Reduced Maintenance Costs: Avoids expensive full-unit replacements by providing all essential ASCO repair parts in one package

which is required for specific tank insulation thicknesses to ensure the sensing element remains in the top 6 inches of the water column

High Flow Capacity: Minimizes pressure drop to maintain optimal refrigerant velocity and motor cooling efficiency

polytubing barbed fittings for straightforward integration into existing T-4000 series footprints

Maxitrol M520B-3/4 Gas Valve 320720-756 Reduced Maintenance Costs: Avoids expensiveThe Maxitrol M520B 3 4 is a specialized 3 4" NPT Modulating Gas Valve engineered for technical precision in negative pressure (pull through) and indirect fired atmospheric burner applications. As a core component of the Selectra electronic gas flame modulating system, this valve provides instantaneous, non fluctuating temperature control without the need for mechanical butterfly valves or motors. Built with a corrosion resistant brass valve body and a