| 摘要 |
The present invention refers to an electric current hydropneumatic switch for water pumps with a vacuum indicator and a start-up button, which is a device for protecting the water pumps and the electric installation from an overheat, besides being a vacuum indicator in the water pump and the pipe, the invention being useful as a water shortage sensor or malfunction in the automatic of the tank. The purpose of the invention is to provide a novel device which supplies opportune information of water discharge in the pump and pipe, which is effective and safe, and easily installed in any water pumping system, thus providing the user with safety and versatility upon being installed in a vertical or horizontal manner above the water pump. |
