SELECTION,SIZING,AND OPERATION OF CONTROL VALVES FOR GASES AND LIQUIDS

摘要

Proper control valve sizing and selection in today's industrial world is essential to operating at a cost-effective and highly efficient level.A properly selected and utilized control valve will not only last longer than a control valve that is improperly sized,but will also provide quantifiable savings in the form of reduced maintenance costs,reduced process variability,and increased process availability.An undersized valve will not pass the required flow,while a valve that is oversized will be more costly and can cause instability throughout the entire control loop.