Chimney Safety Institute of America (CSIA) Certification Practice Test

What is the name of a pipe that passes through a wall, goes up the wall, and ends at a slanted cap?

1. Flue pipe

2. Chimney liner

3. Snorkel vent

4. Ventilator pipe

The correct answer is: Snorkel vent

The correct answer is snorkel vent. A snorkel vent is specifically designed as a horizontal discharge pipe that typically runs through a wall and allows for the venting of gas appliances, often terminating with a slanted cap to help direct flue gases upward and away from the building. This design assists in preventing backdrafts and improving the efficiency of the gas venting system. In contrast, the other options refer to different components of venting and chimney systems. A flue pipe is a general term for a pipe that carries exhaust gases from a fireplace, boiler, or furnace but does not specifically describe the horizontal aspect or the termination style. A chimney liner serves as a protective barrier within a chimney, guiding the exhaust up through the chimney structure itself, rather than through a wall. Lastly, a ventilator pipe is a generic term that can refer to various types of pipes used for ventilation purposes, but it does not specify the unique characteristics of a snorkel vent, which is crucial in certain venting scenarios.