG. 27 (not illustrated); - phase 3: complete screwing of the connector 7 on the tap nozzle shown in FIG. 28 5 and simultaneous opening of the tap thanks to the thrust 11.1-7.5 which, having reached the altitude of mechanical stop of the connector, will move the valve internal 11 of FIG. 28 in the open position overcoming the interference generated between 10 the coupling of the sealing geometry of the internal valve 11.2 of FIG. 28 with the geometry internal body seal 10.2 of FIG. 28 and allowing the internal valve to move 11 in the open position and allowing, of 15 consequence, to the tap system + connector to screwing to remain both stuck in open position, thus allowing the dispensing of the liquid contained inside the BIB. The system's closing phases 20 will retrace the reverse phases just described. It should be noted that the closing of the valve 11 of FIG. 26 will be made thanks to the flexible teeth 10.1 of FIG. 26 obtained on the internal body 10. As we will see these little teeth 25 sometimes they will not have the elasticity and strength -6- necessary to allow the self-closing of the valve 11 and will cause leakage problems liquid. Regarding the connector version 5 quick-release 9 illustrated in FIG. 22, 23, 24 and 25, instead, can generally be described as working principle as follows: - phase 1: 9 screw connectors present on the market of FIG. 22; 10 - phase 2: fitting of connector 9 of FIG. 23 on the external disc geometries of the coupling nozzle 12.5 and 12.4 of FIG. 22 by means of the operational coupling the protuberances 9.1 and 9.2 obtained on the interlocking connector itself and 15 illustrated in FIG. 22 to allow for anchoring stable 9.1-12.4 and 9.2-12.5 simultaneous tap connector available on the market; - phase 3: manual push made by the customer final with a vertical force “FV” of FIG. 23 20 on the central turret 9A of the connector, which is will move in axis. The central turret 9A of the connector 9 of FIG. 23 will allow the same connector 9 to go into operational hold with the dispensing tap of FIG. 24 and, 25 simultaneously, thanks to operational contact -7- between the geometry of the central pin 11.1 of the internal valve 11 of FIG. 24 with the central pin 9.5 of the 9 interlocking connector will allow the opening of the connector. Even in this case the 5 opening quota of the central pin 9.5 of FIG. 24 will be limited to a “Y” quota thanks to the cooperation of mechanical geometries of stop internal of the central pin 9.5 of FIG. 24 (not illustrated) present within the “system” 10 movable turret 9A of FIG. 24. At this stage, the connector will have moved from one position to another closing to an opening and will be operational engaged with the internal geometries of the tap present on the market as illustrated in FIG. 24; 15 - phase 4: the 9A connector turret will continue its descent to finish the race possible “Z” movement of FIG. 23. The pin central 9.5 of FIG. 25 is blocked mechanically in its “Y” retraction stroke 20 of FIG. 25 and, thanks to the coupling with the central protuberance geometry of the faucet FIG. 25 (pairing 11.1-9.5) will win the locking interference between valve 11 and the body 10 (by means of the coupling to 25 interference of the 2 sealing geometries 10.2-11.2 -8- of FIG. 23 which work when the tap of FIG. 25 is in the closed position) and will move forward the internal valve 11 of FIG. 25 allowing opening the tap in FIG. 25. At this point 5 the tap system of FIG. 25 and connector to interlocking 9 of FIG. 25 will be operationally in opening position (both) as the movable central turret of the connector joint 9A of FIG. 24 will have finished making the 10 “Z” stroke opening the liquid passage. In at this stage, tap + connector will be both in dispensing position and will allow to the liquid to exit the BIB through the tap and the connector itself, which is usually 15 then connected to a dispensing machine. However, these taps have some defects. that the new inventive faucet will solve. The seals on these taps are not optimal and, after continuous connection for 20 hours / days of connectors (screw-on and / or quick hook-up), as normally happens, they lose completely their sealing properties, generating liquid leaks. The leaks are due to the fact that the geometries that should 25 promote the automatic closing of the tap -9- (geometries “10.1” illustrated in FIG. 22, 23, 24, 25, 26, 27 and 27), after some time that they remain deformed under the pressure of the valve “11” (shown in FIG. 22, 23, 24, 25, 26, 27 and 5 27) which in turn is pushed by connectors 7 or 9 of FIG. 25 and 28, lose their elastic capacity and they no longer have the "strength" to push the valve 11 in the closed position, as illustrated in FIG. 24 and 27, thus generating the loss of liquid 10 from the application once the connector is removed (7 or 9 of FIG. 22 and 26). The flow of such taps is often limited, as can be easily seen in FIG. 25 and in FIG. 28 where the known taps are illustrated in 15 opening position of the tap system + connector as most channels which should facilitate the passage of liquid are “obstructed” by the geometries necessary for the self-closing and the conformation of the channels 20 same. It can be immediately noticed that the geometries of sealing and self-closing of the tap will be to “obstruct” the passage of liquids, making significantly decrease the flow from the system. We will have to find a solution that allows us to 25 have a larger area for the liquid to pass through -10- tap 1 inventive. With the known solutions there is a need for use additional devices in order to promote complete evacuation / emptying of the 5 BIB container bag and, especially when you uses the screw connector which does not allows the body to move “forward” internal as illustrated in FIG. 28 as instead occurs due to the interlocking connector illustrated in 10 FIG. 25, and there is a risk that the bag will not completely empty. Priority of this new inventive tap will find a solution economical, preferably integrated into the tap inventive 1 of FIG. 1, which solves this problem. 