Liquid Ring Vacuum Pumps

Elmo Rietschle’s L-Series liquid ring vacuum pumps and compressors are engineered for the most demanding industrial applications. Designed to operate reliably under wet, humid, or aggressive conditions, these pumps provide a combination of efficiency, durability, and low maintenance. Industries that face challenges with lime scale, corrosion, or abrasive media can rely on these pumps for consistent performance over many years.

Reliable Performance in Extreme Conditions

Industrial processes often involve humid or wet environments that can damage standard vacuum pumps. Lime scale, sediment, or abrasive particles frequently lead to reduced performance and increased maintenance costs. The L-Series liquid ring pumps overcome these challenges with robust design and high-quality materials. Stainless steel shafts and ceramic-coated pump housings provide exceptional corrosion resistance, preventing calcification and maintaining optimal operation over time.

Moreover, the monoblock design ensures compactness while reducing mechanical stress, providing reliable and predictable pump operation. The absence of metal-to-metal contact within the pump further reduces wear, while the increased water carryover capability makes the L-Series suitable for applications with high liquid content.

Advantages at a Glance

• Monoblock design for robustness and reliability
• Excellent resistance to corrosion
• No deposits or lime scale formation in the pump
• No metal-to-metal contact, reducing wear
• Increased water carryover capacity for demanding applications
• Low maintenance and operating costs

These features make the L-Series ideal for industries where continuous and reliable vacuum generation is critical.

Technical Features

• Volume flow: 20 to 600 m³/hr
• Ultimate vacuum: 33 mbar (abs)

These specifications allow the pumps to handle a wide range of processes, from small-scale laboratory applications to large industrial production lines.

Ceramic and Brick Industry

In the ceramic and brick industry, vacuum pumps are required for degassing clay and other materials. The L-Series maintains consistent vacuum levels, preventing defects and improving product quality.

Drying Systems

The L-Series excels in drying applications, including processes where moisture content must be carefully controlled. It ensures uniform drying while resisting corrosion from humid air or process fluids.

Environmental Engineering

Environmental applications demand robust and reliable vacuum solutions. Elmo Rietschle pumps are used for:

• Mobile processing of hydraulic oil
• Recovery of solvents
• Sanitation technology
• Vacuum tankers

These pumps operate safely in challenging environments and maintain efficiency over long operational periods.

Food and Beverage Industry

Vacuum pumps in the food and beverage industry must meet hygiene standards while handling liquids. L-Series pumps are employed for:

• Central vacuum systems in food processing plants
• Dairy industry applications such as milking and filling systems
• Food preservation and filtering systems
• Salt water desalination and sugar production
• Beverage degassing and tobacco humidification

The durable, corrosion-resistant materials ensure long service life even with frequent contact with liquids.

Lifting and Handling

In industrial lifting and handling applications, vacuum pumps assist in the transportation of materials, ensuring smooth and reliable operation of pick-and-place and holding systems.

Medical Industry

Medical processes require sterile, reliable vacuum generation. L-Series pumps are used in:

• Central vacuum systems in hospitals
• Steam sterilisation processes such as autoclaves

The pumps’ dry-running and wear-resistant design ensures hygiene and reliability in critical medical applications.

Packaging Industry

Reliable vacuum generation is essential in packaging processes. L-Series pumps support:

• Blister pack machines
• Filling and sealing machines
• PET bottle filling with beverages such as beer
• Rolling machines

These pumps maintain consistent vacuum levels, enhancing efficiency and throughput in high-speed production lines.

Plastics Industry

The plastics industry frequently uses vacuum in:

• Adhesion of plastic parts
• Calibrating and degassing rubber
• EPS foaming and extruder degassing
• Granulate conveying
• Removal and compression of vinyl chloride gas

With high tolerance to water and vapour, the L-Series ensures long-term reliability in these demanding operations.

Choosing the Elmo Rietschle L-Series guarantees a vacuum solution that is:

• Durable: Resistant to corrosion and abrasive conditions
• Economical: Reduced maintenance and energy costs
• Versatile: Suitable for a wide range of industrial applications
• Reliable: Consistent vacuum levels even under extreme conditions

The combination of stainless steel, ceramic coatings, and monoblock design ensures that these pumps continue to perform optimally over years of operation. In addition, worldwide service and support from PSI make it easy to integrate and maintain these pumps in any production environment.

Elmo Rietschle’s L-Series liquid ring vacuum pumps deliver a robust, efficient, and reliable solution for industries where wet and humid processes challenge conventional pumps. Whether for food processing, plastics, medical, or environmental applications, these pumps provide exceptional performance while minimising operating costs and downtime.

Pneumatics & Sensors Ireland are official distributors in Ireland for all Elmo Rietschle products and components. We have in-depth knowledge of all Elmo Rietschle products and their applications, and can advise on any installation or replacement. To learn more, contact us today.

Downloads

• L Series Catalogue