Special purpose couplings specification launched for review

JIP33 has issued “S-700 special purpose couplings” for public review. The consultation period runs for four weeks and will close on October 30th.

The purpose of this specification is to define a minimum common set of specification requirements for the procurement of Special Purpose Couplings in accordance with API 671 4th Ed. 2010 – Special Purpose Couplings for Petroleum, Chemical and Gas Industry Services and co-publication (an identical adoption of ISO 10441 2nd Ed. 2007 – Petroleum, petrochemical and natural gas industries – Flexible couplings for mechanical power transmission – Special-purpose applications) for application in the petroleum and natural gas industries.

The procurement specification follows a common document structure comprising four documents, which together with the purchase order define the overall technical specification for procurement.

It has been developed in consultation with a broad user and supplier base to realize benefits from standardization and achieve significant project and schedule cost reductions.

The files are available to download at

Updates and future specifications will be announced via the project’s mailing list and Twitter profile.

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