Air Valves are essential components of complete pipeline design. The designed pipeline flow capacity will not be achieved without essential air valves because of air pocket build-ups, which can cause flow capacities to be reduced by 5% to 15% . Unfortunately reduced capacities may go unnoticed, because air is an invisible culprit in pipelines. Air pockets increase energy. Air valves are not expensive and more than pay their way by greatly improving pipeline efficiency. Air Valves represent low cost insurance to protect expensive Pipelines and Pump Stations.