Developing Alternative Technology to Improve Product Performance
Industrial product engineering teaches us to understand the difference between problems and conditions. Control valve engineering in particular presents a variety of problems that interplay to reduce reliability.
Regardless of how the metering plug or the flow path is shaped, the fluid must make several turns to pass through a sliding stem, plug-in-seat globe control valve. Due to that design condition, damage from extended operation at high pressure drop is a problem. However, a solution to the problem is constrained by the condition, and the dominance of the condition stifles innovation in a mature product line.