Such expansion joints of the front channel side there are two bellows, we can absorb the horizontal displacement from the elbow segment; rear (balancing side) has a balanced bellows, it can be absorbed from the straight pipe axial displacement. Bend lateral displacement, the big lever on the spherical nut washer around the spherical rotation, while the large lever to withstand the internal pressure of the thrust, so the expansion joint is commonly used in pumps, tanks, compressors, steam turbine at the exit in order to reduce the above equipment force.

Third, the technical parameters table