ASCO was founded in 1888 as a manufacturer of elevator, compressor, and generator controls. In 1910, the company invented a new electrically operated control device known as the solenoid valve. ASCO's heritage of innovation resulted in an extensive line of products that ranged from two position on/off valves to entire flow control systems designed to provide thousands of customer-specific solutions.
In 1985, ASCO was acquired by Emerson, one of the world's largest and most respected industrial corporations. Later in the decade, Emerson purchased Joucomatic, Europe's leading pneumatic valve provider, and added it to the ASCO family.
In 2016, ASCO and Numatics global operations were unified under the ASCO brand, setting the stage for the company's next period of growth.