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In the world of pneumatic conveying, a rotary valve is often viewed as a simple "commodity" component. When a valve fails or a new system is being specified, the temptation to choose the lowest-bidder option is strong. On paper, a budget valve and a high-performance valve look similar—they both have a rotor, a housing, and a motor. However, the "sticker price" of a rotary valve is only the tip of the iceberg. In high-abrasive markets, the Total Cost of Ownership (TCO)  for a