Even small slip-ups or oversights with pressure relief valves can lead to leaks, downtime or early failure. Here are five mistakes we see too often. And, more importantly, how and why to avoid them.
- Running Too Close to the Valve’s Set Pressure
When systems run too close to the valve’s set pressure, it can “simmer” (AKA: slightly leak), which causes wear and reduces efficiency. Give it some breathing room. - Overdoing the Pipe Dope (Thread Sealant)
It’s human nature to go overboard on a “good seal.” Resist! Too much thread sealant can get inside the valve and clog it up. Use sparingly, debris can get on the seating surface and the valve won’t reseat. - Lifting the Lever at Low Pressure
Testing a valve without enough pressure can cause it to leak. Only test a valve when the system is properly pressurized. - Mounting a Valve the Wrong Way
Relief Valves must be installed upright. Installing them horizontally will affect how they work. Always check the orientation specs. - Forgetting to Support the Outlet Pipe
If outlet piping sags or shifts, it can pull on the pressure relief valve and cause misalignment or damage. Keep it supported and aligned.
