As one of the first domestic pioneers to enter the micro pump industry, TOPSFLO specializes in the development, design, production and sales of brushless DC centrifugal pumps, micro gear pumps, diaphragm air pumps and liquid pumps, etc. Founded in 2005,it has nearly 20 years of production experience. It has established industry technical barriers with continuous innovation. It is a micro pump manufacturer integrating scientific research, manufacturing, marketing and service,and also provides fast and professional product services.

Brushless DC centrifugal pumps→
Micro gear pumps→
Diaphragm gas pumps & liquid pumps→

TOPSFLO has extensive experience in many different applications. In order to make a better product recommendation, please tell us as much as possible about your application and how you intend to use the pump. Besides, flow, pressure, motor type and voltage, and liquid type must be considered when selecting a pump.

Long or restrictive tubing causes high pressure drags. This will reduce the pump flow and/or require more power.

We have our own independent structural engineers, electronic engineers, electrical engineers, and process engineers. If the customer’s project must require some non-standard samples or additional customization, after the customer tests our standard products to confirm that the basic parameter performance is ok, we can customize structure/electronics/motor different customization requirements of customers.

Yes, of course, and Topsflo engineers will assist you in better installation. As a potential partner of your future business, it is our pleasure and duty to support your business with our best efforts.

Self-priming pumps evacuate air from the pump, allowing fluid to rise up and enter the pump. Gear pumps and diaphragm pumps have self-priming functions, but centrifugal pumps do not.

Centrifugal pumps generate centrifugal force through the rotation of the impeller to drive the liquid to run. The liquid level needs to be higher than the height of the pump impeller, so there is no self-priming function. Customers should take it into consideration when designing, pay attention to installation conditions, and we can provide suggestions if necessary. If the design must be self-priming, gear pumps or diaphragm pumps can be considered.

Pump with two lead wires:
Two wires provide voltage to the pump, and the speed of the pump can be varied by increasing or decreasing the voltage supplied.

Pump with 3 lead wires:
3-wire products can be customized, the pump speed is controlled by 0-5V signal or PWM signal. This is accomplished through a control panel such as a computer or other control device connected to the pump via a third wire. The 0-5V or PWM signal controls the pump speed, not the supply voltage to the pump.

Our pumps can work with water, antifreeze, coolant, and food grade pumps can pump beverages, juices, milk, etc. In addition, we can also provide customized solutions if you have such kind of needs. Please contact your sales engineer to discuss your technical requirements.

Diaphragm pumps, piston pumps and peristaltic pumps can be run dry for any length of time. Centrifugal, rotary vane, and gear pumps should not be run dry. Exceptions are if the gear or impeller is made of a self-lubricating material such as RYTON in which case the pump can be run for a few minutes while priming.