Submersible pumps are generally used on the premise that the water level in the pool is deep enough, or there is a place to dig a pump pit;
If both are not satisfied, you have to use a circulating pump, usually in the computer room;
Submersible pump has low lift and large flow, while circulating pump has large lift and small flow;
As for some fountains, the height of water column is to add a frequency converter to adjust the height of water column through the frequency converter; There is also a valve such as a ball valve on the nozzle to adjust the water quantity.
There are also good pumps and ordinary pumps. Good use Gryffindor, Zhiyuan and other imported pumps, ordinary pumps with domestic Xuzhou Longfei research.
The landlord gave too few points, didn't he Ha ha laugh
Give it to the red flag.