What is the difference between a positive pressure pump and a negative pressure pump?

There are many types of micro-pump, such as miniature vacuum pump, miniature pump, micro gas sampling pump, micro gas circulation pump, miniature suction pump, micro suction pump, mini pump, miniature pump, miniature high pressure air pump Etc., some of these pumps are positive pressure pump, some negative pressure pump, then you know the difference between them? Negative pressure pump Positive pressure pump and negative pressure pump is very different. For example, their gas flow is different, the negative pressure pump is the external gas is sucked into the suction nozzle; and positive pressure is discharged from the exhaust nozzle; another example, the level of pressure is different and so on. In fact, "negative pressure pump", "positive pressure pump" is mainly from the function and the main purpose of people to distinguish. "Negative pressure pump" is mainly used in the vacuum requirements of the occasion, such as: pumping, gas analysis, gas circulation, gas sampling, vacuum adsorption, indirect water absorption. "Positive pressure pump" is mainly used for pumps that need to be used as power, gas transfer, pressurization of airtight containers, inflatable cheer, indirect pressure water. Although there is a big difference between the two, they are equally important in medical, research, environmental protection, instrumentation and control aspects. Further Reading: Pumps Valves pipe fittings Exhibition 2016 Exhibition of Information Industry, Internet (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / micro-channel :) (service hotline:)