This Burnham Commercial Gas Valve is designed for electronic ignition (EI) systems and is specifically calibrated for use at high altitudes. The valve controls the flow and distribution of natural gas within the heating system, ensuring optimal performance and efficiency. It is compatible with a wide range of Burnham Commercial heating units, providing versatility in application. The valve's high-altitude calibration allows it to function effectively in environments where air pressure is significantly lower than at sea level, making it an ideal choice for installations in mountainous regions or tall buildings.