The main function of double flange loose sleeve limit compensation joint is to extend and compress in a certain range in the pipeline, compensate the displacement caused by thermal expansion and cold contraction of pipeline, and facilitate the installation, disassembly and maintenance of valves and pumps. If the free expansion of the pipeline exceeds the allowable expansion, the limit stud and nut can prevent the connecting pipe from detaching. It is suitable for pipeline connection with vibration, certain slope or turning. This series of products are widely used in the fluid pipeline of urban water supply and drainage, sewage treatment and other industries.