| 摘要 |
<p>Connection fitting has a switchable and controllable valve(1). For the forward as well as backward movements from the connections on the heating circuit it has a first connection (13) and second one (14) whose central axis (13a,14a) lie on the same plane (60). The throughflow of the heating medium through the heating unit(9) and back through this valve is regulated by an alternatively blocking and opening stopcock key (15). The lengthwise or cylinder axis (40) of the stopcock key runs parallel to the said plane.</p> |
