Centrifugal Compressors for Process Gasses The KNM's BORSIG “T-Jet” series comprises one and two-stage centrifugal compressors which comply with the corresponding API design standards, such as API 617,API 614, API 670 and others. Power ranges:- Pressure ration: (1,2…6), max.2 stages Capacity/flow : V = (1,200…40,000)m3/h Power : P = (50 …2.500)kW The impeller is the heart of the centrifugal compressor stage. Impellers with backwards curved blading develop a considerably higher static pressure within the impeller blading than impellers with radial blading. The residual kinetic energy (moderate exit velocity) is converted into additional pressure by a long parallel-wall diffusor and a precisely calculated spiral channel. The KNM Group delivers complete units including piping compensators, sound dampers and, if necessary, sound absorbing housings. The compressors can be equipped with an automatic control device. Important in this respect are safety equipments for oil pressure and oil temperature control, for bearing temperature measuring, for vibration control and control of surge limit. The connection to a control centre is possible. If there are several compressors in a plant the automatic operation of these compressors can be guaranteed by an additional master control.