| 摘要 |
<p>The insert (10) has a piston (24) displaceable in a cylindrical hollow body. The body is provided with openings (21-23). The piston forms two closure elements (26, 28) i.e. plungers, for closing the two respective openings (21, 22). One of the elements (26) exhibits a larger closing path than that of the other element (28). A total cross section of one of the openings (22) is designed large such that a heating medium between 15 and 20 percentage arrived from a heating-feed line flows through one of the openings (22) when one of the openings (22) is completely opened. An independent claim is also included for a connecting device.</p> |
