vacuum histories
An history of vacuum technology began in northern Germany, during Summer 1657, with Guericke's experiment: 16 horses were unable to separate two evacuated copper hemispheres.

Some years before - 1643, Torricelli (1608-1647) had designed an experiment with mercury-filled-tubes: He was able to produce a vacuum and to demonstrate an instrument to measure air pressure.
Vacuum units conversion





FAQ,s and sizing tools
   conversion of pressure units    temperature units

   evacuation time    suction capacity    leakage rate

most commonly used vacuum pumps
in industrial and process vacuum applications:

Liquid Ring Vacuum Pumps
- Isothermal Compression, Oil-free
- capacity up to 30.000 m³/h
- pressure down to 30mbars
Steam Ejectors
- Constant Mass Flow, no moving part
- suction flange dia. from 1cm to 3m
- Pressure down to 0.1 mbar
Rotary Vane Vacuum Pumps
- capacity up to 1000 m³/h
- Pressures down to 1 mbar
Rotary Lobe (Roots Type) Vacuum Pumps
- used as boosters, oil free
- capacity up to 9000 m³/h
- pressures down to 0.1 mbar
Dry (screw or claw type) Vacuum Pumps
- capacity up to 1000 m³/h
- pressures down to 1 mbar
Condenser as a vacuum pump
- A precondenser is the most economical vacuum pump when a significant part of the load to be pumped is made of condensable vapours.

vacuum ranges
Today vacuum systems are divided into four areas based on the operating pressures being considered:
- Rough Vacuum 760 to 1 torr
- Medium Vacuum 1 to 10-3 torr
- High Vacuum 10-3 to 10-7 torr
- Ultra-high Vacuum 10-7 torr and below