Pressure Control 101: An in depth look at pressure controls on common steam boilers. You will learn the different types of pressure controls names, functions, and how each impacts the efficiency and operation of your boiler. Weekly Boiler Tips are compiled by the knowledgeable and remarkably prolific content creators at WARE, a family owned, third-generation, 69-year-old commercial and industrial boiler rental and service firm based in Louisville KY. You can learn all about this and more at WARE’s Boiler University.