Skyjack 147889 Counterbalance Valve

The Skyjack 147889 is a hydraulic counterbalance valve designed for load holding and controlled motion applications in aerial work platform hydraulic circuits. It features a pilot-operated spool design rated for 4000 psi operating pressure, preventing uncontrolled cylinder descent in the event of hose failure or overload conditions. This component is engineered as a direct OEM replacement for Skyjack scissor lifts and vertical mast lifts including the SJ12, SJ16, and SJIII 3220, 3226, 4626, 4632, 4740, 3215, and 3219 models. The valve ensures stable platform positioning and safe lowering speeds under varying load conditions. Construction materials consist of hardened steel internal components with corrosion-resistant plating suitable for mobile hydraulic systems.