| 摘要 |
<p>A dip tube (10) of variable length which can be connected to a valve or pump and be inserted through an opening in the top end of a container to accommodate full extraction of liquid contents from containers of varying height. The variable length of the dip tube is accomplished by making the dip tube in two sections, the shorter lower section (14) of a flexible plastics material and comprising a flexible bellows portion (16) that contracts and extends in length while over the lower end (20) of the longer section (12), in a freely moving but directionally guided manner, so that the flexible bellows cannot bend excessively. The bellows portion allows the length of the dip tube to vary so that its lower end (28) contacts the bottom of the container. It is adapted to be used in returnable circuit containers for dangerous goods, fitted with dry-break or dripless valves.</p> |
