Type of sealing surface for flange products
The flange products produced by Haokun company are produced according to the needs of customers and meet the technical requirements of customers.There are production standards for different countries, different flange product types, different sizes and pressure levels.In addition, there are many types of flange sealing surface products.There is a RF,MFM.TG.FF. RJ class.The surface (RF) surface is a smooth plane, can also be car dense grain line, sealing surface structure is simple, convenient processing, and easy for anti-corrosion lining, but, this sealing surface gasket contact area is large, the gasket is easy to squeeze to both sides, not easy to press.concave and convex surface (MFM) sealing surface is composed of a convex surface and a concave surface, placed on the concave surface, can prevent the gasket from being squeezed out, so it can be suitable for high pressure occasions.Tenon and groove surface (TG) sealing surface is composed of tenon and groove, Gasket placed in the slot, Won't be squeezed, The gasket can be relatively narrow, Therefore, the bolt force required to press the gasket is correspondingly small, Even when used at a higher pressure level.The bolt size is not too large, thus, It is easier to obtain a good sealing effect than the above two sealing surfaces, The disadvantage of sealing surface is the complexity of structure and manufacture, Replace the gasket squeezed in the slot is more difficult, besides, The tenon surface portion is prone to damage.Attention should be taken during disassembly or transportation, Tenon and groove sealing surface is suitable for flammable, explosive, Toxic media as well as higher pressures. When the pressure is not great, Even with the larger diameter, It also seals very well.Full plane (FF) and ring connection surface (RJ) full plane seal is suitable for low pressure occasions (PN≤1.6MPa) the ring connection surface is mainly used on the neck butt welding flange and the integral flange, the applicable pressure range of (6.3MPa≤PN≤25.0MPa).
