This Maxitrol 325-7AL-1 line regulator, sized 1/2" to 1-1/2", is certified to 2 psi under ANSI Z21.80, certification 1250000 B. It's engineered to precisely regulate gas pressure, essential for safe and efficient operation of gas-powered appliances.This regulator ensures consistent pressure delivery, preventing fluctuations that could affect appliance performance. https://www.partshnc.com/325-7al-1-maxitrol-12-1-12--line-regulator-certified-to-2-psi-ansi-z2180-certification-1250000-b