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Metal expansion joints (MEJ) also called compensators or metal / metallic bellow. An expansion joint/bellow element employed in a piping system is an assembly of generally more than one convolute in series with the shape of the convolution designed to withstand the internal pressures, Thermal expansion, mechanical vibrations of pumps, draft fans, compressors, turbines, motors, vessels and other plant components, but flexible enough to accept axial, lateral, and angular deflections. They consist of one or more metal bellows.
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