| 摘要 |
The system has a push button (2) comprising a body with an endpiece (15) arranged around an insert (16) to form a distribution chamber. The insert has an inner chamber (24) emerging in an orifice in a front end of the insert. The inner chamber is in communication with a piston chamber (26) formed between the body and a sleeve (5). The piston chamber has a volume variable according to position of the push button with respect to the sleeve so as to inject/suck air into/from the inner chamber and into/from a central part of a spraying zone over a distribution/suction course of the push button. |
