What are advantages of large flanges?
Large flanges not only have different use values, effects and functions, but also have various materials, production processes and processing methods. Thus, we have to pay special attention to the methods of both processing and utilizing large flanges.(Manufacturing process and application of large flange)
Common large flanges include plate flanges and weld neck flanges. Plate flanges have poor rigidity and are suitable for the conditions when the pressure is lower than or equal to 4Mpa. Weld neck flanges, also known as high-neck flanges, have high rigidity and are applicable to conditions with high pressure and temperature. There are three types of large flanges’ sealing surfaces: flat face, concavo-convex surface and tongue and groove surface. These large flanges are adaptive to different conditions and spaces and can result in different effects.
The gasket used for the large flange is a ring with a certain strength, which can produce plastic deformation. Most of the gaskets are cut from non-metallic plates or produced by professional factories according to the specified sizes. The materials of gaskets include asbestos rubber sheets, asbestos boards and polyethylene plates. There are also spiral wound gaskets produced by twisting the thin steel belts and the asbestos tapes together.
The large flange connection is mainly used for the connections of cast iron pipes, rubber lined pipes, non-ferrous metal pipes, large flange valves, etc. Large flange connection features in easy disassembly, high strength as well as good sealing performance. When install large flanges, the two large flanges should be kept parallel, whose sealing surfaces should not be hurt and must be cleaned up.
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