How to repair the leakage of double flange electric ball valve: consisting of expansion pipe, body, pressure plate, pressure plate bolt and sealing ring. The main function is to compensate the axial displacement of the pipeline and bear the pressure and thrust of the pipeline. High temperature resistant steel double flange electric ball valve can effectively ensure the operation of circulating water pipeline. A limit device shall be installed in the double flange electric ball valve. The double flange electric ball valve can effectively use its own limiting function to prevent the support of the axial stretching force of the pipeline from freely stretching and compensating within the design range.
The body of the double flange electric ball valve uses its own sealing ring to tightly seal the telescopic pipe body inserted, so that the double flange electric ball valve will not leak during expansion and stretching. The double flange electric ball valve is widely used because it has good functions of double flange electric ball valve. Especially, the double flange electric ball valve is installed in the long-distance pipeline, so that the expansion force of the pipeline can be well absorbed, avoiding the stress concentration of the pipeline and causing damage to the pipeline. The double flange electric ball valve has the function of compensating displacement and can also absorb the axial concentricity effect of pipeline ground subsidence. The double flange electric ball valve makes good use of the gap between its body and casing to compensate these problems. The leakage of double flange electric ball valve products from some small manufacturers occurred during the use of users. Hengchang pipeline technicians believe that the main reason is the valve seal ring used for double flange electric ball valve. Generally, the valve seal ring used for double flange electric ball valve mainly includes O-ring and trapezoidal valve seal ring, which are different, Generally, the O-ring is used in low pressure double flange electric ball valve products, and the trapezoidal valve seal ring is used in high pressure double flange electric ball valve products. The O-ring is simple and convenient to use, and is more convenient to replace. Generally, the service life is about 10 years, but it must be made of high-quality and high-grade valves to achieve good sealing effect, Trapezoidal valve sealing ring is used in high-pressure pipeline, which is troublesome to install and use, but the sealing effect is very obvious. Generally, the main reason for water leakage of double flange electric ball valve is the sealing problem. If the sealing problem is solved properly, there will be no leakage basically. In the pipeline with large pipeline compensation amount, the anti pull off performance of the double flange electric ball valve is also very important. To prevent the double flange electric ball valve from stretching beyond the design compensation amount in the use process, it can ensure the use safety of the double flange electric ball valve product without leakage. The release and pull off can prevent the expansion body from pulling out from the body, Therefore, the use of an effective anti pull off mechanism can well prevent pipeline leakage.