Where must drip tees be placed in gas lines?

Where must drip tees be placed in gas lines?

• A. First change of direction after meter and at any change of direction from horizontal to vertical
• B. Before the meter
• C. At the appliance
• D. At every branch

Answer: (A)

Drip tees are placed to drain condensate from gas piping so liquids don’t accumulate and affect gas flow or cause corrosion. The most effective places are where condensate is likely to settle: at the first change of direction after the gas meter, and at any change from a horizontal run to a vertical run. These locations catch liquid that forms as gas travels through bends and changes in orientation, giving a dedicated drainage path to safely remove it before it continues downstream to appliances. Placing a drip tee before the meter wouldn’t protect the downstream piping, installing one at the appliance misses upstream drainage opportunities, and putting a drip tee at every branch is unnecessary and impractical since many branches remain dry.

Drip tees are placed to drain condensate from gas piping so liquids don’t accumulate and affect gas flow or cause corrosion. The most effective places are where condensate is likely to settle: at the first change of direction after the gas meter, and at any change from a horizontal run to a vertical run. These locations catch liquid that forms as gas travels through bends and changes in orientation, giving a dedicated drainage path to safely remove it before it continues downstream to appliances.

Placing a drip tee before the meter wouldn’t protect the downstream piping, installing one at the appliance misses upstream drainage opportunities, and putting a drip tee at every branch is unnecessary and impractical since many branches remain dry.