Contents
1Scope.....................................................................................................................................1
2 Normative references.............................................................................................................. 1

3 Terms and definitions........................................................................................................... 3
4 Symbols and abbreviations................................................................................................. 6
4.1Symbols................................................................................................................. 6
4.2 Abbreviations...................................................................................................................... 6
5 Valve types and configurations.......................................................................... 7
5.1 Valve types.............................................................................................. 7
5.2 Valve configurations............................................................................... 7
6 Design.................................................................................................................. 19
6.1 Pressure and temperature rating...................................................................... 19
6.2 Sizes..................................................................................................... 20
6.3 Face-to-face and end-to-end dimensions................................... 20
6.4 Minimum-bore full-opening valves........................................................................... 33
6.5 Valve operation.......................................................................................... 33
6.6 Pigging................................................................................................. 33
6.7 Valve ends......................................................................... 34
6.8 Pressure relief.............................................................................................. 34
6.9 Bypass, drain and vent connections......................................................................... 34
6.10 Hand wheels and wrenches (levers)................................................ 35
6.11 Locking devices................................................................... 35

6.12 Position indicators................................................................... 35
6.13 Operators and stem extensions.............................................................. 36
6.14 Sealant injection.......................................................................... 36
6.15 Lifting lugs ................................................................................................ 36
6.16 Actuators................................................................................... 36
6.17 Drive trains......................................................................................... 36
6.18 Stem retention ................................................................................. 37
6.19 Fire safety........................................................................................ 37
6.20 Anti-static device..................................................................................................... 37
6.21 Design documents .................................................................................................... 37
6.22 Design document review........................................................................................ 37
7 Materials....................................................................................................................... 37
7.1 Material specification...................................................................................................... 37
7.2 Service compatibility ................................................................................. 37
7.3 Forged parts ................................................................................................................... 38
7.4 Welding ends............................................................................................................ 38
7.5 Toughness test requirements........................................................................... 38
7.6 Bolting ......................................................................................................................... 39
7.7 Sour service....................................................................................................................... 39
8 Welding .......................................................................................................... 39
8.1 Qualifications....................................................................................................... 39
8.2 Impact testing............................................................................................................... 39
8.3 Hardness testing ............................................................................................ 40
9 Quality control ...................................................................................................... 41
9.1 General .......................................................................................................... 41
9.2 Measuring and test equipment ................................................................................... 42
9.3 Qualification of inspection and test personnel .................................................................. 42
9.4 NDE of repair welding................................................................................ 42
10 Pressure testing ........................................................................................ 43
10.1 General ................................................................................................... 43

10.2 Stem backseat test........................................................................................ 43
10.3 Hydrostatic shell test .......................................................................................... 44
10.4 Hydrostatic seat test .............................................................................................. 44
10.5 Draining............................................................................................................... 46
11 Marking.................................................................................................................. 46
11.1 Requirements............................................................................................................... 46
11.2 Marking example ............................................................................................................ 49
12 Storage and shipping............................................................................................................ 50
12.1 Painting .................................................................................................................. 50
12.2 Corrosion prevention..................................................................................................... 50
12.3 Openings.......................................................................................................... 50
13 Documentation ................................................................................................ 50
Annex A (informative) Purchasing guidelines................................................................... 51
Annex B (normative) Supplementary NDE requirements .................................................. 53
Annex C (normative) Supplementary test requirements ....................................................... 57
Annex D (normative) Supplementary documentation requirements...................................... 61
Annex E (informative) API Monogram.....................................................................................................................

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