Atlas Copco Mafi-Trench Company LLC has produced custom engineered hydrocarbon turboexpanders and expander generators since 1975.

Atlas Copco Mafi-Trench Company, located in Santa Maria, California, is part of the Atlas Copco Gas and Process division. The company is a world leading manufacturer of custom engineered hydrocarbon radial expansion turbines, or "turboexpanders." Atlas Copco Mafi-Trench Company's turboexpanders, for process and power recovery applications, are in service worldwide. Industries served include natural gas processing, petrochemical, hydrogen purification, dew point control, waste heat recovery, and geothermal power generation.

The company's manufacturing design is the standard of excellence, incorporating innovative features that optimize performance and reliability. With each passing decade, Atlas Copco Mafi-Trench Company's superior service, quality, and reliability helped establish itself as the premier hydrocarbon turboexpander and expander generator supplier.