A Tungsten Carbide (WC) Flow Cage is a component within a control valve trim, typically a cage-guided globe valve. It's a cylindrical part perforated with precisely designed holes or slots. Its primary function is twofold:
Flow Control and Characterization: It shapes and directs the flow of fluid (liquid or gas) through the valve. The specific geometry of the holes determines the valve's flow characteristic (e.g., linear, equal percentage, quick opening), ensuring predictable and stable control over the entire range of valve travel.
Guiding the Valve Plug: It acts as a guide for the valve plug, ensuring it moves in a straight, stable line to open or close the flow path, minimizing vibration and wear.
Think of it as the "brains and brawn" of the valve trim—it dictates how the flow behaves while providing critical structural support.