New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What type of pipe is commonly used for laboratory drainage?

1. Cast iron

2. Silicon iron

3. Steel

4. PVC

The correct answer is: Silicon iron

The commonly used pipe for laboratory drainage is typically PVC (Polyvinyl Chloride). PVC is favored in laboratory settings primarily due to its resistance to a wide range of chemicals, which is crucial when dealing with various substances that may be toxic or corrosive. Its durability and lightweight nature also make it easy to handle and install, contributing to its popularity in drainage systems. Cast iron pipes are known for their strength and sound-dampening properties, making them suitable for sewage and drain applications but not ideal when it comes to chemical resistance found in laboratory settings. Silicon iron, while having good corrosion resistance, is not typically utilized for drainage systems. Steel pipes are strong and durable but can corrode when exposed to moisture or certain chemicals, making them a less favorable option for laboratories where chemical reactions are common. Therefore, in the context of laboratory drainage, PVC stands out as the best choice due to its chemical compatibility and practical benefits.