15 There is a need to find a solution alternative to the known configurations present on the market that to allow operational connection of the screw connector 7 of FIG. 8. Nowadays, there are a number of known solutions 20 threads on the top and one on the bottom lower to facilitate screwing and the right positioning of the screw connector 7 on the inventive tap 1 as illustrated in FIG. 27 and FIG. 28. The creation of this thread 25 (upper 12.6 of FIG. 27 and lower 12.7 of -11- FIG. 27) is complicated to make mold (therefore much more expensive to make), is difficult to control at a qualitative level and It also forces competitors to use more 5 plastic materials to create these geometries. Furthermore, these geometries generate on the component in plastic, in its internal opposite wall 10.3 of FIG. 2, 23, 24, 25, 26, 27, 28 problems qualitative brought about by the deformations due to the 10 post dimensional shrinkage which normally has check on injected plastic components causing internal deformations to the printed piece very dangerous in terms of sealing (to liquids) general system. Normally these 15 post-shrinkage deformations are more evident in areas where many geometrically inserted geometries forming an area of ​​anomalous thickness inconstant as in the case of superior geometries 12.6 of FIG. 27 and lower 12.7 of FIG. 27. 20 The prerogative of this invention will be to find a alternative solution (cheaper to implement) I respect the known solution present today on the market) that allows me to obtain the same current performance while improving overall quality 25 of the plastic component on which they will be obtained. -12- The purpose of the present invention will be to allow the screwing of a connector to screwing 7 of FIG. 8 in a simpler way possible by exploiting 6.5 sectors, preferably 5 floors, which will protrude externally and will be obtained on Bocchello 6 which will be deform once screwed onto connector 7. To help the flexibility of the same will be present through-flow geometries 6.3 of FIG. 10 17 or non-passing 6B.3 which will favor this purpose. Chamfered geometry will also be present 6.14 which will ensure that they "donate" the sectors a right “structure” to ensure that the connector 7 of FIG. 8 is screwed in such a way 15 simple but safe. The purpose of the present invention is also that of optimising the internal areas obtained on the nozzle 6 of FIG. 17 so as to have only 2 internal geometries (today on the well-known taps they are 20 present multiple zones that make the production of the particular very complicated nozzle and (hardly achievable) i.e. an undercut internal circular 6.7 of FIG. 17 which will be used when the screw connector 7 will be used 25 FIG. 8 to hold assembly 1B in place -13- of FIG. 5 and a second circular geometry 6.6 on from which all the sealing geometries will be obtained and will allow the tap 1 inventive, when it will be in final position of use (FIG. 4 and FIG. 5) 5 to have an optimal liquid seal going in sealing coupling with the external wall 3.8 of the internal body 3 of FIG. 14. On the part top of the circular protruding geometry 6.6 in FIG. 17 there will be a preferably area 10 stop plate 6.8 of FIG. 17 which will be used when the faucet will be in pre-assembly position for by means of simultaneous cooperation between the internal geometries 3.9-6.8 and external geometries 2.4-6.1. Also plane geometry 6.8 will be useful 15 even when using the connector hook 9 of FIG. 11, when it will be operational connected, as illustrated in FIG. 12 and will act as internal valve descent stop 3 thanks to the cooperation of the 6.8 plane with geometry, 20 preferably flat, 3.3 of the internal body 3 as illustrated in FIG. 12. The purpose of the present invention is also create an innovative, simple and eco-friendly faucet compatible but still allows you to adapt to the 25 connectors and filling lines present -14- on the market today, without requiring modification and by changing the drive system, making it unique and universal for all connectors in trade, of both known types (grafting 5 quick and screw-on). The present invention, furthermore, shall solve prior art problems, providing an improved dispensing tap that be made with a minimum number of details, 10 is equipped with an internal sealing membrane, which is the main organ of the tap, and which allows to carry out both closing and closing operations automatic tap opening without using of metal springs or flexible spring geometries 15 integrated 10.1 like those made on the tap of FIG. 22, 23, 24, 25, 26, 27, 28 which then lose their “spring effect” as happens today with the taps on the market, both a greater oxygen tight, thanks also to the material 20 high-strength elastomeric material of which it is constituted, as well as to prevent / reduce the oxidation of the liquid inside, as the inventive tap, compared to those present on the market, significantly decreases the quantity of 25 air introduced into the BIB thanks to its special -15- geometries and the volume they occupy when they are the pre-assembly position. A further object of the present invention is to provide a tap as indicated above 5 which makes a valve seal in material elastomeric on the internal body, thus obtaining a significant increase in oxygen barrier. The improvement of the oxygen barrier is also achieved thanks to the fact that the 10 closure is done on the back of the internal body, eliminating losses due to the various parts exposed to the outside; furthermore, all organs of the system are, for this purpose, housed on the back of the tap in relation to the dispensing area. 15 The inventive tap, being equipped with a high oxygen barrier, it is suitable for aseptic applications, and therefore for treatments aseptic, which, at times, can be harmful and therefore inapplicable to some types of 20 known taps, since their dispenser must be subjected to sterilization cycles with hot steam, or gamma rays, or water distilled or other agents (even associated with them), which in some cases are aggressive, 25 compromising the functioning of the closure. -16- A further object of the present invention is that of having a rear dome system when fully assembled after filling of the bag, which keeps the film at a distance 5 bag from the tap preventing, in the final stage of dispensing the liquid when the bag is almost full empty and especially in the presence of systems forced suction from pumps connected to the connectors 7 and 9, that the film of the bag is 10 “attacks” on the tap, hindering the flow. Sometimes, to get around this problem, you adds a detail to the faucet (such as, for for example, those illustrated in US patents US-B2- 10095318, US-A-4601410, US-A-4138036, EP-A2- 15 0156627, US-A-5915596 and US-A-5647511), which however makes the application more complicated to manage and more expensive to make. A further object of the present invention is that of having the system that supports the pre- 20 external mounting on the tap and connected operationally exploiting a hooking geometry internal 2.1 on the hood 2 of FIG. 13 in coupling with an external sealing lip 6.1 obtained on the nozzle 6 of FIG. 17, generating 25 the stable, leak-proof and operational coupling of -17- Pre-assembly 6.1-2.1 illustrated in FIG. 