The Kunkle Valve 6010FEE01AAM0150 1" x 1.25" Steam Relief Valve is a safety device designed to protect compatible steam and boiler systems from excessive pressure. It automatically opens when pressure reaches its preset limit, allowing excess steam to escape and helping prevent equipment damage. Commonly used in commercial and industrial boilers, steam heating systems, and related HVA... https://www.partshnc.com/6010fee01aam0150-kunkle-valve-1-x-1-25-steam-relief-valve-150psi-2583pph