The AIRman V254010421-K12-BLK is a reliable 3-port, 2-position push-pull combination valve with an air pilot, designed for single-acting cylinders and lift axle applications. Featuring 1/4" NPT inlet and outlet ports, this rugged valve is built to provide dependable and long-lasting control. Width: 1.8” Height: 5.5” Thickness: 1” Cross-Reference: Hendrickson VS-30428, Apsco VX-3, Automann 173.V232033, C-30428 Application: Single Acting Cylinder, Suspension Dump