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Determine the pressure requirements for your pump. The pressure of a submersible pump is also known as head or lift. It is measured as the vertical distance from the pump to the highest point of discharge. For example, if you need a pump to drain a pond that's 8 feet deep, with water draining to ground level, you'll need a pump with 8 feet of head pressure or lift.
Pressure is the pressure of the outlet, such as the pressure of the water pump. Suction pressure is the inlet pressure of the inlet.
Pressure generally depends on the actual design of the site or the actual use of the pressure.
If the pressure is too small, due to the input of the feedback signal, the motor may overload operation, will burn the motor, and can not reach the requirements of the actual requirements of the pressure.
If the pressure is too large, higher than the design pressure will result in increased selection costs, and if the pipe will burst pipe corrosion.