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The design ensures unrestricted flow, meaning there is no significant pressure or volume loss during fluid transfer.

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. 120581

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 The design ensures unrestricted flow, meaning there is