New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

How many types of valve end connections exist?

1. Two types: welded and threaded.

2. Three types: welded, threaded, and flanged.

3. Four types: welded, threaded, flanged, and clamp.

4. Only one type: flanged connection.

The correct answer is: Three types: welded, threaded, and flanged.

Valve end connections are vital components in piping systems, serving as the interface between the valve and the piping. Understanding the types of connections is crucial for selecting the appropriate valve for a specific application. The three types of valve end connections include welded, threaded, and flanged. Welded connections are used to create a permanent joint between the valve and the piping. This type is especially beneficial in applications where a tight seal is required and where the risk of leaks must be minimized, such as in high-pressure systems. The welding process also allows for better structural integrity. Threaded connections involve screwing the valve onto piping. This type is often used for small-diameter pipes where quick assembly and disassembly are necessary, providing flexibility for maintenance or replacement. Flanged connections comprise a flat piece of metal with holes for bolts, allowing the valve to be easily connected to other piping components. This type is particularly favored in larger systems due to its ability to withstand high pressures and ease of access for maintenance. While the answer identifies flanged and welded connections, it correctly includes threaded connections, thereby encompassing all common methods used in piping systems, and demonstrating a comprehensive understanding of valve connections. The inclusion of only one type or limited types fails to acknowledge the practical and diverse