Flange connected valves and pipelines are easy to install and disassemble, but flange connected valves are heavier than threaded valves, and the corresponding price is also high, so it is suitable for pipe connection of various diameters and pressures. When the temperature exceeds 350 ° C, the thousand bolts, gaskets and flanges will become loose, which will also significantly reduce the load on the bolts and may cause leakage to the flange connection under great stress.
Flange connection is actually convenient for disassembly. One side is used on the end loop of equipment and idle door. Flange connection can be selected to facilitate disassembly, while threaded connection is sometimes convenient for disassembly, but its pressure level is not high. The connection form of flange also has threaded connection, but it is connected to pipe fittings with smaller diameter and larger thickness. There are strict rules for this relationship in design. Check the design manual.