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API STD 685-2011


API Std 685

Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service, Second Edition
Edition: 2nd
American Petroleum Institute / 01-Feb-2011 / 186 pages
1.1 This standard specifies the minimum requirements for sealless centrifugal pumps for use in petroleum, heavy duty petrochemical and gas industry services. Refer to Annex A for application information. Notes following a clause are informative.
1.2 This standard is applicable to single stage overhung pumps of two classifications, Magnetic Drive Pumps (MDP) and Canned Motor Pumps (CMP). Sections 2 through 8 and Section 10 cover requirements applicable to both classifications. Section 9 is divided into two subsections and covers requirements unique to each classification.

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