Expansion joint before installation should check its type, specification and pipeline configuration, must comply with the design requirements. The expansion of inner sleeve should be paid attention to make the double flange expansion amount limit expansion lock, the purpose of the inner sleeve bobbin in the direction of the flow in the same direction with the media, hinged expansion of hinge rotation plane should be consistent with the rotational plane displacement. The expansion needs to be "cold" tight, redecoration auxiliary components should be used in pipe installation is removed. It is forbidden to use expansion deformation method to adjust the pipeline installation error, so as not to affect the normal function of the expansion, to reduce the service life of the components and piping, equipment, supporting the load. Installation process, do not allow the slag splash to the shell surface, do not allow the wave shell by other mechanical damage.
Limit expansion joint locking, the purpose of expansion amount limit expansion pipe after the installation, should be removed as soon as possible wave expansion pipe used for install transport auxiliary positioning components and fasteners, and will be transferred to limit device, according to the requirements of design conditions of piping in sufficient compensation ability. Expansion pipe all active components shall be external components are jammed or the scope of its activity, should be the normal movement of active part. Hydrostatic test, coping with expansion pipe end part time fixed tube rack for reinforcement, the moving or rotating tube will not occur. For the expansion gas medium and its connecting tube, pay attention to the water filling whether need to add temporary support. Hydrostatic test water cleaning fluid 96 chloride ion content is not more than 25 PPM. Expansion pipe using range: due to the expansion appliance has the good comprehensive performance, so it is widely used in chemical industry, building, water supply, water drainage, oil, light and heavy industry, freezing, sanitary, plumbing, fire protection, electric power and other infrastructure. Expansion instructions: to adjust product expansion pipe installation ends or the installation of flange length, diagonal evenly tighten gland nut, adjust limit nut again, so you can let the pipeline within the scope of the expansion amount can be telescopic, locking expansion amount, to ensure the safe operation of pipeline.
