Gas & FuelQuestion 69 of 110
A gas piping system must include a sediment trap (drip leg) ahead of certain appliances. What is the purpose and typical location of the drip leg?
a.To catch moisture and debris before it enters the appliance control, downstream of the appliance shutoff
b.To reduce pressure, at the meter
c.To vent gas, at the appliance
d.To bond the pipe, at the regulator
Explanation
A sediment trap is a capped tee installed downstream of the appliance shutoff and ahead of the appliance control so moisture, scale, and debris drop into the leg instead of fouling the gas valve. It is required at most appliances except those specifically exempt such as ranges and clothes dryers in some codes. The leg must be accessible for cleaning.
Law Reference: IFGC §408.0Practice all 110 questions free — no signup required.
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