New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

The purpose of cast iron drainage fittings is primarily for what type of systems?

1. Pressure flow systems

2. Gravity flow systems

3. Vacuum systems

4. None of the above

The correct answer is: Gravity flow systems

Cast iron drainage fittings are specifically designed for gravity flow systems. These systems rely on the force of gravity to move wastewater and other materials through pipes. The strength and durability of cast iron make it ideal for these applications, as it can withstand the weight of the water and the potential stresses associated with the movement of waste. In gravity flow systems, the fittings must ensure smooth transitions and connections, minimizing resistance to flow and preventing blockages. Cast iron's ability to handle high loads and its resistance to corrosion contribute to its effectiveness in these types of drainage applications. Other systems, such as pressure flow or vacuum systems, typically require different materials and designs to handle their specific operational pressures and requirements, making cast iron drainage fittings unsuitable for those applications.