A 5/3-way proportional directional control valve (VPWP) features five ports and operates in three states, with flow proportional to solenoid current. It typically functions in electrically controlled hydraulic systems, utilizing a proportional crossover spool design that is spring-loaded to a neutral position. In the neutral state, all paths are blocked, while the end positions connect the ports differently, allowing fluid flow. The valve includes essential ports for pump and tank connections, as well as extend and retract functions, with a potential fifth port for signaling or interlock purposes. Understanding the specific application and valve type is crucial for effective use and troubleshooting.