Eldridge Products, Inc.

Eldridge Products, Inc. (EPI) is the premier thermal mass flow meter manufacturer in the world. The company was founded in 1988 by the president and CEO, Mark Eldridge, and has been an industry leader for nearly 30 years, specializing in manufacturing thermal mass flow meters and other flow meter related technology.

EPI produces the Master-Touch™ and ValuMass™ brands of thermal mass flow meters and thermal mass flow switches. Trademarked brands for these thermal mass flow meter products include EPI™, Master-Touch™, EpiCom™, FAT™, E-Logger™, LightWire™, ValuMass™.

EPI’s state-of-the-art thermal mass flow sensors can detect mass flow rates, from very low to very high mass flow velocities, with an unparalleled level of accuracy. Our experienced staff and engineers are helping many organizations use this thermal mass flow meter technology to go “Green”, by successfully tracking and managing their gas usage.