End fitting for dispensing a foaming product

In an end fitting for dispensing a foaming product contained in a pressurized container fitted with an emergent stem carried by a valve cup having a crimped bead, the said end fitting comprising:

• (a) fixing means for holding the end fitting on the container;
• (b) dispensing means movable relative to said fixing means, said dispensing means defining firstly an internal bore arranged in slidably contacting relationship with said emergent stem of the valve to sealingly receive said stem and secondly a dispensing tube whose internal duct communicates with said bore, the top of said emergent stem of the valve occupying in the bore a first level, termed the lower one, when the dispensing means in not subjected to any force by the user and a second level, termed the upper one, when a user acts on the dispensing means to produce the dispensing,
• the improvement wherein the lower wall of the said bore has a portion defining at least one groove the top of which is disposed between said upper and lower levels and the bottom of which opens above the valve cup in a zone of the bore which is not closely by the emergent stem of the valve;
• said emergent stem having a longitudinal axis and said at least one groove extending generally parallel to said longitudinal axis and being movable with said dispensing means between a first position, corresponding to when a user acts on the dispensing means to produce the dispensing, and wherein flow through said at least one groove is blocked by said emergent stem and a second position, corresponding to release of said dispensing means, wherein flow through said at least one groove is permitted.