Elmo Rietschle L series

The Elmo Rietschle L series comprises compact and robust liquid ring vacuum pumps for demanding processes, particularly wet ones. High-quality materials such as stainless steel and ceramic provide high corrosion resistance, reliable operation and constant performance even under difficult conditions.

The reinforced shafts and durable bearings allow low-maintenance and cost-efficient operation. A special ceramic inner coating reduces limescale deposits and contributes to a long service life and stable pump performance.

With 50/60 Hz motors, IP55 protection and international certifications, the L series is designed for worldwide use. Depending on the size, ATEX-certified versions are also available.

Standard operating conditions and performance

Ambient temperature: 0 to 40 °C, depending on model and version

Nominal pumping speed: approx. 20 to 250 m³/h, depending on model

Achievable ultimate vacuum: down to approx. 0.5 mbar (absolute), depending on model and version

Maximum permissible operating pressure: depending on model and operating mode

Designed for oil-lubricated vacuum applications

Operating principle

The Elmo Rietschle L series works according to the proven principle of oil-lubricated rotary vane vacuum technology. An eccentrically mounted rotor with movable vanes rotates inside the pump housing, creating continuously changing working chambers. The air drawn in is compressed in these working chambers and then expelled through the outlet.

The pump oil performs important functions for lubrication, sealing and heat dissipation. This allows reliable and efficient operation and, at the same time, high vacuum performance over a wide operating range.

The robust design and the proven rotary vane principle ensure reliable and durable operation with a manageable maintenance effort. Depending on model and version, the pumps can be adapted to different industrial process requirements.

The L series is suitable for numerous industrial applications that require reliable vacuum generation, high operational reliability and economical continuous operation.

More about the operating principles of liquid ring vacuum pumps

Features and benefits of the L series

The Elmo Rietschle L series uses the proven oil-lubricated rotary vane principle and provides reliable and constant vacuum generation for a wide variety of industrial applications.

The robust design and the efficient oil lubrication ensure a long service life and reliable continuous operation. The oil provides lubrication, sealing and heat dissipation at the same time.

The L series is available in various sizes and versions and can be flexibly adapted to different process requirements. It is particularly suitable for industrial vacuum systems, packaging, material handling, printing and general process applications.

With the L series, Elmo Rietschle offers a proven range of oil-lubricated rotary vane vacuum pumps developed for reliable operation, constant vacuum performance and a long service life. The proven rotary vane principle allows efficient vacuum generation and economical operation in numerous industrial applications. Thanks to its robust design and proven oil lubrication, the L series is a reliable solution for demanding vacuum processes.