Plate Flange Features That Must To Be Known

  The sealing surface of the flange is a smooth plane, and sometimes there are two concentric grooves with a triangular interface on the sealing surface. Because the structure is simple, the processing is convenient, and the construction of the anticorrosive lining is convenient, it can be used when the nominal pressure is less than 2.45 MPa. It is particularly suitable in a place below 0.588 MPa and at a low temperature. However, the contact area between the sealing surface and the gasket is large, and the required pressing force is large, and the gasket is not suitable for positioning during installation. After preloading, the gasket is easy to stretch or move to both sides. Therefore, if the friction coefficient is small, such as PTFE, it is not suitable to use this kind of sealing surface. In addition, if a wound gasket is used, in order to reuse the gasket, the triangular groove is not formed on the sealing surface.