🔍 Key Concepts

• Disassembly for maintenance – which fitting lets you easily break a line without cutting or unthreading long sections • Difference between a union, flange, coupling, and nipple in pipework • How pumps are usually removed or swapped out in tight machinery spaces

💭 Think About

• Which of these fittings is specifically designed to allow two sections of rigid pipe to be separated and rejoined quickly? • If the pump needs to come out without disturbing a lot of other piping, which fitting would minimize the amount of pipe you have to move or unscrew? • Think about which fittings are normally permanent joins, and which are intended as a convenient break point in the line.

✅ Before You Answer

• Identify which items are primarily used to join pipes permanently versus for easy disconnection • Consider which fitting can be opened and reclosed without rotating the pipes themselves • Eliminate any fittings that are just short pieces of pipe or simple straight connectors with no built‑in break point