In this installment of Weekly Boiler Tips we dive into the mechanics of why a pop-off valve pops and the science behind it. Perfect for those who work with boilers daily! Safety notice: Always consult experts for complex repairs. 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.