3. The above and other purposes and benefits of the invention, as will result from the following of the description, are achieved with a 5 dispenser tap as described in the Claim 1. Preferred embodiments and non-trivial variants of the present invention form the object of the dependent claims. The present invention will be better described 10 from some preferred embodiments, provided by way of example and not limitation, with reference to the attached drawings, in which: - FIG. 1 is a perspective view of a construction of the tap according to this 15 invention; - FIG. 2 is a side view of a construction of the tap according to this invention; - FIG. 3 is a sectional view of the 20 faucet assembled in pre-assembly position of FIG. 1; - FIG. 4 is a sectional view of the faucet assembled in mounting position complete after the filling phase of FIG. 1; 25 - FIG. 5 is a sectional view of the -18- faucet assembled in mounting position complete with the protective tap removed FIG. 1; - FIG. 6 is an exploded sectional view of the 5 inventive tap of FIG. 1; - FIG. 7 is an exploded view of the tap inventive of FIG. 1; - FIG. 8 is a side view of a connector (screw-on) available on the market; 10 - FIG. 9 is a side view in section of the inventive tap of FIG. 1 connected operationally with connector 7; - FIG. 10 is a side view in section of the inventive tap of FIG. 1 connected 15 operationally with connector 7 and in detail the particular geometry that keeps the film of the bag (8 of FIG. 10) detached from the tap when the bag is almost empty avoiding the “emptiness” (and the resulting in interruption of liquid supply) 20 of the film about the inventive faucet of FIG. 1; - FIG. 11 is a sectional view of a connector (quick-fit) present on the market to which one must adapt; - FIG. 12 is a side view in section 25 of the inventive tap connected and in place -19- operational with connector 9; - FIG. 13 is a sectional view of the CAP component 2 of the inventive tap of FIG. 1; 5 - FIG. 14 represents views of a body main interior (or simply interior body) of the inventive tap in different positions and with various details; - FIG. 15 represents views of a stem (or 10 “stem”) of the inventive tap in different positions and with different details; - FIG. 16 represents views of a dome elastic seal or simply a dome elasticity of the inventive tap in different 15 positions and with different details; - FIG. 17 represents various views of a nozzle 6 of FIG. 1; - FIG. 18 represents the detail and the possible variant of the elements 20 flexible / deformable hooks to use with the screw connector 7 of FIG. 8; - FIG. 19 represents the section view of the removal phase of assembly 1A from the nozzle 6, and therefore the transition from the phase of 25 pre-assembly of the inventive faucet 1 to -20- filling position; - FIG. 20 represents the side view of the removal phase of assembly 1A from the nozzle 6, and therefore the transition from the phase of 5 pre-assembly of the inventive faucet 1 to filling position; - FIG. 21 represents a sectional view of the quick-release connector 9 and the tap 1 inventive hooked up but not yet operational 10 connected; - FIG. 22 represents a sectional view of the quick-release connector 9 and the tap marketed so far before the two components they mate operationally (phase 1); 15 - FIG. 23 represents a sectional view of the quick-release connector and the tap marketed today after the hooking of the same (phase 2); - FIG. 24 represents a sectional view 20 of the known quick-release connector 9 and of the inventive tap in its first phase of operational engagement when the center turret 9A pushed by the end customer with the vertical force of PV starts to move and connect with the faucet 25 inventive and with the central pin 9.5 of the connector -21- which begins to mate operationally with the well-known tap and thanks to the geometries of both determines the first opening of connector 9 (phase 3); 5 - FIG. 25 represents a sectional view of the known quick-release connector and of the inventive tap in its next phase of operational hookup, when the central pin moves the internal valve of the tap known thus bringing 10 the tap + connector system in its final operational dispensing position (phase 4); - FIG. 26 represents a sectional view of the screw-on connector and of the inventive tap before they connect 15 operationally one to the other (phase 1); - FIG. 27 represents a sectional view of the screw-on connector and of the inventive faucet in screw position almost complete (partially screwed) with the 20 internal valve 11 of the tap still known in closed position. - FIG. 28 represents a sectional view of the screw-on connector and of the tap in final liquid dispensing position 25 with the internal valve 11 of the known tap -22- moved to the open position. Referring to the Figures, it is described an exemplary and non-limiting embodiment limitation of the dispensing tap 1 of this 5 invention. It will be evident to an expert in the branch that the described tap can be made in shapes, sizes and with particulars equivalent, and can be used for containers of various types, for example those 10 so-called "Bag-in-Box" (BIB), but also those of rigid or semi-rigid type or others. The tap 1 of the invention serves for the dispensing of liquids from a container (not illustrated), and essentially includes: 15 - a cylindrical or elongated support nozzle main nozzle 6, equipped externally with connecting and coupling means 6.2, 6.4 and 6.5 (FIG. 17) with connectors 7 (FIG. 8 and 9) and of external fastening and sealing means 6.1 (FIG. 20 17) when tap 1 is in position pre-assembly (FIG. 3). Inside it is they also find sealing means 6.6 (FIG. 17) and upper ring dimension stop 6.7 and flat lower 6.8 (FIG. 17). Preferably, the 25 connecting means are made of rings of -23- seal 6.4 and 6.5 (FIG. 17) and from geometries protruding, preferably from the ring 6.5, 6.2 (FIG. 17), which can be preferably but not limited to plane or even plane geometries 5 with chamfered or curved connections, but extremely flexible, thanks to the exhaust geometry central 6.3. Alternatively, but not in a limited, a thinning of the section regarding the version 10 alternative 6B.3 (FIG. 18) made for divide the plane geometry in two and make it easier bending / deformation of geometries 6.2 and 6B.2 (FIG. 18) during the screwing phase of connector 7 (FIG. 8) and allowing the 15 plane geometries to deform and “follow” the 7.2 screw connector thread (FIG. 8), effectively creating a geometry helical guided by real thread present on the screw connector 7.2 (FIG. 20 9) facilitating its safe attachment as far as concerns connector 7 (FIG. 8). They