The double flange electric ball valve is the flange connection of the electric ball valve of both parties. The electric ball valve and the valve can be connected to the electric ball valve when installed. It is limited by a loose combination of short sleeve and flange pipe, which can prevent the electric ball valve from leakage and damage due to excessive compensation of joint displacement. It is mainly used in the range of allowable absorption of axial displacement and axial displacement to connect the loose thrust of the pressure electric ball valve. Connection with flange, installation, product adjustment and flange connection are electric ball valves at both ends of the right angle length. Both sides compress the nuts and bolts in a consistent manner, and then adjust the nut limit, so that we can make the internal electric ball valve with free and flexible stretching amount, lock the stretching amount, and ensure the safe operation of the electric ball valve. The double flange electric ball valve has the advantages of simple structure, simple assembly and disassembly, and can compensate the displacement, deflection and dislocation of the pipeline caused by thermal expansion and cold contraction. It is widely used for the electric ball valve used to transport water, oil, gas and granular powder media on ships and land to connect its limited type electric ball valve, electric ball valve, split expansion joint, spherical joint, etc. The use of electric ball valve indeed brings great convenience to the installation and use of electric ball valve project. As for the transmission mode of the medium used, the electric ball valve is often used on the pressure bearing electric ball valve, so there is a high requirement for the sealing performance of its materials. At present, the products often use high-quality sealing rings to solve this problem. However, for the electric ball valve among them, because it needs to ensure the displacement adjustment caused by the thermal expansion and cold contraction of the electric ball valve, it is often designed with free expansion and contraction, which can still maintain the sealing performance of the electric ball valve within its effective expansion and contraction range, but also brings the strictness to the electric ball valve connected with it and the installation requirements. The electric ball valve for large-diameter pipeline shows no obvious performance in some small displacement of thermal expansion and cold contraction during normal use. However, when the electric ball valve is used under special circumstances, the installation position of the electric ball valve is different, and the effect is often different. The service life of the double flange electric ball valve produced by Dongfeng electric ball valve is relatively long in the same industry. Generally, when the product leaves the factory, our company will spray a layer of high-quality corrosion resistant and wear-resistant coating on the outside of the product as a surface protection layer to protect the electric ball valve from loss. Due to its good wear resistance and corrosion resistance, the double flange electric ball valve product is used by the mine electric ball valve, sewage treatment electric ball valve, desulfurization and dust removal pipeline, powder The electric ball valve for slurry transportation has been installed and used for many times.