Henan Shunying New Energy Co.,Ltd. official website’ s technology column will share a variety of rubber joint industry experience with everyone. It will tell you some correct answers. A drawing lets you understand difference of butterfly valve special flange and common flange. A drawing as following show:

A photo of the special flange for butterfly valve as following.

Wafer butterfly valve flange is also known as butterfly flange or clamp type special flange. It is a special flange for wafer butterfly valve in pipeline installation,which matched with wafer butterfly valve.The main difference between wafer butterfly valve special flange and common flange is the inner diameter of flange.The inner diameter of the special flange just match with the nominal diameter of the required butterfly valve in a groove which can be inserted into the connection of steel pipe, to ensure the wafer butterfly valve sealing effect. If use common flange, butterfly valve sealing effect can not be guaranteed. In addition, the outer diameter, thickness, center distance and bolt hole of the special flange of wafer butterfly valve are the same, the bolts used aredouble end bolt. And the use of bolts is corresponding to different use of the temperature and change. The above content is provided by the official website of Henan Shunying New Energy Co., Ltd.