Bypass CDLF, CR, VS, MVI

Bypass is used to prevent vapor lock in vertical multistage pumps. Vapors are discharged from the upper part of the working chamber of the pump through a thin copper tube into the suction pipeline. When pumping hot liquids (water, alcohols, ethers, etc.) whose temperature approaches the boiling point, a vapor-air lock is formed in the upper part of the pump, which leads to a drop in performance and pressure of the pump unit In addition, in this mode of operation, the mechanical shaft seal dry running mode, which inevitably leads to failure.