Butterfly valves for power transformers are generally installed at the flange connections between oil immersed transformers and coolers, radiators, oil storage tanks, and oil pipelines. It is used to open or close the transformer oil circuit during vacuum oil injection and transformer operation and maintenance. It can also be used during accident oil discharge or maintenance oil discharge Adopting a new type of fully sealed inclined contact, with fine processing and good sealing performance, the pressure on both sides is 0.5MPa and there is no leakage.

Several treatment methods are used, including spray painting, plastic spraying, hot-dip galvanizing, and electrogalvanizing

The BDB series plate butterfly valve is a new generation of plate butterfly valves developed based on the characteristics of domestic and foreign products. It is a replacement product of cast iron plate butterfly valves in China. The valve body materials include Q235 steel plate and stainless steel, which eliminates the leakage phenomenon caused by using cast iron in the past. The mating surface of the valve body and valve plate is processed by advanced CNC lathe, with minimal leakage and superior performance compared to products in the same industry. The two ends of the butterfly valve are equipped with "I" shaped sealing rings with a cross-section, which is safe and reliable, and equipped with special shaped bolts. The plate butterfly valve with a tube comes with a section of the connecting pipe that you need, which reduces the leakage surface and saves one flange compared to traditional butterfly valves, making it economical and cost-effective.

The BDZ series vacuum eccentric butterfly valve is made of Q235 steel plate and stainless steel plate, which eliminates defects caused by casting and has no side leakage. The sealing ring on the butterfly plate is made of rubber and special technology to form a solid whole between the butterfly plate and the rubber ring, solving the problem of easy detachment of the rubber ring in the past. This ensures better sealing performance and no leakage of the butterfly valve. The vacuum connecting butterfly valve can come with a section of the connecting pipe that you need, which reduces one leakage surface and saves one flange compared to traditional butterfly valves. The two ends of the butterfly valve are equipped with "I" shaped sealing rings with a cross-section, which is safe and reliable. The butterfly valve is equipped with special shaped bolts.