New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What is the common use of a slip-on flange?

1. To create a tight seal

2. To facilitate welding

3. For easy disassembly

4. For high-pressure applications

The correct answer is: To facilitate welding

A slip-on flange is primarily designed to facilitate welding during the assembly of piping systems. This type of flange offers a convenient method of connecting pipes by allowing them to slide into the flange before being welded in place. This feature helps ensure that the alignment is accurate before the welding process begins, streamlining installation and maintenance. While slip-on flanges can be utilized in applications that require disassembly or sealing, the key advantage lies in their ease of welding, which is essential in creating a robust connection in a variety of piping systems. When considering the other choices: creating a tight seal often involves the use of gaskets and bolted flanges, rather than relying solely on slip-on flanges. Easy disassembly is more associated with flanges like blind flanges or those designed for quick connections. Lastly, slip-on flanges are not typically recommended for high-pressure applications, as they may not provide the necessary sealing integrity under those conditions compared to other types of flanges designed specifically for such uses.