The VFD series is a high performance variable speed rotary screw air compressor package that can be used in a wide range of applications. The oil free and oil-flooded rotary screw air compressor line is designed to provide reliable and durable machine in the most challenging applications.
[pdf] One of the most significant advancements in screw air compressor technology is the widespread adoption of Variable Speed Drive (VSD) systems. Traditional fixed-speed compressors run at a constant speed, regardless of the actual air demand.
[pdf] The principle of rotary screw air compression is really no different than reciprocating (piston) compression. Both are positive displacement machines that take in a fixed volume of air at atmospheric press.
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