The KT6 compressor is a three-cylinder, vertical, two-stage with intermediate air cooling, belongs to the group of W-shaped compressors. These compressors are used on diesel locomotives of the TEZ, TE7, TEP60 series, shunting diesel locomotives TEM1 and TEM2.
A modification of the KT6 compressor is the KT7 compressor with a reverse direction of rotation of the crankshaft and used on diesel locomotives of the TE10, TEP10, 2TE10 series.