The Maxitrol 325-5L-3/4" Gas Pressure Regulator is a dependable device engineered to maintain precise gas flow and pressure control for HVAC systems. Designed for use with furnaces, boilers, water heaters, and other gas-fired appliances, it automatically reduces and stabilizes inlet pressure for consistent performance. https://www.partshnc.com/maxitrol-325-5l-3-4-3-4-gas-pressure-regulator