| 摘要 |
<p>A liquid level control device adapted to be located in a vessel comprising a first flow controller (21) having a float (39) located in a chamber (53) which controls a valve (33), the chamber being open at the bottom to allow water ingress and egress and having an air vent (32) and a breather (52), and a second flow controller (22) having a float (69) which controls a valve (63) which is connected to the air vent (32). The first flow controller (21) controls water ingress to the vessel and the second flow controller (22) controls flow of air to the first chamber (53). Both flow controllers (21, 22) work together to maintain a constant level of liquid in the vessel. This liquid level control device is used for automatic watering of plants.</p> |
