What is the main purpose of bolting in a pressure piping system?

The primary purpose of bolting in a pressure piping system is to create a leak-proof joint. Bolting is essential in securing flanges or fittings together, ensuring that the connection between different sections of piping is tight and resistant to the escape of fluids under pressure. A properly bolted joint prevents leaks that could lead to safety hazards, loss of fluid, or system failure.

While structural integrity is important, bolting specifically addresses the need for a secure and leak-proof seal in fluid transport. It is the mechanical means by which components are held together tightly enough to withstand the pressures they encounter during operation. Therefore, ensuring a leak-proof joint is vital for the safe and efficient operation of pressure piping systems.

The other options, while related to systems and functions surrounding pressure piping, do not represent the primary role of bolting in these contexts. Preventing thermal expansion is managed through flex components, while adjusting fluid pressure involves control devices rather than bolting.