A viewport is a window component mounted on the wall of a vacuum chamber through which various light and electromagnetic waves, such as ultraviolet, visible and infrared, can be transmitted. In vac...
Many vacuum process installations are equipped with a Roots pump on top of the pre-stage pump, both to increase the pumping speed and to improve the vacuum. However, the following problems are ofte...
Technical terminology for vacuum pumps
In addition to the main characteristics of the vacuum pump, ultimate pressure, flow rate and pumping rate, there are also some nomenclature terms to express t...
Many people may see gas ballast in the instructions of some oil sealed vacuum pumps. For example, there may be two types of vacuum degree for rotary vane vacuum pumps: one is the value of gas balla...