Liquid Ring Vacuum Pump – elmo Rietschle G-BH7



Unsurpassed at highest differential pressure

Our revolutionary G-BH7 side channel blowers can create pressure differences of up to 1,000 mbar – more than any other gas ring compressor! So far, the systems used to reach these differential pressure ranges were much louder and larger – or subject to wear. Now the advantages of wear free operation coupled with a low noise level can also be used in the most demanding applications. The G-BH7 vacuum pumps and compressors can work up to 20,000 hours without maintenance down time. These specialist machines have proven their reliability under the harshest of conditions. Their noise level was already impressively low, but our engineers and designers were able to make them even more quiet.


  • Wear free
  • Low operating and energy costs
  • Low noise levels, thanks to acoustic engineering
  • Pulsation free
  • Unaffected by dust or fluff
  • 50/60 Hz voltage range motors
  • Frequency converter as optional extra