ISO 7121:2016
Current
The latest, up-to-date edition.
Steel ball valves for general-purpose industrial applications
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English
07-04-2016
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ISO 7121:2016 specifies the requirements for a series of steel ball valves suitable for general-purpose industrial applications.
It covers valves of the nominal sizes
- DN 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, and 600 (NPS 1/4, 3/8, 1/2, 3/4, 1, 11/4, 11/2, 2, 21/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24),
and is applicable to the following pressure designations:
- PN 10; 16; 25; 40; 63; 100;
- Class 150; 300; 600; 800; 900.
NOTE Valve characteristics are not necessarily available in all nominal sizes for all pressure designations. For example, Class 800 applies only for valves with threaded end and socket weld ends up to DN 65 (NPS 21/2) and Class 900 applies only for reduced bore body seat openings.
It includes provisions for valve characteristics as follows:
- flanged and butt-welded ends in sizes 15 DN 600 (1/2 NPS 24);
- socket welding ends in sizes 8 DN 100 (1/4 NPS 4);
- threaded ends in sizes 8 DN 50 (1/4 NPS 2);
- body seat openings designated as full bore, reduced bore and double reduced bore;
- materials;
- testing and inspection.
| DevelopmentNote |
Supersedes ISO/DIS 7121. (04/2016)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS ISO 7121:2016 | Identical |
| NEN ISO 7121 : 2016 | Identical |
| NBN E 29 318 : 1989 | Identical |
| NFE 29 470 : 1989 | Similar to |
| UNE-EN ISO 28921-2:2018 | Industrial valves - Isolating valves for low-temperature applications - Part 2: Type testing (ISO 28921-2:2015) |
| EN ISO 28921-2:2017 | Industrial valves - Isolating valves for low-temperature applications - Part 2: Type testing (ISO 28921-2:2015) |
| 14/30293296 DC : 0 | BS ISO 28921-2 - INDUSTRIAL VALVES - ISOLATING VALVES FOR LOW TEMPERATURE APPLICATIONS - PART 2: TYPE TESTING |
| BS ISO 10631:2013 | Metallic butterfly valves for general purposes |
| BS EN ISO 28921-2:2017 | Industrial valves. Isolating valves for low-temperature applications Type testing |
| I.S. EN ISO 28921-2:2017 | INDUSTRIAL VALVES - ISOLATING VALVES FOR LOW-TEMPERATURE APPLICATIONS - PART 2: TYPE TESTING (ISO 28921-2:2015) |
| DIN EN ISO 17292:2016-05 | METAL BALL VALVES FOR PETROLEUM, PETROCHEMICAL AND ALLIED INDUSTRIES (ISO 17292:2015) |
| ISO 17292:2015 | Metal ball valves for petroleum, petrochemical and allied industries |
| I.S. EN ISO 17292:2015 | METAL BALL VALVES FOR PETROLEUM, PETROCHEMICAL AND ALLIED INDUSTRIES (ISO 17292:2015) |
| BS 2080:1989 | Specification for face-to-face, centre-to-face, end-to-end and centre-to-end dimensions of valves |
| 12/30236280 DC : 0 | BS ISO 10631 - METALLIC BUTTERFLY VALVES FOR GENERAL PURPOSES |
| BS ISO 28921-2 : 2015 | INDUSTRIAL VALVES - ISOLATING VALVES FOR LOW-TEMPERATURE APPLICATIONS - PART 2: TYPE TESTING |
| DIN EN ISO 28921-2:2017-05 | INDUSTRIAL VALVES - ISOLATING VALVES FOR LOW-TEMPERATURE APPLICATIONS - PART 2: TYPE TESTING (ISO 28921-2:2015) |
| UNE-EN ISO 17292:2016 | Metal ball valves for petroleum, petrochemical and allied industries (ISO 17292:2015) |
| BS EN ISO 17292:2015 | Metal ball valves for petroleum, petrochemical and allied industries |
| ISO 28921-2:2015 | Industrial valves Isolating valves for low-temperature applications Part 2: Type testing |
| EN ISO 17292:2015 | Metal ball valves for petroleum, petrochemical and allied industries (ISO 17292:2015) |
| 14/30299749 DC : 0 | BS EN ISO 17292 - METAL BALL VALVES FOR PETROLEUM, PETROCHEMICAL AND ALLIED INDUSTRIES |
| ISO 10631:2013 | Metallic butterfly valves for general purposes |
| EN 12982:2009 | Industrial valves - End-to-end and centre-to-end dimensions for butt welding end valves |
| EN 10269:2013 | Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties |
| ISO 17292:2015 | Metal ball valves for petroleum, petrochemical and allied industries |
| EN 1515-1:1999 | Flanges and their joints - Bolting - Part 1: Selection of bolting |
| ISO 4034:2012 | Hexagon regular nuts (style 1) Product grade C |
| ISO 14313:2007 | Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves |
| ASME B16.10 : 2017 | FACE-TO-FACE AND END-TO-END DIMENSIONS OF VALVES |
| ASME B16.11 : 2016 | FORGED FITTINGS, SOCKET-WELDING AND THREADED |
| ISO 965-2:1998 | ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality |
| ASME B36.10 : 1979 | WELDED AND SEAMLESS WROUGHT STEEL PIPE |
| ISO 5209:1977 | General purpose industrial valves Marking |
| ISO 7-2:2000 | Pipe threads where pressure-tight joints are made on the threads Part 2: Verification by means of limit gauges |
| ISO 6708:1995 | Pipework components Definition and selection of DN (nominal size) |
| ISO 4032:2012 | Hexagon regular nuts (style 1) — Product grades A and B |
| ASME B16.20 : 2012 | METALLIC GASKETS FOR PIPE FLANGES |
| ASME B1.20.1 : 2013(R2018) | PIPE THREADS, GENERAL PURPOSE (INCH) |
| ISO 7-1:1994 | Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation |
| API 608 : 2012 | METAL BALL VALVES - FLANGED, THREADED, AND WELDING ENDS |
| ISO 5752:1982 | Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensions |
| ISO 4200:1991 | Plain end steel tubes, welded and seamless — General tables of dimensions and masses per unit length |
| EN 1333:2006 | Flanges and their joints - Pipework components - Definition and selection of PN |
| ASME B16.5 : 2017 | PIPE FLANGES AND FLANGED FITTINGS: NPS 1/2 THROUGH NPS 24 METRIC/INCH STANDARD |
| ASME B16.34 : 2017 | VALVES - FLANGED, THREADED, AND WELDING END |
| ISO 4033:2012 | Hexagon high nuts (style 2) — Product grades A and B |
| ISO 261:1998 | ISO general purpose metric screw threads — General plan |
| MSS SP 55 : 2011 | QUALITY STANDARD FOR STEEL CASTINGS FOR VALVES, FLANGES, FITTINGS, AND OTHER PIPING COMPONENTS - VISUAL METHOD FOR EVALUATION OF SURFACE IRREGULARITIES |
| ISO 10497:2010 | Testing of valves — Fire type-testing requirements |
| ASME B18.2.2 : 2015 | NUTS FOR GENERAL APPLICATIONS: MACHINE SCREW NUTS, HEX, SQUARE, HEX FLANGE, AND COUPLING NUTS (INCH SERIES) |
| ISO 228-1:2000 | Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation |
| ASME B16.25 : 2012 | BUTTWELDING ENDS |
| ISO 5211:2017 | Industrial valves — Part-turn actuator attachments |
| ISO 5208:2015 | Industrial valves Pressure testing of metallic valves |
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