| 摘要 |
Water tank 14 and expansion vessel 18 device for a heat exchanger which can be passed through by a heat-exchange liquid. In order to make it possible to monitor the level 24 of the liquid in the expansion vessel 18, the wall 26 of the latter is formed from a translucent plastic material which has a region of locally decreased thickness, onto which is attached an insert 40 formed of a transparent plastic material. <IMAGE>
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