BY series oil pumps are the new generation pump products which are improved based on the summary Y, AY series oil pump experience. They come into being also through the research and development of several years and absorbing foreign advanced technologies and by use of modern design means of CFD software analysis. They own the features of reasonable structure, superior performance, high reliability and other advantages. BY Series pumps can be widely used in the petroleum chemical industry, the petroleum refining and the chemical industry as well as transmission of high-temperatures and viscous medium.