Xylem-McDonnell & Miller 250-2-30 2 Inch Relief Valve 30# #183025

The Xylem-McDonnell & Miller 250-2-30 2-Inch Relief Valve is an essential safety component for a range of HVAC systems that use steam or water, such as hydronic heating units, boilers, and water heaters. It protects these systems from the build-up of excessive pressure, which can cause damage or even explosions. The relief valve functions similarly to the safety release of a pressure cooker. In the case that the system pressure rises above the predetermined 30 pounds per square inch (psi), the valve automatically opens to release the excess pressure and stop damage. Its 2-inch-diameter connector guarantees enough flow to relieve pressure. The device and the user both benefit from this safety feature. The valve shields heaters, boilers, and other parts from expensive malfunctions and possible safety risks by preventing overpressure.