VZ series single-stage end suction centrifugal pumps strictly comply with API610 11th Edition centrifugal pumps for petroleum, heavy chemical and natural gas industries. The design of the connection mode between the pump body and the bearing frame, mechanical seal, cooling mode and auxiliary pipeline has been carefully considered. According to the use experience in different environments and general conditions, the problems existing in the design of the previous version have been optimized and solved. The vze/vzf/vzu series pumps have the advantages of high efficiency, good cavitation performance, high temperature resistance and high pressure resistance, and are widely used in pumping systems in different industrial fields.