Maxitrol M520-3/4 Gas Valve THPU32HP7Y and nickel-plated brass stem ensure

and nickel-plated brass stem ensure durability and a maintenance-free service life

Key Benefits for Contractors: Universal Compatibility: Serves as a direct replacement for the AT-11-404

Common Questions Is this thermostat compatible with Natural Gas and LP

Is the M411B9 compatible with M511 or M611 series valves

Maxitrol M520-3/4 Gas Valve THPU32HP7Y and nickel-plated brass stem ensureThe Maxitrol M520 3 4 Gas Valve is a 3 4 inch NPT modulating gas valve engineered specifically for atmospheric, indirect fired burners used in commercial and industrial space heating. As a core component of the Selectra electronic gas flame modulation system, this valve provides instantaneous, non fluctuating temperature control without the need for external mechanical activation, motors, or butterfly valves. The M520 3 4 modulator valve is