In low-pressure systems, unions provide easy disassembly.

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Multiple Choice

In low-pressure systems, unions provide easy disassembly.

Unions are fittings designed to connect two pipe sections in a way that lets them be separated again without cutting or welding. In low-pressure systems, this is especially valuable because you can unscrew the union, take apart the joint for inspection or maintenance, and reassemble quickly. The ease of disassembly comes from the threaded or quick-connect nut and the gasket or seal between halves, which avoids permanent joints. This is why unions are favored in low-pressure piping: they simplify maintenance and reduce downtime. Welding, in contrast, would make disassembly far more difficult and time-consuming, and saying they aren’t used contradicts their basic purpose, so the statement is correct.

Unions are fittings designed to connect two pipe sections in a way that lets them be separated again without cutting or welding. In low-pressure systems, this is especially valuable because you can unscrew the union, take apart the joint for inspection or maintenance, and reassemble quickly. The ease of disassembly comes from the threaded or quick-connect nut and the gasket or seal between halves, which avoids permanent joints. This is why unions are favored in low-pressure piping: they simplify maintenance and reduce downtime. Welding, in contrast, would make disassembly far more difficult and time-consuming, and saying they aren’t used contradicts their basic purpose, so the statement is correct.

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