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EN ISO 21049:2004

Pumps - Shaft sealing systems for centrifugal and rotary pumps (ISO 21049:2004) EN ISO 21049:2004

Publication date:   Aug 10, 2006

General information

90.92 Standard to be revised   May 14, 2007

CEN

CEN/TC 12 Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries

European Norm

21.140   Seals, glands | 23.080   Pumps

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Published

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Scope

ISO 21049:2004 specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, flammable and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs. It covers seals for pump shaft diameters from 20 mm (0,75 in) to 110 mm (4,3 in).
ISO 21049:2004 is also applicable to seal spare parts and can be referred to for the upgrading of existing equipment. A classification system for the seal configurations covered by ISO 21049:2004 into categories, types, arrangements and orientations is provided.

Life cycle

NOW

PUBLISHED
EN ISO 21049:2004
90.92 Standard to be revised
May 14, 2007

Relations

Adopted from ISO 21049:2004 IDENTICAL