The characteristic performance of the rubber joint is not only to compensate the displacement change caused by the operation of the pipeline equipment or thermal expansion and contraction, but also to reduce the vibration and noise. It can select one product separately or mix the two products. The installation of flexible rubber joints or elastic joints (including valves with elastic joints) on the pipeline can compensate for the elastic changes and installation errors of the pipeline, and can also reduce the damage to other equipment caused by the pipeline sensation. In civil buildings, it is mostly used in water pumping stations and sensational pipelines, and the primary effect is seismic isolation; in industrial buildings, the connection with valves or equipment is mainly to facilitate the repair and replacement of valves and equipment.

Rubber joints are the primary product for connecting pumps, valves and other equipment with pipelines. They should be made of metal casting or welding. The loose sleeves should be made of trapezoidal rubber seals. Under the effect of glands and bolts, the principle of rubber compression and elastic deformation is used to force the seal. The ring deforms between the outer walls of the elastic tube of the joint body for static sealing. The metal and sealing ring are strictly selected according to the performance and user requirements.

The exterior of the material is coated with anti-corrosion paint, and the connecting bolts of each part are made of carbon steel or stainless steel. Because there is a certain gap between the body and the elastic tube, it has certain axial and radial displacement, which can effectively compensate and relieve the thrust of the pipeline and the blind plate in the pipeline, and it can also facilitate the repair and replacement of the water pump and the valve device. The pump valve link rubber joint has the characteristics of good tensile resistance, strong pressure resistance and good sealing performance, and it is also very convenient to install and unload.

The new type of casting flange cooperative rubber soft joint meets the application requirements of various pump and valve high standard projects. Good rubber materials are selected to produce flexible rubber joint parts with strong pressure resistance and simple structure. The characteristics of the application of pump valve engineering.

Compared with traditional cast flanges, this flange is particularly obvious when the pressure level is large. The first is the strong pressure resistance, and it is not easy to show sand holes and other problems that affect the normal operation. The reliability of the product under the high pressure level, and the selection of anti-corrosion treatment methods such as galvanizing, effectively avoiding the cost increase caused by the need for secondary anti-corrosion of the flange within the normal life limit, so it has been widely recognized by users in the application .