Elmo Rietschle R-WVB

Three-lobe rotary blower for vacuum operation with low pulsation, robust construction and high efficiency.

Pumping speed: 22–8,580 m³/h
Ultimate vacuum: down to 0.5 bar(abs.)
Technology: Three-lobe rotary blower
Versions: bare unit, compact unit, acoustically insulated unit
Pumping speed: 22–8,580 m³/h
Ultimate vacuum: down to 0.5 bar(abs.)
Technology: Three-lobe rotary blower
Versions: bare unit, compact unit, acoustically insulated unit
Standard equipment 5 · Options and accessories 6
  • Contact-free operationThe oil-free compression chamber provides dry operation without medium contamination, while the bearings and gearbox are lubricated separately.
  • Two- or three-lobe rotor versionsThe robust design with two or three rotary lobes provides reliable operation, low pulsation and stable flow.
  • Air coolingEfficient air cooling simplifies integration without the need for additional cooling systems.
  • Different unit versionsAvailable as a bare unit, compact unit or compact unit with acoustic insulation for quieter operation.
  • Direct or belt driveThe drive can be selected according to the application for optimum adaptation of speed and performance.
Parameter2512030040043055075078010001300160020003300500065008300
Pumping speed [m³/h]20 – 6040 – 15080 – 400100 – 500150 – 500150 – 700300 – 900400 – 900500 – 1.200700 – 1.500900 – 2.0001.000 – 2.2001.500 – 4.0002.000 – 6.0003.000 – 8.0004.000 – 10.000
Differential pressure (Δp) [mbar]70 – 420200 – 500100 – 500100 – 500200 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500100 – 500

Benefits

Clean, contact-free operation

Three rotary lobes operate without contact, so there is no wear between the rotors in the compression chamber and no risk of medium contamination. The compression space is dry; only the gearbox and bearings are lubricated and separated from the working space.

Low pulsation and quieter operation

The three-lobe technology produces a more even flow with lower pulsation and noise, contributing to smoother system operation in demanding industrial applications.

High efficiency at optimum speed

The R-WVB series achieves high efficiency through optimally selected blower speeds, making it suitable for applications requiring reliable vacuum and economical operation.

Robust, service-friendly design

The construction is designed for long service life, stable operation and easy maintenance, making the series suitable for continuous industrial processes.

Flexible versions for different systems

R-WVB is available as a bare unit without a motor, a compact unit or a compact unit with an acoustically insulated enclosure. Frequency control is also available when closer process adaptation is required.

Wastewater-treatment plant with aeration system

Wastewater-treatment plants

Aeration and air transport

Reliable vacuum generation and airflow for aeration processes, gas conveying and auxiliary processes in wastewater-treatment plants.

Industrial pneumatic conveying of material

Pneumatic conveying

Material conveying

Efficient vacuum conveying of bulk materials such as dust, granules and pellets with reliable, constant flow.

Food packaging with vacuum technology

Food industry

Packaging and conveying

Vacuum applications for food packaging, conveying and processing where clean operation and reliability are essential.

Paper production in an industrial plant

Paper industry

Process vacuum

Vacuum for paper production, fiber conveying and drying where stable, continuous operation is required.

Chemical industrial processes

Chemical industry

Process gases

Conveying and processing gases and generating vacuum in chemical processes with demanding operating conditions.

Biogas plant and gas-treatment systems

Biogas plants

Biogas and gas conveying

Reliable conveying of biogas and other gases in energy systems, with high resistance to demanding operating conditions.

Vacuum and blowers

Tell us your requirements and we will propose the right solution.

Fill in a short form and we will prepare a proposal for a vacuum pump or blower based on flow, pressure, and operating conditions. If needed, we can also include filtration, silencers, and accessories.

Technology selection based on the process
Optimization of energy consumption, noise, and maintenance
Supply, installation, commissioning, and service
Contact form
* required fields
Your message is sent directly to our email inbox.
Where to find us
Directions
Pod lipami 4 · 1370 Logatec, Slovenija