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Danfoss Turbocor Compressors Inc. introduced the VTT line of compressors with IntraFlow technology, a patent-pending technology for improving compressor efficiency and providing an extended stable operating range while simplifying capacity control. The VTT (Variable Twin Turbo) Series of compressors are available with nominal capacity ranges from 200-350 tons for voltage applications between 380-460 V as well as 575 V. These models are intended for water- or evaporative-cooled chiller applications. Based on TT Series compressor technology, the VTT models are oil-free, variable-speed, magnetic-bearing centrifugal compressors. VTT compressors also include newly developed control electronics capable of USB, Ethernet, and wireless communication.