In an isometric drawing, which type of elbow is typically threaded?

In an isometric drawing, threaded elbows are often represented due to their common use in piping systems where easy disassembly and maintenance are essential. Threaded elbows are fittings that utilize a helical ridge, or thread, on the end of the pipe, allowing for connection without welding. This type of elbow is favored in applications where pipes may need to be regularly disconnected for service or replacement.

Threaded fittings are particularly advantageous in smaller diameter piping systems, where welding could introduce complications such as distortion or added labor costs. Unlike butt weld, socket weld, or flanged connections, threaded elbows provide the simplicity and speed of connection without requiring specialized welding skills or equipment.

The other types of elbows, such as butt weld, socket weld, and flanged, typically serve different purposes or are used in different contexts. Butt weld elbows are permanently welded and are often found in systems that require a leak-proof and durable connection. Socket weld elbows are also welded but are used in a specific manner that requires a different type of joint preparation. Flanged elbows involve a bolted connection and provide flexibility for disassembly but are bulkier and require additional components. Thus, the unique advantages of threaded elbows make them commonly depicted in isometric drawings, which emphasize clarity in design and assembly