New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

In drainage systems, which type of fittings would typically be utilized?

1. Plastic fittings

2. Malleable iron fittings

3. Brass fittings

4. Cast iron fittings

The correct answer is: Cast iron fittings

In drainage systems, cast iron fittings are commonly utilized due to their strength, durability, and ability to withstand the weight and pressure of wastewater. Cast iron has excellent resistance to corrosion and can handle high temperatures, making it suitable for various drainage applications. Furthermore, cast iron fittings often provide better sound attenuation compared to other materials, which is beneficial in reducing noise from water flowing through pipes. Additionally, cast iron can be easily joined with other cast iron materials or compatible piping systems, ensuring tight seals that prevent leaks. This makes it a preferred choice in both residential and commercial drainage systems, where reliability and longevity are crucial. Other materials, while also used in plumbing, may not offer the same robustness and reliability for drainage applications as cast iron does.