Stainless steel fountain pump Why not water?

First of all, why should the air, the principle of pump suction is the rotation of the impeller to pump water inside the thrown out and then let the inlet pipe into a vacuum. And then under the action of atmospheric pressure, the water pressure into the pump. So if not filled, then the pump is not sealed to the air inside the pump emptying into a high degree of vacuum. In other words, not water, it can not smoke Sheung Shui. You will hear the pump inside the air-ring (at the end of the suction under vacuum when the bubble generated by the sound of cracking).

the reason:

1, because there is no water.
2, because the vertical height of your pump and water is higher than the pump suction itself.
3, pipeline resistance is too large (including the diameter is too small, elbow, etc.).

Manufacturers recommend: Shenlong stainless steel fountain pump

Keywords:Stainless steel fountain pump, not water, exhaust air