ARO M514LR 4-Way Manual Air Control Valve

ARO M514LR MaxAir four-way, three-position manual air control valve with a rotary lever actuator provides precise directional control for pneumatic systems that use 1/2" NPT ports. Built with an aluminum body and Buna‑N seals, it supports non-lubricated or lubricated air and is rated for 20–140 psi operating pressure with temperatures from 15°F to 122°F (-10°C to 50°C). The center position is closed, and the valve returns manually, enabling secure stopping and manual reconfiguration of flow paths without power. With four ports and a Cv of 2.4, it delivers up to about 85 standard cubic feet per minute (scfm) of flow for the 1/2" size, making it suitable for driving both single-acting and double-acting cylinders or air motors in packaging, material handling, and similar applications. External dimensions place the unit at roughly 4-5/16 in high by 2-15/16 in deep and 2-15/16 in wide, and it includes a panel-mount nut for easy installation; exhaust and port connections are 1/2" NPT, with 1/2" exhaust ports as standard options. Commonly selected for MaxAir installations where a reliable, manually actuated valve is required to lock lines in a given state or transition between pneumatic circuits, the M514LR variant is offered in multiple port configurations (4-way) to match system piping. For use with packaging lines, conveyors, and air-driven tooling, this valve provides robust, inertial-free control without electrical power.