Typical high-speed turbine bypass valve applications use a balanced trim to avoid the significant pressure imbalances inherent in turbine bypass operations. That trim inherently leaks, losing hundreds of thousands of pounds of steam over the operational life of the valve normally spanning several years, wasting energy that would otherwise generate valuable electricity.The solution is a pilot-balanced trim, but how can the operational dynamics be counteracted without costly hydraulic actuation?CIRCOR partnered with a U.S. based consulting engineering services company, Stress Engineering, to design and build a test system that could assess a critical dynamic performance condition before installing in a power plant.

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