Válvula are indispensable control elements in fluid piping systems, and they can be connected to pipelines in various ways to suit different application scenarios and fluid properties. Below are some common Vál
Additionally, flange connections are relatively heavy and occupy more space. The standards for flange connections mainly include the following aspects: According to the shape of the connection surface and the sealing structure, flanges can be divided into flat welding flanges, butt welding flanges, and loose set flanges. The size of the flange is usually expressed in terms of the nominal diameter (DN) of the pipeline, and flange sizes may vary across different standards. The pressure rating of a flange connection is typically indicated by PN (European standard) or Class (American standard), with different ratings corresponding to different working pressures and temperature ranges. The sealing surface of flanges can take various forms such as flat face, raised face, concave-convex face, and tongue-and-groove face, and the appropriate sealing surface form should be chosen based on the nature of the fluid and sealing requirements.
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