DVBL Roots–Liquid Ring Systems

• •  High pumping speed at medium and high vacuum
• •  Strong tolerance of wet gas and condensable vapours
• •  Flexible 2-, 3- or 4-stage configuration
• •  Suitable for distillation, drying, evaporation and degassing

1. Why choose a Roots–liquid ring vacuum system?

It provides higher pumping speed and deeper vacuum than a single liquid ring pump. It is ideal for large gas loads, wet gases and condensable vapours.

2. What vacuum level can the system achieve?

A two-stage system can reach about 400 Pa, a three-stage system about 25 Pa, and a multi-stage configuration can reach below 1 Pa under suitable conditions.

3. Can it handle corrosive gases and condensable vapours?

Yes. The liquid ring backing pump handles wet and condensable gases effectively. Corrosion-resistant materials, coatings, condensers and filters are available for corrosive applications.

4. How is the correct system selected?

Selection depends on the working vacuum, pumping capacity, gas composition, vapour load and operating conditions. We can configure the appropriate pump stages, motor power and control system.