What should be paid attention to when installing blind flange

　　But in fact, there are many similarities between flange and flange blind plate. For example, there are many types of sealing surface, including plane, convex surface, concave convex surface, tenon groove surface and ring connection surface; It is used for flange connection. It is composed of a pair of flanges, a gasket and several bolts and nuts. The gasket is placed between the two flange sealing surfaces. After tightening the nut, the specific pressure on the gasket surface will deform after reaching a certain value, and fill the uneven places on the sealing surface to make the connection tight.

　　The blind flange can still be connected by flange, that is, the gasket is placed between the two flange sealing surfaces. After tightening the nut, the specific pressure on the gasket surface will deform after reaching a certain value, and fill the uneven parts on the sealing surface to make the connection tight without leakage. However, the flange blind plates with different pressures have different thicknesses and use different bolts.

　　In the oil medium system, the flange blind plate does not need to be galvanized, but when used in other medium systems, the flange blind plate shall be hot-dip galvanized with a minimum zinc coating weight of 610g / m2. The quality of the flange blind plate after hot-dip galvanizing shall be inspected according to the national standard.