| 摘要 |
The present invention is a unit (1, Ia) for dispensing fluids (L) suited to be applied to a container, and comprises: a hollow body (2) defining a suction/compression chamber (3) for a fluid (L), provided with a suction duct (4) for the fluid (L), to which a piston (5) is slidingly coupled, wherein said piston (5) can be moved from a first lower position to a second upper position; valve means (19) suited to regulate the flow of the fluid (L) from the suction duct (4) into the suction/compression chamber (3) and to regulate its outflow towards a communication duct (Ha) in hydraulic communication with an outlet duct (1 ib) of the device; locking means (16) that can be activated by the user to lock the piston (5) in one of the lower and upper positions. Said valve means (19) comprise two elements (20, 21) slidingly coupled with each other so that when the piston (5) is locked in the first lower position the first element (20) creates a first tight area (20a) suited to prevent the passage of the fluid (L) from the suction duct (4). |
