primarily refers to a specialized 4-way evacuation valve manufactured by Graco . It is a directional control valve widely used in industrial fluid management to simplify the filling and emptying of tanks. Core Functionality
It features a tapered, self-seating valve spool that enhances sealing performance and durability. Technical Specifications 120581 Graco Evacuation Valve for Fluid Reclaim Package 120581
It allows operators to switch between filling a tank from a source and emptying that same tank to a destination using a single valve body. primarily refers to a specialized 4-way evacuation valve