10.3 meters.
But if the pump has a long tube immersed in the water, say as on a suction mining plant, then the 10.3m limit applies only to the part of the pipe above the surface.
(And in both answers ignoring altitude effects.)
The further any Pump has to lift or push water to get it to the surface the less pressure it will be able to make as an end result. More horsepower and Impellers are required as the depth to water increases.
That depends on the depth of the water in the well and the size of the pump.
This is a pump that lift a surface water to the nearby water treatment plant.
This is a pump that lift a surface water to the nearby water treatment plant.
Depth to lower water level
This varies from pump to pump because centrifugal pumps can be designed for various applications. The maximum height a pump can pump water depends on size of pipe/water column, friction, power available etc. This is often reffered to as the head of the pump. A water company would probably have some centrifugal pumps capable pumping to over 300m in a 30 inch main.
maximum current of a 1hp
Submarines change their depth by use of ballast tanks. To dive, they open their tanks so that they become filled with water. They also angle their dive planes. To surface, they pump the water out of their tanks and fill them with pressurised air.
they pump underground water to the surface
In artesian wells the water is forced to the surface by ground pressure. In conventional wells a pump is used to pump the water up.
An artesian well does not need a pump, as the water comes to the surface.
In general, aquatic plants produces oxygen when there is sunlight... better to have a bigger water surface to depth ratio to allow oxygen to desolve into the water, ie like a open pond.