The PASSAT WP121L ComSilent and WP151L ComSilent series are air cooled direct drive compressors with three stages manufactured by Sauer. It comes with the latest compressed air treatment system, compressors, control systems and accessories. The balance procudure happens due to the W-Design of the crank drive. The PASSAT series compressors come with a gear box and an oil pump to condensate the drain after every step. The compressor can hold 55 degrees centigrade working temperature. It comes with an encapsulated solution for the ease of maintenance and has a 3.1 inspection certificate to check the final pressure of the compressor at 100%. The spare parts can be obtained easily and the product comes with a lasting service tenure.