Ingersoll Rand ARO S312LS Manual Air Control Valve

The Ingersoll Rand ARO S312LS Manual Air Control Valve is a 1/4-inch NPT inlet, four-way pneumatic valve designed to route compressed air in compact circuits and control double-acting actuators. It is hand-lever operated with a spring-return, delivering a four-way, three-position function that can direct supply pressure to one port while venting others. The valve body is aluminum with Buna-N spool seals, providing durable operation in industrial environments. Flow is rated around 0.7 CV, enabling reasonable actuation of common pneumatic loads, and the ports are arranged on the side for straightforward plumbing with standard 1/4" tubing and fittings. Typical applications include packaging lines, conveyors, and automation fixtures where precise air-direction control is required.