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API STD 671

4th Edition, August 2007

Complete Document

Special-Purpose Couplings for Petroleum, Chemical, and Gas Industry Services

Includes all amendments and changes through Reaffirmation Notice , September 2010


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Active, Most Current

EN
Additional Comments:
C67104 * ISO 10441:2007 ADOPTION
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Referenced Items:

AGMA 9000
AGMA 9002
AGMA 9003
API RP 684

Product Details:

  • Revision: 4th Edition, August 2007
  • Published Date: September 2010
  • Status: Active, Most Current
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 66
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

This International Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines in special-purpose applications in the petroleum, petrochemical and natural gas industries. Such applications are typically in large and/or high speed machines, in services that can be required to operate continuously for extended periods, are often unspared and are critical to the continued operation of the installation. By agreement, it can be used for other applications or services.

Couplings covered by this International Standard are designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing unacceptable mechanical loading on the coupled machines. It is applicable to gear, metallic flexible element, quill shaft and torsionally resilient type couplings. Torsional damping and resilient type couplings are detailed in Annex A; gear-type couplings are detailed in Annex B and quill shaft style couplings are detailed in Annex C.

This International Standard covers the design, materials of construction, manufacturing quality, inspection and testing of special-purpose couplings.

This International Standard does not define criteria for the selection of coupling types for specific applications.

This International Standard is not applicable to other types of couplings, such as clutch, hydraulic, eddy-current, rigid, radial spline, chain and bellows types.