förevakuumtyper
Förevakuumtyper is a Swedish term that translates to "forevacuum types" or "pre-vacuum types" in English. This term refers to the initial stage of a vacuum system's operation, specifically the vacuum level achieved before a higher vacuum is established. Forevacuum pumps are used to reduce the pressure in a chamber from atmospheric pressure down to a lower pressure, typically in the millibar or Pascal range. This preliminary vacuum is crucial for the efficient operation of subsequent high vacuum or ultra-high vacuum pumps, which are often unable to start or function effectively at atmospheric pressure.
There are several common types of forevacuum pumps, each with its own operating principle and applications.