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API STD 671

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

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Organization: API
Publication Date: 1 August 2020
Status: active
Page Count: 103
scope:

This 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 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 B, gear-type couplings are detailed in Annex C, and quill-shaft type couplings are detailed in Annex D.

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

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

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

Document History

API STD 671
August 1, 2020
Special-purpose Couplings for Petroleum, Chemical, and Gas Industry Services
This 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...
August 1, 2007
Special-Purpose Couplings for Petroleum, Chemical, and Gas Industry Services
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,...
August 1, 2007
Special-Purpose Couplings for Petroleum, Chemical, and Gas Industry Services
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,...
October 1, 1998
Special-Purpose Couplings for Petroleum, Chemical, and Gas Industry Services
1.1 SCOPE 1.1.1 This standard covers the minimum requirements for special-purpose couplings that transmit power between the rotating shafts of two pieces of equipment in the petroleum, chemical, and...
January 1, 1990
Special-Purpose Couplings for Refinery Service
A description is not available for this item.
January 1, 1984
Special-Purpose Couplings For Refinery Services
A description is not available for this item.
December 1, 1979
Special-Purpose Couplings For Refinery Services
A description is not available for this item.

References

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