will be have a chamfer geometry 6.14 of FIG. 17 useful for giving the right "structure" both to the 6.5 ring than to the sectors, preferably, 25 floors 6.2. Preferably, the nozzle of -24- support 6 inside it has areas of 6.7 upper locking and 6.6 sealing zones designed to cooperate with the geometry of the body interior 3 (FIG. 14), effectively dividing the area 5 internal of the nozzle 6 in 2 zones and avoiding so as to conform other attachment areas instead useful in the technology(s) known. Specifically and not limited to, the 6.7 geometry will go to cooperate with the geometry of the internal body 3.3 10 when the tap is in the position of final assembly, as illustrated in FIG. 4. In particular, the cooperation between the internal ring geometry of the nozzle 6.7 with the external ring geometry of the body 15 internal 3.3 will have its greatest effect when screw connector 7 will be used (FIG. 8). As illustrated in FIG. 9, when the screw connector will be connected completely with the inventive tap, 20 the coupling between the ring geometry internal nozzle 6.7 with the geometry to outer ring of the inner body 3.3 will keep in the right position the internal body 3 (and the its assembly 1B of FIG. 5), not allowing the 25 same a change of quota that would prejudice -25- the opening of both the screw connector 7 of FIG. 9, both of the inventive tap 1 of FIG. 9. The two ring geometries highlighted in FIG. 9 will have the right interference for 5 maintain the tap system 1 + connector to screwing 7 in the correct position for use as illustrated in FIG. 9. It should be remembered that during the opening phase (from the position of closing 1 of FIG. 5 to the opening position 10 of 1 and 7 of FIG. 9 and FIG. 10 of the connector screwing) will be generated on geometries 6.7-3.3 a minimal amount of force that will allow to interference 6.7-3.3 to maintain the body interior 3 (1B of FIG. 5) in the correct position 15 without problems as shown in FIG. 9 and 10. When will the connector be used instead? quick-locking inventive device 9 of FIG. 11, as illustrated in FIG. 12, the applied force “FV” on connector 9 of FIG. 11 and 12 will allow you to 20 “overcoming” mating interference 6.7- 3.3 (so the interference between geometry 6.7 with internal body geometry 3.3 )allowing, thanks to the manual push made from the human operator on the snap-on connector 25 9 of FIG. 11, to move the movable part -26- central connector 9A of FIG. 11 and, of consequence, to move and go in “operational sealing coupling” bringing assembly 1B of FIG. 5 in the open position 5 9 and 1 of FIG. 12, “winning” the given contrast from the two geometries 6.7-3.3 and allowing the correct use. Moving the valve internal 3 of FIG. 12 (1B of FIG. 5 on which all other stem components will be mounted 10 4 and a dome sealing element 5 of FIG. 12 to form an operational assembly) is also facilitated by the fact that the connector the interlocking will have a greater opening stroke “Z” compared to the screw connector as 15 illustrated in FIG. 12 and in FIG. 23. The moving the valve assembly 1B of FIG. 5 pushed by connector 9 of FIG. 11 will be “limited” not only by the “Z” quota of the connector as shown in FIG. 12 and FIG. 20 23 also from the coupling of geometry circular protrusion in its lower part, preferably flat, 3.3 of FIG. 14 with the plane geometry 6.8 of FIG. 17 obtained from above the sealing area 6.6 of FIG. 14 as 25 illustrated in FIG. 12 as 3.3-6.8. -27- - a cylindrical internal body 3 of FIG. 14 with internally of the rib geometries, one or more than one, 3.10 suitable to allow the conformation of a central coupling pin 5 elongated 3.6 of FIG. 14 on which it will be hooked the spring-loaded seal valve 5 of FIG. 16 thanks to mechanical cooperation 5.2 of FIG. 16, binding it permanently to the body component interior 3 of FIG. 14, allowing the element 10 of dome seal 5 of FIG. 16 to also make the hermetic seal thanks to the cooperation of the ring geometry, preferably edged alive, 5.4 of FIG. 16 with a plan, preferably but not limited to an inclined position, 15 3.5 of FIG. 14 as illustrated on the images of FIG. 3, FIG. 4 and FIG. 5, where the is highlighted tap in the closed position not yet “activated / opened” by one of the two connectors present on the market. Opposite to the geometry of 20 hook just described, you will find a pin central 3.7 (FIG. 14) which will be used to move from the closed position of FIG. 5 to open position, the connector to screw 7 (FIG. 9, FIG. 10) or interlocking 9 25 (FIG. 12), allowing the liquid to be dispensed -28- from the connectors on the market. Continuing in the description and moving on to the part upper internal, is located on the internal body 3 (FIG. 14) the hooking groove 3.1 which 5 will mechanically couple with the hood 2 (FIG. 13) thanks to the cooperation mechanics between the groove 3.1 (FIG. 14) with the hook 2.2 (FIG. 13), allowing the cap 5 same as “drag” assembly 1A 10 (FIG. 19), equipped with all components mounted on the internal body 3 (FIG. 14), outside from the tap assembly 1, when this is will find in pre-assembly position, as illustrated in FIG. 2 and FIG. 3, at the position 15 container filling, preferably but not limited to a BIB, as illustrated in FIG. 19, and also allowing to carry the tap in closed position at the end of the filling of the container itself, as 20 illustrated in FIG. 4. The internal wall 3.11 (FIG. 14) will allow you to have a wall of internal seal of the internal body 3 with the connectors on the market (thanks to hermetic interference with an O-ring 25 present on the central pin of the two connectors -29- (not illustrated) when they are in position use in FIG. 9 and 10, as regards the screw connector 7.6-3.11, and in FIG. 12 regarding the snap-in connector 5 9.6-3.11. Above the attachment zone 3.1 (FIG. 14) there are some hooking teeth 3.2 of FIG. 14 which will have the function, as on the known versions, to mate with the connector interlocking 9 (FIG. 11) specifically 9.4-3.2 10 of FIG. 12, to allow the closing of the internal valve (from open position to closed position) once the snap-on connector from the tap “drag”, thanks to the cooperation of the 15 teeth 3.2 with hollow geometry 9.4, the assembly mounted on the Internal body 3 of FIG. 12 (therefore dome valve 5 and stem 4) again in closed position, as illustrated in FIG. 5. Moving externally to the internal body 3 20 (FIG. 14), you can see a first geometry external ring 3.9 preferably edged I live in its extreme 3.3 of FIG. 14 useful to cooperate with the internal ring geometries of the nozzle 6 (FIG. 17) 6.7 upper when 25 assembly 1A of FIG. 19 is in position -30- final assembly, as illustrated in FIG. 