ASME B73.3-2015 pdf free download

11-02-2020 comment

ASME B73.3-2015,Specification For Sealless Horizontal End Suction Centrifugal Pumps For Chemical Process.
This Standard is a design and specification standard that covers metallic and plastic lined sealless centrifugal pumps of horizontal, end suction single stage, centerline discharge design. This Standard includes dimensional interchangeability requirements and certain design fea tures to facilitate installation and maintenance and enhance reliability and safety of B73.3 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 dimen- sions, size, and location of suction and discharge noz zles, input shafts, baseplates, and foundation bolt holes( Tables1-1,1-1m1-2,1-2m,2-1,2-1m,3-1,3-1,3-2, and 3-2M). Maintenance and operation requirements are not included in this Standard.
3 ALTERNATIVE DESIGNS
3.1 Extended Length Pump Design
An extended length pump design is an option for enhanced mechanical performance Dimensions for an extended length pump design are included in this Standard. The extended length alternative shall conform to the design features of this specification including those providing interchangeability with respect to mounting dimensions at the casing, size, and location of the suction and discharge nozzles (see column heads with e suffix in Tables 1-1 and 1-1M through 3-2 and 3-2M for dimensional limits).
3.2 Close Coupled Design
Close coupled magnetic drive pumps have been allowed as an alternative design. The close coupled arrangement shall conform to the design features of this Standard including those providing interchangeability with respect to mounting dimensions at the casing, size, and location of the suction and discharge nozzles except there is no requirement for a separate pump bearing frame Dimensions for close coupled pump baseplates are included in this Standard.
3.3 Alternative Design
Other alternative designs will be considered, provided they meet the intent of this Standard and cover construc tion characteristics which are equivalent to and other Wise in accordance with these specifications. All deviations from these specifications shall be described in detail.

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