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When the double-flange limit expansion joint is in operation, the greater the pressure is, the larger the pressure plate will push the seal ring to become tighter, thus achieving the purpose of using the double flange limit expansion joint.
The double-flange limit telescopic joint is composed of metal casting or welding, and the loose-sleeved part is a trapezoidal ring rubber seal ring. Under the action of the pressure plate and the bolt, the principle of compression elastic deformation of rubber is utilized. The sealing ring is forced to deform between the outer wall of the bellows of the joint body for static sealing. Metals and seals are selected strictly according to the performance and user requirements. The material of the double flange limit telescopic joint is coated with high-strength anti-corrosion paint externally, and the connecting bolts of each part are made of high-strength carbon steel or stainless steel bolts. Because there is a certain gap between the body and the telescopic tube, it has a certain axial and radial displacement. The effective compensation and mitigation of the blind plate thrust in the pipeline can also facilitate the installation, maintenance and replacement of pumps and valves. It is actually the most ideal accessory product for pipeline installation and operation.