摘要 |
<p>The valve device (1) has a connection element (10) which consists of a head, a connecting section which extends from one side of the head and is connected with a pump, and a chamber which penetrates the head in the longitudinal direction. A through hole is defined in the connecting section and communicates with the chamber. A coupling unit (20) is provided which has a main body with two ends. The ends are rotatably arranged in the chamber.</p> |