Ross Controls Y1523B4102 Manual Lockout Valve

The Ross Controls Y1523B4102 is a 3/2 manual lockout valve in the 15 Series with EEZ-ON soft-start, built for safe energy isolation in pneumatic systems. It has a 1/2 in NPT inlet and a 3/4 in NPT exhaust, with a yellow body and blue handle that clearly identifies the lockout device and its OFF position. Soft-start gradually re-applies pressure to downstream lines to prevent abrupt movement, while fluorocarbon slipper seals ensure dependable shifting after long periods of inactivity. An integrated sensing port allows pressure verification with accessories such as a pop-up indicator or electrical pressure switch, and the full-size exhaust ports are threaded for silencers or remote exhaust lines. The body is cast aluminum, providing a strong yet lightweight construction, and the valve is designed so that only OFF can be locked, supporting group lockout procedures. Typical applications include isolating pneumatic circuits in manufacturing automation, packaging lines, plastics molding, and other safety-critical processes where a controlled restart is essential. Compatibility notes indicate availability of LOX sensing-port accessories and lockout devices in the Ross family, enabling a compact, compliant safety solution.