Sealing principle of flat welding flange

The two sealing faces of the bolt squeeze the flange gasket to form a seal, but this can also cause seal damage.In order to keep the seal,you have to maintain a large bolt force, in order to do this, you have to make the bolt larger. Larger bolts match larger nuts, which means larger bolt diameters are needed to create the conditions for tightening the nuts. However, the larger the bolt diameter, the flange will be bent, the only way is to increase the wall thickness of the flange part.

The sealing problem of the flat welding flange has always been a hot issue related to the production cost or economic benefit of the enterprise, so the sealing principle of the flat welding flange has been improved and improved. However, the main design defect of the flat welding flange is that it can not be leak proof. This is a defect in design: the connection is dynamic and periodic loads, such as thermal expansion and fluctuating loads, will cause mutual movement of flange faces, affect the function of the flange, thus damage the integrity of the flange, and eventually lead to leakage.

BS4504 stainless steel custom flat flanges

BS4504 stainless steel custom flat flanges

No product can be free of defects, but try to minimize the defects of the product, so the company improves the performance of the product as much as possible and plays the largest role in the production of flat welding flange. Features of flat welding flange: flat welding flange not only saves space and weight, but also ensures no leakage at the joint and good sealing performance. By reducing the seal diameter, the size of the compact flange is reduced, so the seal section is reduced.

Secondly, replace the flange gasket with a sealing ring to ensure that the confidential cover matches the sealing surface. In this way, the sealing surface can be tightened with only a small amount of pressure. With the decrease of the required pressure, the size and quantity of the bolts are reduced accordingly. Therefore, a new product with small volume and light weight is designed, which can reduce the weight of the traditional flange by 70% ~80%. Therefore, the plate welding flange is a relatively high-quality flange product, which reduces the quality and space, and plays an important role in the industrial application.

The two sealing faces of the bolt squeeze the flange gasket to form a seal, but this can also cause seal damage. In order to keep the seal, you have to maintain a large bolt force, in order to do this, you have to make the bolt larger. Larger bolts match larger nuts, which means larger bolt diameters are needed to create the conditions for tightening the nuts. However, the larger the bolt diameter, the flange will be bent, the only way is to increase the wall thickness of the flange part.

As a professional flange supplier,we supply high quality many types flange such as weld neck flange,lap joint flange,blind flange,slip on flange,threaded flange,socket weld flange,orifice flange,reducing flange,and so on.If you want to know more about our product,please feel free to contact us.Email:sales@haihaogroup.com

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