| 摘要 |
<p>Prevents damage caused by standing fluid when stoppage occurs in the flow line, and thus eliminates scorching or freezing respectively. A floating seat is provided in the outflow line and closes or opens the supply by means of a magnet. As long as the fluid is in flow, the seat lifts and holds the supply open, but immediately flow ceases the seat lowers and the magnet closes switch contacts so that the spindle of a switching valve rises and opens a pipe leading back to the fore-container. Thus the fluid remains in flow and prevents stationary conditions in the heater or cooler. Specifically, the command passed to the contacts can be extended to the magnet coil which blocks cooling or heating medium entering through a valve.</p> |
