Push-button for a pressurized product dispensing system

A push-button for a pressurized product dispensing system, in which said push-button includes a body having a mounting shaft on a pressurized product supply tube and a housing in communication with said shaft, in which said housing is equipped with a passage for dispensing the product between said shaft and a swirl assembly including a swirl chamber provided with a dispensing aperture as well as at least one supply channel for said chamber, in which said push-button also includes a needle movably mounted in the housing between a position closing the supply of the dispensing aperture and a position opening said supply;

• said needle has an actuation bearing in communication with the dispensing passage so as to enable the movement of said needle in the opening position by pressurization of the product in said passage;
• said push-button is characterized in that the needle has a distal wall arranged opposite the dispensing aperture so as to form the base of the swirl chamber when said needle is in the opening position, and said distal wall has a recess, and wherein the needle is mounted in translation with respect to the dispensing aperture between the closure position in which the distal wall is pressed tightly against said aperture so as to close off the supply thereof and the opening position in which said distal wall is removed from said aperture to form the base of the swirl chamber.