Which pipe fitting is a short threaded piece with male threads on both ends commonly used to connect two pipes?

Which pipe fitting is a short threaded piece with male threads on both ends commonly used to connect two pipes?

• A. A pipe nipple
• B. A pipe coupling
• C. A union
• D. A tee

Answer: (A)

Understanding pipe fittings hinges on end threading and length. A pipe nipple is a short piece of pipe that has male threads on both ends, and it’s used to connect two female-threaded fittings or pipes. That exact description—short length, male threads at both ends—fits the part defined as a nipple. A coupling, by contrast, typically has female threads on both ends to mate with male-threaded pipes. A union is designed for easy disassembly and usually involves two ends that connect with a nut, not simply a short piece with male threads on both ends. A tee is a three-branch fitting used to split or combine flow, not a short connector between two pipes.

Understanding pipe fittings hinges on end threading and length. A pipe nipple is a short piece of pipe that has male threads on both ends, and it’s used to connect two female-threaded fittings or pipes. That exact description—short length, male threads at both ends—fits the part defined as a nipple.

A coupling, by contrast, typically has female threads on both ends to mate with male-threaded pipes. A union is designed for easy disassembly and usually involves two ends that connect with a nut, not simply a short piece with male threads on both ends. A tee is a three-branch fitting used to split or combine flow, not a short connector between two pipes.