What does the term 'fittings' commonly refer to in engineering contexts?

The term 'fittings' in engineering contexts specifically refers to components that connect pipes or tubing together. These fittings serve various functions, including enabling changes in pipe direction, regulating flow, and joining different pipe sections. Common types of fittings include elbows, tees, reducers, and couplings, which are essential for creating a complete and functional piping system.

In contrast, the other options pertain to different categories of equipment and do not align with the meaning of 'fittings.' Mechanical devices for measuring pressure do not function to connect pipes but are instead used for monitoring and control within a system. Electrical equipment for power generation refers to machinery and devices like generators and turbines, which are not related to pipe assemblies. Safety instruments for monitoring, likewise, are tools used to ensure safe operational conditions but do not involve physical pipe connections. Understanding the role of fittings is crucial for anyone working in plumbing or process engineering, as they form the backbone of many fluid systems.