New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

When is it appropriate to use a threaded flange?

1. For high-pressure systems

2. For quick disassembly

3. For welded connections

4. For sealing against corrosive fluids

The correct answer is: For quick disassembly

Using a threaded flange is most appropriate for situations where quick disassembly is necessary. Threaded flanges allow for ease of assembly and disassembly, making them an ideal choice when components need to be frequently accessed or replaced. This feature is particularly advantageous in maintenance scenarios where time and efficiency are critical. Threaded flanges achieve this by utilizing screws to join the flange to the connecting pipe, providing a mechanical means of connection that can be easily removed without specialized tools or extensive labor. This feature contrasts with other types of flanges, such as welded flanges, which create a permanent bond that is not easily undone without cutting the welds. In summary, the primary advantage of using threaded flanges lies in the convenience they offer for disassembly, making them suitable for applications requiring regular maintenance or adjustment.