1. Micro AC water pump:

The commutation of the AC water pump is changed by the frequency of the mains 50Hz. Its speed is very low. There are no electronic components in the AC water pump, which can withstand high temperatures. The volume and power of an AC pump with the same head are 5-10 times that of an AC pump. Advantages: Cheap price and more manufacturers

2. Brushed DC water pump:

When the water pump is working, the coil and commutator rotate, but the magnet and carbon brush do not rotate. When the electric motor rotates, the alternating direction of coil current is achieved by the commutator and brush. As long as the motor rotates, the carbon brushes will wear out. When the computer water pump reaches a certain level of operation, the wear gap of the carbon brush will increase, and the sound will also increase accordingly. After hundreds of hours of continuous operation, the carbon brush will not be able to play a reversing role. Advantages: Cheap.

3. Brushless DC water pump:

The electric motor brushless DC water pump consists of a brushless DC motor and an impeller. The shaft of the electric motor is connected to the impeller, and there is a gap between the stator and rotor of the water pump. After long-term use, water will seep into the motor, increasing the possibility of motor burnout.

Advantages: Brushless DC motors have been standardized and mass-produced by professional manufacturers, with relatively low costs and high efficiency.

4. DC brushless magnetic drive water pump:

The brushless DC water pump uses electronic components for commutation, does not use carbon brushes for commutation, and adopts high-performance wear-resistant ceramic shafts and ceramic bushings. The integrated injection molding of the shaft sleeve and magnet avoids wear, thus greatly improving the service life of the brushless DC magnetic water pump. The stator and rotor parts of the magnetic isolation water pump are completely isolated. The stator and circuit board parts are sealed with epoxy resin and 100 waterproof. The rotor part is made of permanent magnets, and the pump body is made of environmentally friendly materials. Friendly material, low noise, small size, and stable performance. The required parameters can be adjusted through the stator winding and can operate over a wide voltage range. Advantages: Long lifespan, low noise up to 35dB, suitable for hot water circulation. The stator and circuit board of the motor are sealed with epoxy resin and completely isolated from the rotor. They can be installed underwater and are completely waterproof. The water pump shaft adopts high-performance ceramic shaft, which has high accuracy and good seismic performance.