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Liquid Ring

L-Series Liquid Ring Vacuum Pumps 

Diagram Liquid Ring Vacuum

 

Vacuum pumps L-BL2

Volume flow
27 to 1,200 m³/h
15.9 to 705.9 cfm

The L-BL2 range comprises compact plug-and-play systems for easy on-site installation. The pumps are air-cooled, 100 % oil-free and do not require additional water during operation. In addition, the vacuum pumps provide a much higher resistance to water and steam than alternative systems. Thanks to contact-free compression, they are virtually wear-free in operation and need no periodic maintenance. The patented discharge-air cooling system ensures that the pumps will not heat up by more than 15 K above room temperature. The pumps work reliably in continuous operation and are steam resistant and insensitive to condensation of the pumped air. 

Pump units 
Vacuum power units of the L-BL2 Split type are standardised liquid ring pump circulation systems with patented exhaust air cooling for large volume flows. A considerable amount of the water contained in the cool exhaust air condenses, remains in the system, and is thus available as operating water. As a result many applications no longer require additional operating water. Our low-maintenance vacuum pumps have been tried and tested for many years in numerous industrial applications. A comprehensive product range of accessories is available for this pump type.

Split
The L-BL2 split range family of pumps allow the user to take advantage of the L-BL technology in applications where higher air volume is needed or for special process requirements. They are suitable for applications involving aggressive suction materials and can also be implemented e.g. in the food & beverages industry where they are available in versions made entirely of stainless steel. We also sell versions equipped with all the valves including tubing required for integration into a CIP cleaning process. Air-to-water heat exchangers or plate heat exchangers are also on offer.


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L-BL2

 


Volume flow
10 to 11 m³/h
5.9 to 6.5 cfm

These liquid ring vacuum pumps are convincing – whether they are used for sterilizers or for medical/laboratory equipment, they excel where extremely small suction capacities are required within a minimum of space. With a suction volume of up to 11 m³/h, these little workhorses are particularly quiet and consume very little water. It goes without saying, of course, that the L-BV3 can also convey suction-side steam and liquids.

The L-BV3 features an unusually compact design: constructed in our tried-and-tested modular design, it has extremely space-saving dimensions. And also in respect to quality, the L-BV3 leaves no wishes unfulfilled: corrosion-resistant materials, reinforced bearings and a stainless steel shaft in the pump section all consistently ensure safe and efficient operation even under high loads.


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L-BV3

 


Volume flow
90 to 600 m³/h
52.9 to 352.9 cfm

The block pumps in the L-BV5 family are characterised by a very high suction volume of up to 600 m³/h with suction pressures of up to 33 mbar abs. and are primarily used for applications with large quantities of liquids. The L-BV5 also simultaneously works as a condenser while suctioning  condensable steam. This enables the suction volume to be doubled. The sound pressure level remains under 73 dB(A) and therefore fulfils even the strictest noise stipulations.

The single-stage compact construction of the L-BV5 reduces the space required for the installation of the pumps to around half that required by conventional modular machines. The pump can be easily installed in extruding machines and chemical systems, even when mounted to the underside of the tables. When developing these liquid ring pumps, Elmo Rietschle placed the focus on robustness and reliability. The L-BV5 can provide up to 20,000 hours of continuous operation without requiring an interruption for maintenance, even under the harshest conditions. Reinforced stainless steel shafts, continuously lubricated bearings and a coated pump housing prevent wear and tear caused by solids that are also sucked in, and guarantee constant performance, even after many years of use.


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L-BV5

 


Volume flow
27 to 145 m³/h
15.9 to 85.3 cfm

Our new L-BV7 liquid ring pumps are high-powered and multitalented machines which save space and up to 50 % in operating liquids. They can easily convey eight times the quantity of liquid. The monoblock construction of the L-BV7/L-BV2 far surpasses conventional modular pumps and is particularly suited for use in the plastics and medical industries.

The robustness and reliability is unparalleled in operation. The machines are available in various combinations of materials such as stainless steel, bronze, ceramic and cast iron with ceramic coating. This enables them to be tailored to the respective operating requirements and thus provides long-term resistance to erosion and corrosion. The entire L-BV range shines with quality: reinforced stainless steel shafts in the pump section and roller bearings with additional lubricant reservoir provide safe and maintenance-free operation even under heavy loads.


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L-BV7

 


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