Hot Air Balloons - scenebykimberly
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High Horizon and its two burners
Pilots: Debby Standefer | Rocky Bailey
There is a blast valve allowing the pilot to adjust the rate at which fuel flows from the tanks. To draw fuel into the burner, the pilot simply pulls the trigger on his blast valve. The liquid propane gas is carried under pressure from the fuel tank to the burner, where it is set on fire by the pilot light.

A pressure gauge on the burner tells what this pressure is. The propane is transferred from tanks in the basket through a flexible hose to the burner system. The fuel goes through coils on the burner which vaporize the liquid gas.

Then the pilot light ignites the vapor, sending a six-to eight-foot flame into the envelope, making a loud whooshing sound and adding heat at the rate of 12 million BTU's (British Thermal Units) per hour.