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ISO 3661:1977
End-suction centrifugal pumps -- Baseplate and installation dimensions
Specifies basic dimensions and gives alternative numbers and locations of baseplate fixing holes to suit individual installations. Covers the baseplate numbers from 2 to 9. The data given are intended primarily for use with pumps in accordance with ISO 2858, coupled to foot-mounted electric motors for installation on a foundation.
International Organization for Standardization [iso]