Honeywell V4944B1083 1-1/4" 2-Satge Pressure Regulating Gas Valve 1.6" Low-3.5" High

The Honeywell V4944B1083 is a two-stage gas valve used for forced-air heating systems. This works by controlling the burner's gas flow and adjusting the heat output according to the thermostat's settings. The valve opens to a low flow stage of 1.6 inches when the heating system first turns on, giving a gradual beginning to heating. The valve automatically moves to a high flow stage of 3.5 inches to facilitate faster heating as the temperature approaches the desired level. This two-stage operation minimizes temperature changes and wastes less energy, improving comfort and efficiency. To put it another way, this valve functions as a tap for your furnace's gas supply.