What is the purpose of using threaded connections in pressure piping?

Threaded connections in pressure piping are primarily designed to allow for easy assembly and disassembly. This feature is particularly advantageous in various applications where maintenance or modifications to the piping system may be necessary. If a section of piping needs to be replaced or serviced, threaded joints can be unscrewed without the need to cut into the piping, thereby facilitating quicker repairs and minimizing downtime.

In addition, threaded connections can accommodate adjustments in piping layout, allowing for flexible designs. This is essential in complex piping systems where fittings may need to be repositioned for effective fluid flow or to avoid obstacles during installation.

While permanent connections can be achieved through methods like welding, and while minimizing space may be a consideration in certain designs, these are not the primary intention of threaded connections. The overall strength of the joints also does not depend solely on threading; instead, it is influenced by the materials used, the design of the threads, and the application of proper sealing compounds. Thus, the main benefit of threaded connections lies in their practicality for maintenance and adaptability within pressure piping systems.