New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

Is the nominal pipe and fitting size recommended for use with an 18 inch pipe wrench 1 inch to 2 1/2 inch?

1. True

2. False

3. Only for small fittings

4. 1 inch to 2 inch

The correct answer is: False

The statement regarding the nominal pipe and fitting size appropriate for use with an 18-inch pipe wrench being 1 inch to 2 1/2 inches is indeed not accurate. An 18-inch pipe wrench is generally suitable for larger pipe sizes, typically from 1 inch up to around 4 inches in nominal size, depending on the specific design and application of the wrench. Therefore, saying that the size is only 1 inch to 2 1/2 inches is misleading, as many applications for an 18-inch wrench would involve handling larger pipe diameters. It is essential to understand that the size range for a pipe wrench is influenced by both the design of the wrench and the type of materials being worked on. For the best results, it's crucial always to select a wrench that can manage the diameter of the pipe being worked on effectively. This ensures proper torque application and minimizes the risk of damage during service.