| 摘要 |
Dispenser or vial pump, including a valve assembly (3) and a tube (4) that is fixed with one extremity to a nipple (6) of the valve assembly (3). The nipple (6) and tube (4) are in contact with each other with their respective contact surfaces (7, 8), at least one of the contact surfaces (7, 8) is provided with a roughness (9) in order to decrease the friction between the nipple (6) and the tube (4) during assembly. |
