本标准是一个设计和规范标准，涵盖了卧式、端吸单级、中心线排放设计的金属和固体聚合物离心泵。本标准包括尺寸互换性要求和某些设计特征，以便于安装和维护，并提高B73的可靠性和安全性。1个水泵。本标准的目的是，从所有的供给源泵的同一标准尺寸应与吸入、排出喷嘴、输入轴、底板和基础螺栓孔的安装尺寸、尺寸和位置互换。

This Standard is a design and specification standard that covers metallic and solid polymer centrifugal pumps of horizontal, end suction single stage, centerline discharge design. This Standard includes dimensional interchangeability requirements and certain design features to facilitate installation and maintenance and to enhance reliability and safety of B73.1 pumps. It is the intent of this Standard that pumps of the same standard dimension designation from all sources of supply shall be interchangeable with respect to mounting dimensions, size and location of suction and discharge nozzles, input shafts, baseplates, and foundation bolt holes.