Parallel PRVs Unlocked: Optimize Steam Control with One-Third Sizing - Weekly Boiler Tip

In this installment of Weekly Boiler Tips learn how to set up parallel pressure relief valves for maximum redundancy and tighter downstream pressure control. Learn why sizing your small PRV at one-third capacity and setting it 3–5 PSIG below your main valve keeps you running smoothly under light loads—and automatically brings the big valve online when you need it. 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.