Description
The Maxitrol M520B-3/4 is a precision 3/4-inch modulating gas valve engineered for use in the Maxitrol Selectra Electronic Modulation System on indirect-fired atmospheric burner applications. Unlike conventional on/off gas valves or motor-driven butterfly valves, the M520B-3/4 provides instantaneous, non-fluctuating, continuous modulation of gas flow — delivering responsive, accurate temperature control without the wear and complexity of mechanical actuators.
Key Features
- Connection Size: 3/4" NPT
- Burner Application: Indirect fired atmospheric burners
- Maximum Inlet Pressure: 1/2 PSI (7" W.C.)
- Coil Current Draw: 0.5 Amp
- Overall Dimensions: 7-1/2" x 6" x 3-1/2"
- Low Fire Adjustment: Both sides fitted for low fire adjustment
- Compatible Gas Types: Natural gas, manufactured gas, mixed gases, liquefied petroleum (LP) gases, and LP gas-air mixtures
- Compatible Selectra Systems: Series 14, 44, 94 amplifiers and temperature selectors
