The towed engine-driven MC compressors have a well-balanced frame and twin air tanks to reduce the anti-condensed-water effect. They are fitted with a pneumatic self-regulating device, which stresses the engine only during the air tank recharge, this way reducing: - parts wear-and-tear - fuel consumption - noise and exhaust gases They are also endowed with a 3/8” filter/lubricator and a safety retaining valve.