本标准为设计和规范标准 包括垂直轴的金属离心泵 带有吸入和排出喷嘴的单级设计 在线。本标准包括尺寸互换性 要求和某些设计特点 以便于安装和维护 B73.2泵的可靠性和安全性。这是 本标准规定了具有相同标准尺寸的泵 所有供应源的名称应为 相对于安装尺寸可互换， 吸入和排出喷嘴的尺寸和位置（参见 表1）。维护和操作要求如下 未包含在本标准中。

This Standard is a design and specification standard that covers metallic centrifugal pumps of vertical shaft single-stage design with suction and discharge nozzles in-line. This Standard includes dimensional interchangeability requirements and certain design features to facilitate installation and maintenance and enhance reliability and safety of B73.2 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 (see Table 1). Maintenance and operation requirements are not included in this Standard.