4, or when it is in the use position as illustrated in FIG. 5. The tap assembly 1 illustrated in FIG. 5 will remain in position 5 correct helping the assembly mounted on the body interior 3 (FIG. 14) (consisting of internal body 3, stem 4 and elastic valve 5) to remain in the right position mainly when it will be used the screw connector 7 (FIG. 10 8) as illustrated in FIG. 9 and 10, with the cooperation of geometries 3.3-6.7 which will have the right operational interference to maintain the whole assembly in the right position as illustrated in FIG. 9 and 10. There will be a wall 15 vertical of the outer cylinder of the inner body 3 (FIG. 14) which will cooperate and provide sealing hermetic when in the open position (but also closing as illustrated in FIG. 4 and FIG. 5 always thanks to the cooperation of the 20 geometries 6.6-3.8) as illustrated in FIG. 9 and 10 regarding the connector to screwing (cooperation geometries 6.6-3.8) and will cooperate and make a hermetic seal when will be in the open position (but also in 25 closure as illustrated in FIG. 4 and FIG. 5 -31- always thanks to the cooperation of geometries 6.6-3.8) as illustrated in FIG. 12. On the part lower part of the internal body 3 (FIG. 14) is located a further protruding geometry that has two 5 functions. The first, when the assembly 1A (FIG. 19) mounted on the internal body 3 (FIG. 14) will be found in pre-assembly position as illustrated in FIG. 2 and FIG. 3, will keep the assembly mounted on the 10 internal body 3 of FIG. 14 in pre-position assembly thanks to the support of the geometry external 3.9 on the 6.8 plane but also, thanks to the cooperation of the external ring geometry of the 6.1 nozzle with the ring geometry 15 internal 2.1 of the hood 2 as illustrated in FIG. 3 where the coupling is clearly visible operational geometric 6.1-2.1. When instead will find in final capping position (so assembly 1A of FIG. 19 will be completely 20 inserted into the nozzle 6 of FIG. 17) as illustrated in FIG. 4 and FIG. 5, the internal body 3 thanks to the ring geometry with a rounding at the tip 3.4 of FIG. 14, a once the sealing area has been elastically bypassed 25 6.6 present on the nozzle 6 (FIG. 17) -32- (geometry 6.6), will mate operationally (6.6-3.4 of FIG. 4 and FIG. 5) and will prevent the internal body 3 (FIG. 14), on which other components will be mounted, it may be 5 removed. In practice, the cooperation of these two geometries 6.6-3.4 will favor the creation natural of an anti-extraction and tamper system evident to protect the contained product within and consequently of the consumer 10 final (the system does not allow removal of the internal body assembly and therefore does not allow to refill the container, avoiding product counterfeiting, as well as a dispersion of plastic material into the environment and 15 therefore which effectively satisfies the new European and international directives on articles of single-use plastic SUP, thus promoting its recovery and recycling). So tap 1 inventive will have to be designed to meet 20 requirements of the new European regulation called "Single-use plastic" (SUP), as well as, for example, the AB 319 regulation of the California in the United States. Both regulations aim to increase the 25 quantities of plastic collected and recycled, -33- thereby reducing marine litter. As a result, CPGs (consumer goods companies) packaged) have invited their partners to develop solutions that not only respect the 5 new regulations, but also provide the environmentally conscious consumers solutions that adapt to their lifestyle and provide them the best packaging experience. The 1 inventive tap fully satisfies these 10 requirements. - an internal stem 4 (FIG. 15) with one or more 4.4 structurally supported elongated elements from ribs 4.2 which will have the purpose of rest on the tip of the connector (for example 15 screw 7 (FIG. 8) and interlocking 9 (FIG. 11) which have the same internal pin area geometrically speaking and will allow the opening of the tap (and at the same time of the connector) during the connector insertion phase 20 same. There will be an invitation area 4.4 (FIG. 15) which will facilitate assembly and handling “in axis“ of the stem 4 (FIG. 15) when it will be operated from the push of the tip of the connectors during the opening phase, as shown in FIG. 9 and FIG. 10 25 (regarding the screw connector -34- 7) thanks to the push 7.4 of the connector 7 on the plane 4.1 of the stem 4 and in FIG. 12 (as far as concerns the snap-in connector 9) thanks to the thrust of the flat geometry of the tip of the 5 connector 9.7 of FIG. 11 with the obtained plane on stem 4 (4.1) of FIG. 15. Stem 4 will have also connection / hook geometries 4.3 (FIG. 15) with the elastic valve 5.1 (FIG. 16) by means of of the coupling 5.1-4.3 illustrated in FIG. 3, 10 4, 5, 9, 10, 12, 19. - an elastic dome element 5 (FIG. 16) which is the heart of the system, as it allows the hermetic self-closing of the tap thanks to the its geometry and the special material used 15 and also allows you to have it integrated into the tap a system that allows the complete emptying of the bag, avoiding that the film of the bag itself, end of life when the container (preferably BIB), attach to the back of the 20 tap and affect the supply as illustrated in FIG. 10. The dome shape also allows for a “soft” system that will not risk damaging the fragile BIB bag film. -35- The elastic dome 5 of FIG. 3 will generate a hermetic sealing of the 1A assembly thanks to the cooperation between the external ring geometry, preferably but not limited to, sharp edged 5 vivo 5.4 on the inclined plane geometry 3.5 of the inner body 3 as illustrated in FIG. 19. The elastic dome 5 will be constrained to the body internal 3 thanks to the central pin 3.6 which will go to mate operationally with the circular seat in 10 undercut obtained on the elastic dome 5 (5.2) through the hook generating a stable hook and safe 3.6-5.2 as illustrated in FIG. 9 (with screw connector 7) and in FIG. 12 (interlocking connector 9). 