Ordinary pump work on the ground, while the submersible pump works in the water. It is because the submersible pump work environment, so the requirements of submersible pump is much higher than the ordinary pump. The most important point, submersible pump corrosive problems, used to deal with submersible pumps in a timely manner, you can use the third device to dry the submersible pump. There is a little different, submersible pump before running to fill the water, because only the submersible pump will produce centripetal force, centripetal force will promote the water.
