We offer Side Channel Blower.KTB Series 150 Mhr. 500 MhrKalbro" Side channel BlowersVacuum Pumps operate oil free and as impeller rotates without contact with the side of the housing, the compression space remains free from wear. The dynamically balanced double sided impeller, loss free flow passage and perfectly designed silencer for low noise operation are some important aspect of our product. Side Channel BlowersVacuum Pumps compress air by volume displacement and operate without metal to metal contact, practically required zero maintenance and lubrication.