
Compared with the usual elastic joint on the pipeline and valve maintenance more powerful, will not be in operation to present the phenomenon of leakage, so double flange limit expansion joint on the pipeline with valve fittings, valve repair time disassembly and lifting with double flange limit expansion joint will be more convenient. Double flange limit expansion joint is mainly used in large electric power engineering pipeline, pipeline with valve and pump and some other pipelines that need to offset.