How double-flange limit expansion joints work in pipelines
The main purpose of double flange limit expansion joint is to give a boost to the transmission of medium in the pipeline and to protect the gate valve from a certain extent. The double flange limit expansion joint mainly adopts loose sleeve connection to make up for the shortage of both.
Double-flange limit expansion joint is mainly used for loose sleeve connection of pump, gate valve and other accessories. It can protect the gate valve in the pipeline operation and compensate for the insufficient expansion and contraction of the pipeline. To make up for the radial absorption of the pipeline axial displacement, the specifications of the double flange limit expansion joint are rigidly connected, and the double flange expansion joint can transmit the pivot force. The difference of double flange limit expansion joint is that its compensation amount refers to the adjustment amount during installation and disassembly. Double flange expansion joint is suitable for transporting seawater, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, steam with temperature not higher than 250 degrees and granular powdered substances.
Double flange limit expansion joint is to add a limit device on the basis of the original characteristics of the loose-fitting expansion joint, which is to be locked with double nuts at the larger expansion volume. The pipeline can be freely expanded and contracted within the allowed expansion volume, and once the larger expansion volume is exceeded, it can play a limiting role to ensure the stable operation of the pipeline, which is especially suitable for the connection of pipelines with vibration or with certain slope and bend. Installation brief description: applicable to both sides are connected with the flange, installation to adjust the product both sides and the flange connection length, the top angle successively and evenly tighten the gland bolts, and then adjust the limit nut, so that the pipe in the expansion range can be free to expand and contract, lock the expansion amount to ensure the stable operation of the pipeline.
