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Liquid Ring Vacuum Pumps and Liquid Ring Compressors

L-Series by Elmo Rietschle

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Liquid Ring Vacuum Pumps

Liquid Ring Compressors

Liquid Ring Vacuum Pumps and Compressors | L-Series 

The L-Series by Elmo Rietschle features a range of liquid ring vacuum pumps and compressors renowned for their robustness, reliability, and versatility. Liquid ring pumps are designed for demanding applications where a continuous, efficient vacuum or compression is required. 

The L-Series features various models with capacities ranging from small scale to heavy duty and cater to a diverse range of industrial needs across sectors such as chemical processing. With their durable construction and efficient performance, the liquid ring L-Series are trusted by industries worldwide for critical vacuum and compression requirements. 

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Liquid ring technology icon

Liquid Ring Features 

Liquid ring vacuum pumps offer numerous benefits including reliable performance, versatility, low-maintenance, energy-efficiency, and environmentally friendliness. 

 

  • Patented water reclamation system

  • Unique coatings

  • Stainless Steel options

  • Bronze alloy impellers

  • Anti-cavitation as standard

 

Liquid Ring Pumps by Elmo Rietschle

L-BL2 Also known as the Elmo Rietschle "Pump in a Box"

These self-contained portable units are oil free and dry air cooled. They include an L-BV liquid ring pump, industrial electric motor, discharge separator, heat exchanger and discharge condenser. To install, simply connect the suction line and motor and fill the water tank— it's ready to go!

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L-BL2 vacuum pumps

L-BV7 / L-BV2

Our L-BV7 and L-BV2 single stage liquid ring vacuum pumps are efficient machines which save space and consume up to 50 % less water. These pumps are available in various combinations of materials such as stainless steel, bronze, ceramic and cast iron with a ceramic coating. This enables them to be tailored to the respective operating requirements and thus provides long term resistance to corrosion.

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L-BV7 vacuum pumps/compressors

L-BV5 Monoblock pumps with the highest volume flow

The L-BV5 family is characterized by a very high suction volume of up to 353 cfm with suction pressures of up to 29 inHg and are primarily used for applications with large quantities of liquids (2BV54). The L-BV5 also simultaneously works as a condenser while suctioning condensable vapors. This enables the suction volume to be doubled. 

Reinforced stainless steel shafts, continuously lubricated bearings and a coated pump housing prevent wear and tear caused by solids that are also ingested, and guarantee constant performance and vacuum level, even after many years of use.

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L-BV5 vacuum pumps/compressors

Liquid Ring Pump Operation, Performance, and Specifications

Liquid ring pumps by Elmo Rietschle are optimized to generate both pressure and vacuum. During operation, the impeller spins, driving centrifugal forces to generate differentials in pressure. This product contains no oil, while also allowing small soft-solids to pass through the pump, unlike other types of vacuum technology and vacuum systems. While running, the water acts as the cooling agent, keeping your pump running efficiently and improving overall pump life.

 

Air Map L-Series – Liquid Ring

Liquid Ring Applications

With over 30 liquid ring pump models and configurations, Elmo Rietschle delivers precision-engineered options for a diverse range of industrial applications

How Does A Liquid Ring Vacuum Pump Work?

The impeller (1) is the only moving part. The impeller rotates without contact inside the pump casing (2). A rotating liquid ring (3) seals the impeller on the front and seals its blades against one another. Gas flows through the inlet slot (4) into the blade cells. The impeller is offset within the casing. This creates variable compression chambers between the blades (5), which compresses the gas within a full revolution. In order to stabilize the ring, liquid is also permanently sucked into the compression chamber and is expelled (6) together with the conveyed gas.

How it Works - Liquid Ring