As a project manager, engineer or field technician one of the most important parts of your job is selecting the equipment that you’ll be responsible for throughout its service life. Control valves are vital to how a system functions, and if not sized and selected appropriately, can be major pain points. Sizing a control valve is something most understand to be a necessary and vital part of any project. The dirty little secret that most are unaware of: selecting the correct controller for a valve can be the key to a long lasting, low maintenance system. The following information will.