| 摘要 |
A device (12) for the preparation of a beverage comprises a beverage supply duct (14) and a closure element (16). The closure element (16) comprises a closing surface (18) suitable for closing at least partially an end of the supply duct (14). The device (12) is characterized in that the closure element (16) is made of elastomer material suitable for undergoing an elastic deformation under the thrust of the beverage being supplied. The deformation causes an at least partial movement of the closing surface (18) away from the end of the supply duct (14). |