15 The elastic dome 5 will also be constrained operationally with stem 4 thanks to the coupling of the circular tooth 5.1 obtained inside the elastic dome with the circular hollow seat 4.3 obtained on the stem 4 20 as shown in FIG. 12 (connector to interlocking 9) and in FIG. 9 and 10 as regards the screw connector 7. - a protective cap 2 (FIG. 13). This component has a protective and covering task 25 of the internal elements of the faucet 1 inventive -36- during all stages of production up to final consumer, but also allows to provide a docking area for filling machines 2.3 (FIG. 13) which will allow you to remove the assembly 5 1A (FIG. 19 and FIG. 20) from the pre-position assembly to the filling position, where the nozzle 6 is free and ready to host the filling nozzle of the machine filling (not shown). There are at its 10 internal anchoring geometries preferably circular 2.2 (FIG. 13) to the internal body 3 with the 3.1 circular hollow geometries and anchoring external 2.1 on the external hollow geometry of the 6.1 nozzle, thanks to the 6.1-2.1 coupling of 15 FIG. 3. Preferably, this last coupling operating 6.1-2.1 will allow the faucet assembly inventive 1 of FIG. 3 to remain stably in pre-assembly position without having further hollow or protruding geometries inside the nozzle 20 support 6 (as occurs on the tap in FIG. 22, 23, 24, 25, 26, 27, 28 which he had to get three different internal areas on the nozzle for support the various operational positions of the inventive tap 1 or the pre-position 25 assembly of FIG. 3, the mounting position -37- complete after filling FIG. 4 the position dispensing with the screw connector 7 of FIG. 9 and 10 and finally the position of use with the interlocking connector 9 of FIG. 12). Finally, 5 has an internal wall 2.4 (FIG. 13) which will go in seal with the external ring geometry of the nozzle 6.1 and, thanks to this interference, provides a hermetic cooperation between the two components 6.1-2.4 as illustrated in FIG. 3 10 (pre-assembly position) and FIG. 4 (position of final assembly after filling). Preferred forms of have been described production of the components that will form once assembled the faucet 1 inventive, but 15 of course they may also be susceptible to further changes and variations and improvements in the time always falling within the scope of the same inventive idea. In particular, to the experts in the field will immediately appear 20 obvious numerous variations and modifications, functionally equivalent to the previous ones, which fall within the scope of protection of the invention as highlighted in the attached claims in which, any reference signs placed 25 in brackets cannot be interpreted in -38- sense of limiting the claims themselves. Furthermore, the word "including" does not exclude the presence of elements and / or phases other than those listed in the claims. The article “a”, 5 “one” or “an” preceding an element does not exclude the presence of a plurality of such elements. The simple fact that some features are cited in different dependent claims between they do not indicate that a combination of these 10 features cannot be advantageously used. The same obviously applies when talking about the complete faucet assembly 1 inventive. The operation phases will now be described. 15 (from closed position to open position) using the two connectors available on the market to demonstrate that the inventive tap 1 is fits existing connector systems without any problem, providing new, green technology and 20 more “safe” in terms of performance than the technologies currently on the market and available to consumers. Generally, the 1 inventive tap placed, preferably on a container of 25 type BIB, is supplied to the end customer in -39- pre-assembly position, as illustrated in FIG. 3. This position will then allow the customer final, to put the BIB on the machine filling, which will remove the assembly 5 1A as illustrated in FIG. 19 and will free, temporarily, until the filling is complete, the nozzle 6. Subsequently, at the end of the phase BIB filling, the filling machine will position stably and immovably 10 the assembly 1A of FIG. 19 by placing it inside of the nozzle in its final position capping, as illustrated in FIG. 4 and in this safety position, the container, will be able to be shipped to end customers. Arrived from 15 end customers the consumer will provide remove and dispose of the tap properly superior protection 2 and will be available the 1st inventive tap ready to “welcome” all connectors (screw-on or snap-on) 20 that are currently on the market for these applications. Now they will be described in detail, for each type of connector, the opening and closing phases disbursement. Referring to FIG. 9 and FIG. 25 10, you will be able to see the operational connection between the -40- screw connector 7 of FIG. 8 and the tap 1 of FIG. 5. The connector to screwing, to bind firmly to the tap 1 of FIG. 5, will exploit the opposite sectors 5 created on the outside of the nozzle 6, preferably but not limited to 6.13 plates 6B13 (FIG. 18) with possible invitation geometries to inclined plane 6.11 (FIG. 17 and FIG. 18) and with radius 6.12 / 6.12B (FIG. 17 and FIG. 18), or both at the 10 same moment. These sectors have been shaped so that they can be flexible and allow yourself to adapt, during the phase of screwing the connector to the helical profile of the thread present on the external connector 15 6.2 / 6.3-7.2. The two 6.2 geometries, preferably symmetrical but also asymmetrical, they have one 6.3 central exhaust which will favor the flexion and adapting to the 7.2 connector thread, allowing a precise and safe connection between 20 tap 1 inventive and screw connector 7 as illustrated in FIG. 18, also compensating for the possible dimensional differences between a connector and another “normal” when it comes to plastic components. The 6.3 central exhaust of 25 FIG. 18, favoring the deformation of the two sectors -41- protruding, preferably flat, will allow you to screw the screw connector 7 in such a way simpler and more precise by limiting the force of rotation and descent of the same and therefore favoring 5 a better user experience for the end consumer compared to outdated solutions present on the market today. Furthermore, the presence of a circular geometry with chamfer 6.14 and 6B.14 of FIG. 17 and FIG. 18 will facilitate the necessary 10 “structure” to the 2 flat sectors used for securely attach to the screw connector 7 of FIG. 8 compensating for the loss of structure given by the 6.3 and 6B.3 discharge geometry as illustrated in FIG. 17 and FIG. 18. This particular 15 compromise will allow to obtain geometries protruding 6.2 and 6B.3 flexible but tenacious capable to replicate the complex threads of the previous, old, solutions present in trading today. Once operationally connected 20 the screw connector 7 of FIG. 8 will be obtained, as illustrated in FIG. 9, the central pin 7.5 of the screw connector 7 which will rest on the central geometry of the internal body 3.7, favoring the opening of the feeding channel of the 25 connector 7.5 of FIG. 9. At the same time, the -42- front part 7.4 of FIG. 9 will rest on the geometries 4.1 of the stem 4 as illustrated in FIG. 9, moving it forward and helping the opening of the inventive tap 1. In fact, at stem 