Water ring type Rotary Machines are principally used as vacuum pumps.

However they can also function as compressors in specific cases. They are simple and trouble free in operation. They are good at handling moist air as well as aggressive gases provided the material of construction is properly selected.

Gases containing dust can also be handled without problem.

Watering Vacuum Pumps /Compressors are absolutely free from oil and there is no risk of contamination to the medium passing through it. The ring fluid acts as seal and it also absorbs  the heat generated during compression. Depending on Gases to be handled, different fluids can be used for sealing instead of water.