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API 681 : 1996

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

LIQUID RING VACUUM PUMPS AND COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
Available format(s)

Hardcopy , PDF

Superseded date

02-20-2021

Language(s)

English

Published date

01-01-2010

Section 1 - General
1.1 Scope
1.2 Alternative designs
1.3 Conflicting requirements
1.4 Definition of terms
1.5 References
1.6 Unit conversion
Section 2 - Basic design
2.1 General
2.2 Casings
2.3 Casing connections
2.4 External forces and moments
2.5 Rotating elements
2.6 Mechanical shaft seals
2.7 Dynamics
2.8 Bearings, bearing housings, and lubrication
2.9 Materials
2.10 Nameplate and rotation arrows
Section 3 - System design
3.1 Ring liquid system
3.2 Controls and instrumentation
3.3 Drivers and transmissions
3.4 Couplings and guards
3.5 Belt drives
3.6 Mounting plates
3.7 Piping
3.8 Special tools
Section 4 - Inspection, testing, and preparation for
      shipment
4.1 General
4.2 Inspection
4.3 Testing
4.4 Preparation for shipment
Section 5 - Vendor's data
5.1 General
5.2 Proposals
5.3 Contract data
Appendix A - Liquid ring vacuum pump and compressor
             system data sheets
Appendix B - Liquid ring vacuum pump schematic
Appendix C - Shaft deflection schematic
Appendix D - Liquid ring vacuum pump ring liquid flow
             schematics
Appendix E - Mechanical seal and piping arrangement
             schematics
Appendix F - Material list
Appendix G - Liquid ring vacuum pumps and compressors
             vendor drawing and data requirements
Appendix H - System considerations, operating variables,
             and test performance conversion

Gives the minimum requirements for liquid ring vacuum pump and compressor systems for service in the petroleum, chemical, and gas industries.

DocumentType
Standard
Pages
80
ProductNote
Reconfirmed 1996
PublisherName
American Petroleum Institute
Status
Superseded
SupersededBy

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