4 is 5 operationally connected the flexible dome elastic 5 thanks to the mechanical coupling 5.1- 4.3, as illustrated in FIG. 9. In turn the elastic dome 5 of FIG. 9 is stably constrained to the central pin of the internal body 3 10 (3.6-5.2 coupling) which, keeping it in position, promotes the development of strength closing “F” of FIG. 9 which serve to make automatically reseal hermetically the 1 inventive tap. The central pin of the 15 screw connector 7.6 will seal operating with the internal wall of the internal body 3.11, ensuring hermetic sealing of the coupling as illustrated in FIG. 9. The maintaining the position of the assembled assembly 20 on the Internal body 3 will be guaranteed by the geometries 3.3-6.7 while liquid tightness will be guaranteed from the operational coupling of the geometries protruding 6.6-3.8, as illustrated in FIG. 9. At disconnecting the screw connector 25 phases just described will repeat in reverse and -43- the inventive tap 1 will return to the position of closure, as illustrated in FIG. 5. From to underline that the tap 1 inventive, when the 7 screw connector is used 5 FIG. 8 does not move, as we will see will happen instead with push connector, 3 in inner body forward, changing his position during the delivery (as instead happens in the connector thrust as illustrated in FIG. 12): then there exists 10 a concrete risk that when the container is you will find it almost empty, the bag's thread will position itself abnormally on the tap 1 inventive plugging it and causing the leak to stop liquid, not allowing complete emptying 15 of the same (especially if the connector is attached to a suction pump system). This is a big problem with known taps, and to overcome this, a particular feature had to be added which keeps the film detached from the tap. 20 this case, as illustrated in FIG. 10, the film it is kept away thanks to the dome geometry of component 5 thus promoting the complete emptying the container. As for the second connector to 25 interlocking 9 of FIG. 11, the procedure is similar but -44- the internal movement of the inventive tap is different. Referring to FIG. 11, one can see the snap-on connector on the 5 market in opening position not yet connected to no tap, while in FIG. 21 it is you can see the built-in faucet installed on the tap 1 inventive thanks to cooperation mechanics of protruding anchor geometries 10 9.1 and 9.2 of the snap-fit ​​connector 9 of FIG. 11 with geometries, preferably circular protruding nozzles 6.14 and 6.4 of FIG. 17. The stable and secure operational connection 9.1-6.4 and 9.2-6.14 can be seen on FIG. 21. The operator 15 final / customer, to activate the connector to interlocking, and consequently the dispensing tap 1 inventive, will have to apply a manual force “FV” represented in FIG. 12. The force “FV” will allow to overcome the force of maintaining a given position 20 from the 3.3-6.7 coupling which allows for keep the valve in place when use the screw connector as illustrated above and how it is possible see FIG. 9 and FIG. 10, and 25 allows the central pin of connector 9 of FIG. -45- 11 to enter the internal valve 3 and carry out operational stability thanks to the 3.11 coupling- 9.6 as illustrated in FIG. 12 and to lean on, at the same time, on the 9.3 tip geometry 5 on the 4.1 stem and also on the 9.3 tip geometry and on the internal rib geometries 3.10 of FIG. 14 of the internal valve allowing the movement forward of the internal valve 3 and simultaneously with the opening of the tap 1 10 inventive, since the push of the pin tip of connector 9 (9.3 of FIG. 12) will move the stem 4 thanks to the mechanical coupling 4.3-5.1 and 3.6- 5.2 of FIG. 12 and will allow the opening and the subsequent exit of liquid from the tap 1 15 inventive. At the same time, the connector also 9 of FIG. 12 will open its passage channel liquid thanks to the coupling between the geometry central 3.7 of the internal body 3 and the tip of the 9.5 connector internal sealing stem, as 20 illustrated in FIG. 12 (3.7-9.5). During this phase just described and simultaneously with all the stages described, the flexible teeth of the internal valve 3.2 will bend, during the phase of “descent” of the internal body 3 of FIG. 12 guided 25 to the "correct folding" thanks to cooperation -46- with the internal diameter of the nozzle 6.10 of FIG. 12 as illustrated, and they will mate stably to the hollow geometry present on the central pin of the connector 9.4. Specifically, this 5 mechanical coupling 9.4-3.2 of FIG. 12 will allow the internal valve 3 to return to closed position as illustrated in FIG. 21, as the mechanical coupling will ensure the valve the internal 3 to be dragged back 10 in the closed position, as illustrated in FIG. 21. The flexible teeth, once they come out of the sealing diameter 6.10 of the nozzle 6 of FIG. 17, will be able to bend in the opposite way and unhook from the central pin of the connector 15 interlocking 9, as illustrated in FIG. 21. You will also be able to notice the coupling for interference that generates the main seal and the tightness of the tap 6.6-3.8 of FIG. 12 and the coupling that stops the valve from descending 20 internal 3 in the correct opening position 3.3- 6.8 of FIG. 12. As previously announced, the phase of re-closure follows an “opposite path” supported, as mentioned before, by cooperation mechanics 9.4-3.2 between the teeth of the internal body 3 and 25 the seat of the central pin of connector 9 which -47- will return tap 1 to the closed position inventive, as illustrated in FIG. 21. -48-

Claims

1. Universal dispensing tap (1) made of plastic material equipped with automatic closure for connection systems, said dispensing tap (1) comprising: - an elongated cylindrical support nozzle or main nozzle (6); - an internal body (3) equipped internally with rib geometries; - an internal stem (4) equipped with one or more elongated elements (4.4); - an elastic dome element (5) designed to generate a hermetic seal of the tap (1) thanks to the cooperation between an external ring geometry (5.4) on an inclined plane geometry (3.5) of the internal body (3); and - a protective cap (2) having the task of protecting and covering the internal elements of the tap (1); characterised in that said elongated cylindrical support nozzle or main nozzle (6) is equipped: * on its outside, with connection and coupling means (6.2, 6.4, 6.5) and with coupling and -1 external sealing means (6.1) when the tap (1) is in a pre-assembly position; * inside it, sealing means (6.6) and upper ring (6.7) and lower flat (6.8) stop with corresponding internal body geometries (3), so as to divide the inside of the nozzle (6) into two zones.

