The Importance of a Drip Leg on a Gas Line

What is the purpose of a drip leg on a gas line?

a. Traps sediment and metal chips.
b. Traps sulfur.
c. Traps water.
d. Both a and c

Answer:

The purpose of a drip leg on a gas line is to collect sediment, metal chips, and water from the gas, preventing these contaminants from damaging gas appliances or causing inefficiencies. The correct option describing the function of a drip leg is 'd. Both a and c'.

Explanation:

The purpose of a drip leg on a gas line is to trap and collect any condensation or debris such as sediment and metal chips that may be in the gas line. This is necessary to protect the gas appliances and fixtures downstream from these contaminants which could otherwise cause damage or inefficiency in the system. A drip leg typically consists of a small vertical section of pipe with a capped bottom located at a low point in the gas piping system. Its design ensures that heavier particles and water droplets, which have condensed from the gas, are unable to flow with the gas and are instead collected in the drip leg.

Considering the options provided for the purpose of the drip leg on a gas line:

a. Traps sediment and metal chips
b. Traps sulfur
c. Traps water
d. Both a and c

The correct option that describes the function of a drip leg is d. Both a and c. It is designed to trap both sediment and metal chips as well as water, ensuring the gas line remains clean and efficient.