Claw Vacuum Pump

The C-Series dry claw vacuum pumps and claw air compressors of Elmo Rietschle generate contact-free vacuum or compressed air efficiently and economically. This is possible because of the principle of internal compression in the rotary claw design. The gas is pre-compressed within the compressing chamber and is then discharged.

The Elmo Rietschle dry claw pumps offer significant energy saving and high efficiency compared to the traditional rotary lobe blower designs without internal compression.

Our innovative claw technology

The claws of the C-Series feature an optimized, high precision shape and roll together without contact, synchronised by a precision gear set. The compression is achieved dry and wear free. Special seals separate the compression chamber and gearbox. The claw rotors control the transportation of the medium by opening and closing the inlet and outlet channels. Thus no sealing fluid within the compression chamber is needed.

Explosion proof versions with reduced leakage are available as well as ATEX compliant vacuum pumps and compressors.

Class Leading Energy Effceincy

Highly Energy Efficient Design
The use of IE3 motors and optimized air flow geometry decisively reduce your energy consumption and consequently life cycle costs – as does the flexibility offered by the use of variable speed drives.

Variable Speed for Maximum Control of Suction or Pressure
Our integrated frequency converters ensure energy-efficient operation that not only meets legal requirements but also lowers operating costs.

ProCoat to Resist Corrosion and Extend Life Time
Our patented available with the solid dry film coating ProCoat that offers excellent corrosion protection and is ideal for moist applications like drying processes etc. It also repels dust and dirt and provides better resistance against unwanted material entry.

Long Service Life with a low cost of ownership
Service and/or change of gear oil is due after 20,000 operating hours only – depending on the application. This very long service interval translates into many hours of uptime with minimum interruption and low service costs.

Noise Levels are 50 % Lower
Sound engineering has enabled us to reduce the noise level by more than 50 % compared to traditional claw pumps: the VLR 501 for example comes in at only 78 dB(A) for 400 mb