High Head-Low Flow Centrifugal Pumps

Abstract

Centrifugal pumps that fall into a category defined as high head, low flow pumps are discussed. A brief history of these pump types is presented. The principle of operation and performance envelope are addressed. Comparative data on efficiency, impellers, head coefficients, head-capacity curves and relative cost are presented. Advantages and disadvantages from the design and maintenance point of view are discussed with the intent of providing useful information to aid in pump evaluation and selection.