Selection of double flange rubber joints

Double flange rubber joint is also a new type of pipeline compensation joint, mainly made of carbon steel. Double flange rubber joints made of strict selection of high-strength gray cast iron or stainless steel plate to do the selection of materials, the use of rubber, the use of rubber to reduce the elastic deformation of the basic principle of sealing in the effect of the screw cap and foot bolt. The strict sealing ring is adopted according to the performance index and user regulations. Double single flange rubber joint is suitable for connection with flange, while welding with pipeline, itself with a certain gap between the expansion pipe, so that it has a certain axial and radial offset, can reasonably compensate and reduce the pipeline and blind driving force, conducive to centrifugal pump, gate valve assembly, maintenance and replacement, in fact, is the ideal supporting facilities in the field of pipeline assembly and transportation. Double rubber joints are used in the fields of water supply and drainage, sewage treatment, etc. The key function is the connection between centrifugal pump and gate valve and pipeline, which has certain multi-directional offset effect in pipeline operation, which can reduce the driving force of the blind in pipeline operation, and has certain protective effect on pipeline, especially for pipeline installation and maintenance. However, rubber joints should be selected at the inlet and corner of centrifugal water pumps, because rubber joints can transfer the driving force of the blind when starting the pump to each position of the pump and pipe according to the force-transferring ground bolts, in order to prevent the driving force from concentrating on the near end of the pipe or pump, so that the mechanical equipment will not be damaged by the impact.
One end of the flange rubber joint is electrically welded to the other end of the butt flange, and the sealing ring should be prevented from being damaged by heat throughout the welding process. In order to make the sealing process, in order to make the bearing capacity of the sealing ring proportional, the screw cap nut must be tightened proportionally at the top corner, and a few tightened and then proportionally supplemented. Secondly, after the pipeline equipment is carried out, the original situation of the double flange rubber joint should be in line with the equipment trick regulations, pay attention to the spacing limit L between the two screw caps unremittingly, and within the limits specified in the main parameters of the commodity trick.