Asco is the premier manufacturer of solenoid valves. These are electro-mechanically operated valves, where electric current, through a solenoid, opens or closes the valve.
Founded in 1888, as a manufacturer of elevator control equipment, Asco quickly grew as the first maker of electrically controlled solenoid valves. Bought by Emerson Electric Co. in 1985, Asco had become the leading innovator in flow control devices. Always an innovator, Asco has grown and become Asco Numatics and offers a full product line of flow control and pneumatic solutions.