Working Principle of Dismantling Joint Coupling and Expansion Joint

Expansion joint and dismantling joint coupling are similar in appearance, many people will confuse them at first time. Today we introduce you the working principle of dismantling joint coupling and expansion joint.

Expansion joint and dismantling joint are widely used in modern pipeline to connect pump and valves to piping. Commonly seen models of dismantling joint coupling includes VSSJAF double flange dismantling joint coupling, VSSJAFG single flange dismantling joint and VSSJAFC detachable double flange dismantling joint. Commonly seen models of expansion joint includes VSSJA flange adaptor, VSSJA-1 single flange limit expansion joints, BSSJA-2 double flange limit expansion joints and SSJB mechanical pipe coupling.

In appearance, the biggest difference of dismantling joint and expansion joint is whether the bolts extrude the flange end face. In general condition, if bolts extrude the flange face, it most likely the dismantling joint coupling; and if not extrude the flange face, it most possibly the expansion joint. Do you know what is the working principle of dismantling joint and expansion joint?

What’s the working principle of expansion joint? the metal expansion joints will make movements freely under allowable movements value, once exceed the movements, the limited rods will make affects and limit the movements and protect the metallic expansion joint, in this way to ensure safety operation of the pipeline.

What’s the working principle of dismantling joint coupling? Dismantling joint coupling is the protective measure to connect pumps, valves and other equipment with pipes. Dismantling joints can delivery the axial thrust to whole pipeline.

In brief, metal expansion joint compensate pipeline movements and dismantling joint compensate pipeline installation error and deliver axial thrust. If you have other doubts on the working principle of expansion joints and dismantling joints, please email to ins1@lanphan.com.