What is Brushless DC Pump?

Brushless DC Pump is a kind of dc water pump that use a bldc motor to drive the impeller on its rotor to pressurize fluid and transport liquids like water, air, oil, etc. For its high-efficiency, long life span and quiet advantages brushless dc water pump is widely used in various equipment as a liquid transport functional component.

As a low voltage mini water pump, Brushless DC pumps are widely for applications that requires use pump with small volume, low power consumption and low price. Such as used as automotive electric water pump for energy cooling , Aquarium, fish tank, cat water fountain, solar water fountain, water cooling system, water booster, water heater, water circulation system, car wash, agriculture, medical industries and home appliance etc.


Learn more about Brushless DC Pump

1. Advantages of Brushless Pump

Brushless dc pump has many advantages due to it is built by a brushless dc motor. As we all know, brushless motor is high in efficiency, long in life span, low in noise , easy in control. So, it has many advantages compares with brushed dc water pump or AC water Pump. Here, list some of them as below :

  • 1. Long life: Its life span is over 20,000 hours, ten times that of brushed Dc pump and AC pump. Generally speaking, its life span is as long as a same power brushless dc motor.
  • 2. High efficiency: Brushless DC water pump has no excitation loss and carbon brush loss, its efficiency can be more than 60%. Which is much higher than AC water pump’s efficiency.
  • 3. Waterproof: This type of dc pump with no water leakage problem, since its stator and circuit board are sealed with epoxy resin which completely isolated from the rotor.
  • 4. Low noise: BLDC pump use high-performance ceramic shaft which with high precision and good wear resistance. It’s minimum working noise can reach 25dB,even more lower.
  • 5. Stepless speed regulation: BLDC water pump can realize PWM speed regulation, analog signal input speed regulation, potentiometer manual speed regulation and other speed regulation way.

2. How to Choose a Brushless DC Pump?

There are many types of brushless DC water pumps in the market. However, not all pumps are suitable for your products or application. So, how to select a right pump for your application ? Take the below seven aspects into consideration before you finding the product:

  1. Power supply mode: There are DC power supply, battery, solar panel can supply power to the motor to drive the water pump. You need to consider choosing a three-phase dc water pump. Like a solar water powered pump directly powered by a solar panel without use DC to AC inverter is a three-phase dc pump.
  2. Parameters: Take the working voltage, current, max water head, max water flow and the size of the caliber into consideration. The max head of the pump generally refers to the static water head. That is, there is no water flow when pump the water is pump to the max head height. The max head of the pump should be higher than this height. If you require there is a certain water flow when need lift the water to a certain height.
  3. Performance: The performance of the pump should meet your application addition. Such as: Water flow and water head of your application working point; Pump can endure how high system pressure; Need submersible use or not; Pump can work in how high or how low ambient temperature and working fluid temperature; Working noise of the pump meet your requirements or not, if not you should use a quiet water pump etc.
  4. Appearance: Threaded interface or not, inlet and outlet direction, caliber size, etc.
  5. Working Medium: Brushless dc pump can pump water, oil, coolant. The impurities and magnetic particles in the water should be less than 0.35mm.
  6. Function: Functional requirements on the water pump Such as PWM speed control, FG signal,submersible or not, etc. And choose it according to you application conditions.
  7. Warranty and after-sales: You should choose a pump with warranty no less than a year. Audit the pump manufacturer, with good after-sales service, can supply the spare components in time or not.

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