Gas Fitter Practice · Question
What is the main purpose of a drip leg (sediment trap) installed upstream of a gas appliance control valve?
A drip leg serves as a collection point for dirt, rust, scale, and moisture, preventing these contaminants from reaching and damaging sensitive appliance contro
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Question: What is the main purpose of a drip leg (sediment trap) installed upstream of a gas appliance control valve?
Answer options:
- To collect condensate from the gas line.
- To regulate gas pressure to the appliance. ✅ To prevent moisture and foreign debris from entering the controls.
- To equalize pressure fluctuations in the gas supply.
Correct answer: To prevent moisture and foreign debris from entering the controls.
Explanation: A drip leg serves as a collection point for dirt, rust, scale, and moisture, preventing these contaminants from reaching and damaging sensitive appliance controls.
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