2. Dispensing tap (1) according to claim 1, characterised in that the connecting means are made up of sealing rings (6.4, 6.5) and geometries (6.5, 6.2) protruding from the ring and flexible, thanks to a central discharge geometry (6.3) designed to divide the flat geometry in two and facilitate the bending / deformation of the geometries (6.2) designed, during a screwing phase of a connector (7) on the dispensing tap (1), to deform and follow a thread of the connector (7).

3. Dispensing tap (1) according to claim 1, characterised in that the connecting means are made up of sealing rings (6.4, 6.5) and geometries (6.5, 6B.2) protruding from the ring and flexible thanks to a thinning of the section (6B.3) designed to divide the flat geometry in two and facilitate the bending / deformation of the geometries (6B.2) designed, during a screwing phase of a connector (7) on the dispensing tap (1), to deform and follow a thread of the connector (7).

4. Dispensing tap (1) according to claim 1, 2 or 3, characterised in that it is also equipped with a bevelled geometry (6.14) designed to provide structure both to the ring (6.5) and to the sectors (6.2).

5. Dispensing tap (1) according to any of the preceding claims, characterised in that the geometry (6.7) is designed to cooperate with a corresponding geometry (3.3) of the internal body (3) when the tap is in the final assembly position, during an opening phase of a screw connector (7) a minimum amount of force is generated on the geometries (6.7-3.3) which allows the interference between the geometries (6.7-3.3) to keep the internal body (3) in a correct position, while, in case of using a quick-fit connector (9), an applied force (FV) on the connector (9) allows the coupling interference of the geometries (6.7-3.3) to be overcome, allowing, thanks to a manual push on the snap-fit ​​connector (9), the central movable part (9A) of the connector (9) to be moved and, consequently, to move and enter into operational sealing coupling.

6. Dispensing tap (1) according to any of the preceding claims, characterised in that said internal body (3) is cylindrical and in which the rib geometries (3.10) are suitable to allow the conformation of an elongated central coupling pin (3.6) on which the elastic dome sealing element (5) will be hooked thanks to a mechanical cooperation (5.2), allowing the dome sealing element (5) to also perform the hermetic seal thanks to the cooperation of the ring geometry (5.4) with a plane (3.5).

7. Dispensing tap (1) according to any of the preceding claims, characterised in that said internal body (3) comprises a coupling groove (3.1) designed to mechanically couple with the cap (2) thanks to a mechanical cooperation between the groove (3.1) with a coupling (2.2), the internal wall (3.11) allowing to have an internal sealing wall of the internal body (3) with a connector (7, 9) thanks to a hermetic interference (7.6-3.11, 9.6-3.11) with an O-ring present on a central pin of the connectors (7, 9).

8. Dispensing tap (1) according to any of the preceding claims, characterised in that said internal body (3) is equipped, above the coupling area (3.1), with coupling teeth (3.2) designed to mate (in 9.43.2) with the snap-fit ​​connector (9), the internal body (3) being further equipped externally with a first external ring geometry (3.9) at its end (3.3), designed to cooperate with the internal ring geometries (6.7) of the nozzle (6).

9. Dispensing tap (1) according to any of the preceding claims, characterised in that said internal body (3) is further equipped with a vertical wall of its external cylinder, designed to cooperate and form a hermetic seal with a screw connector (7), while, on the lower part of the internal body (3) there is a further protruding geometry having two functions, the first function being to maintain an assembly mounted on the internal body (3) in the pre-assembly position -5 thanks to the support of the external geometry (3.9) on the plane (6.8) but also, thanks to the cooperation of the external ring geometry of the nozzle (6.1) with the internal ring geometry (2.1) of the cap (2), when instead it is in the final capping position, the internal body (3), thanks to the ring geometry with a rounded tip (3.4), once it has elastically bypassed the sealing area (6.6) present on the nozzle (6) coupling operationally with the nozzle (6) itself.

10. Dispensing tap (1) according to any of the preceding claims, characterised in that said internal stem (4) is equipped with connection / coupling geometries (4.3) with the elastic valve (5.1).

11. Dispensing tap (1) according to any of the preceding claims, characterised in that said elastic dome element (5) is constrained to the internal body (3) thanks to the central pin (3.6) designed to couple operationally with an undercut circular seat (5.2) obtained on the elastic dome (5), said elastic dome element (5) being also constrained operationally with the stem (4) -6 thanks to the coupling of a circular tooth (5.1) obtained inside the elastic dome with the circular hollowed seat (4.3) obtained on the stem (4). 5 12. Dispensing tap (1) according to any of the preceding claims, characterised in that said protective cap (2) is equipped inside with anchoring geometries, preferably circular, (2.2) to the internal body 10 (3) with the circular hollow geometries (3.1) and external anchoring (2.1) on the external hollow geometry (6.1) of the nozzle (6).