Select a professional reference for vacuum pumps

A vacuum pump is a device that extracts air or gas from a gas storage tank to produce partial or complete vacuum in related equipment. The pressure in the enclosed space is gradually reduced, allowing air to be inhaled. The inhaled gaseous molecules are then released into the surrounding air or into another gas tank.

Vacuum pumps are widely used in many fields, such as laboratories, the medical industry, food packaging, and the chemical industry.

How to choose a vacuum pump?

When choosing a vacuum pump, you need to consider a number of factors. First of all, your choice should match your intended use, which can help you determine the technology, lubrication, chemical resistance, vacuum degree and necessary flow rate.

The key factors in choosing a vacuum pump are quality and the level of vacuum required. There are several types of vacuum: industrial or low vacuum, high vacuum, and ultra-high vacuum. The difference between the three is the scarcity of the number of molecules obtained, which is measured by the pressure of the residual gas. The lower the pressure, the fewer molecules per cubic centimeter. Therefore, the vacuum quality is higher.

Also consider the following characteristics:

Pump flow rate: Flow rate is related to the emptying time of the machine. Therefore, it is necessary to evaluate the vacuum pump’s ability to generate the required pump speed (volume flow) and mass flow according to the process requirements. Generally, the greater the flow, the shorter the drainage time. The table above shows the number of molecules remaining per cubic centimeter, depending on the type of vacuum chosen.
Chemical compatibility: By analyzing all the problems the equipment may encounter, it is necessary to consider the compatibility of the gas you use with the selected vacuum pump.
Lubrication: Determine whether the vacuum pump needs to be lubricated. Lubricated vacuum pumps are more efficient and more durable. However, it requires frequent regular maintenance. In a laboratory environment, it is best to use a dry vacuum pump.
Maintenance and cost: According to the above criteria, the frequency of maintenance cycles needs to be analyzed. These factors will determine the total cost of the installation, taking into account the purchase price as well as the cost of operation and maintenance.