What is the role of the flange of the rubber expansion joint?

Flanges of different materials can play different advantages and characteristics in use, to be used in accordance with certain production standards and ways to ensure that they can show good performance and advantages.
When the rubber expansion joint and pipeline centrifugal water pump coupling, in the test pressure of all the normal operation of the course, the rubber expansion joint suffered a very large impulse, the joint will continue to receive a certain amount of torque, this interaction will be effective to the rubber expansion joint flange, therefore, for the joint, if the flange quality is not very good, the joint is likely to be endangered use term. The sealing of the joint is also more related to the flange, in order to avoid leakage when carrying out the flange connection, usually to apply a strong pressure together. If the quality is not very good, it is possible that the flange has not been applied to create problems.
The better the rubber expansion joint flange and its material has a greater correlation, the better the material the more durable the rubber expansion joint flange. At this stage, the excellent joint flange material on the market is mainly cast steel flange and forged flange, these two materials are very common flange applications, forged flange is based on the cast steel flange to achieve the manufacturing, its hardness and quality than the quality of cast steel flange is much better. So forged flange quality to be a little better than cast steel flange, the price is a little more expensive. If the flange quality is not very good, the joint is likely to be jeopardized by the use of term.