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API - STD 685

Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service

active, Most Current
Organization: API
Publication Date: 1 July 2022
Status: active
Page Count: 197
scope:

This standard covers the minimum requirements for sealless centrifugal pumps for use in petroleum, heavy-duty petrochemical, and gas industry services. Refer to Annex O for application information. Notes following a clause are informative.

This standard is applicable to single-stage overhung pumps of two classifications, magnetic drive pumps (MDPs) and canned motor pumps (CMPs). 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.

NOTE Extension of applicability to other designs such as multistage will need additional input and agreement between the purchaser and the supplier. Considerations for multistage sealless pumps are given in Annex Q.

If application of sealless pumps is indicated, relevant industry operating experience suggests that sealless pumps produced to this standard should be considered for pumping liquids at conditions exceeding any of the following:

- discharge pressure 1900 kPa (275 psig);

- suction pressure 500 kPa (75 psig);

- pumping temperature 150 °C (300 °F);

- rated total head 120 m (400 ft).

NOTE For sealed pumps, refer to API 610.

Document History

STD 685
July 1, 2022
Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service
This standard covers the minimum requirements for sealless centrifugal pumps for use in petroleum, heavy-duty petrochemical, and gas industry services. Refer to Annex O for application information....
February 1, 2011
Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service
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....
October 1, 2000
Sealless Centrifugal Pumps for Petroleum, Heavy Duty Chemical, and Gas Industry Services Downstream Segment
1 Scope This standard covers the minimum requirements for sealless centrifugal pumps for use in petroleum, heavy duty chemical and gas industry services. Refer to Appendix U for application...
October 1, 2000
Sealless Centrifugal Pumps for Petroleum, Heavy Duty Chemical, and Gas Industry Services
This standard covers the minimum requirements for sealless centrifugal pumps for use in petroleum, heavy duty chemical and gas industry services. Refer to Appendix U for application information....

References

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