Intro4u2u

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………………………………………………………………………………………………………