|
API Foreword ......................................................................................................................................................... ii
Foreword ................................................................................................................................................................ v
Introduction ........................................................................................................................................................... vi
1 Scope ......................................................................................................................................................... 1
2 Conformance ............................................................................................................................................. 1
2.1 Units of measurement ............................................................................................................................... 1
2.2 Rounding ................................................................................................................................................... 1
2.3 Compliance to standard ............................................................................................................................ 1
3 Normative references ............................................................................................................................... 2
4 Terms and definitions ............................................................................................................................... 4
5 Symbols and abbreviated terms .............................................................................................................. 7
5.1 Symbols ..................................................................................................................................................... 7
5.2 Abbreviated terms .................................................................................................................................... 7
6 Valve types and configurations ............................................................................................................... 8
6.1 Valve types ................................................................................................................................................ 8
6.2 Valve configurations ................................................................................................................................ 9
7 Design ...................................................................................................................................................... 23
7.1 Design standards and calculations ....................................................................................................... 23
7.2 Pressure and temperature rating ........................................................................................................... 24
7.3 Sizes ......................................................................................................................................................... 24
7.4 Face-to-face and end-to-end dimensions ............................................................................................. 25
7.5 Valve operation ....................................................................................................................................... 39
7.6 Pigging ..................................................................................................................................................... 40
7.7 Valve ends ............................................................................................................................................... 40
7.8 Pressure relief ......................................................................................................................................... 41
7.9 Bypasses, drains and vents ................................................................................................................... 42
7.10 Injection points ....................................................................................................................................... 42
7.11 Drain, vent and sealant lines .................................................................................................................. 42
7.12 Drain, vent and sealant valves ............................................................................................................... 43
7.13 Hand-wheels and wrenches — Levers .................................................................................................. 43
7.14 Locking devices ...................................................................................................................................... 43
7.15 Position of the obturator ......................................................................................................................... 43
7.16 Position indicators ................................................................................................................................. 43
7.17 Travel stops ............................................................................................................................................. 44
7.18 Actuator, operators and stem extensions ............................................................................................ 44
7.19 Lifting ....................................................................................................................................................... 44
7.20 Drive trains .............................................................................................................................................. 44
7.21 Stem retention ......................................................................................................................................... 45
7.22 Fire type-testing ...................................................................................................................................... 45
7.23 Anti-static device .................................................................................................................................... 45
7.24 Design documents ................................................................................................................................. 45
7.25 Design document review ........................................................................................................................ 45
8 Materials .................................................................................................................................................. 46
8.1 Material specification .............................................................................................................................. 46
8.2 Service compatibility ............................................................................................................................... 46
8.3 Forged parts ............................................................................................................................................ 46
8.4 Composition limits ................................................................................................................................. 46
8.5 Toughness test requirements ................................................................................................................ 47
8.6 Bolting ..................................................................................................................................................... 48
8.7 Sour service ............................................................................................................................................ 48
8.8 Vent and drain connections ................................................................................................................... 48
Copyright American Petroleum Institute
Provided by IHS under license with API
No reproduction or networking permitted without license from IHS Not for Resale
--`,,```,,,,````-`-`,,`,,`,`,,`---
9 Welding .................................................................................................................................................... 48
9.1 Qualifications .......................................................................................................................................... 48
9.2 Impact testing ......................................................................................................................................... 48
9.3 Hardness testing ..................................................................................................................................... 49
9.4 Repair ....................................................................................................................................................... 49
10 Quality control ........................................................................................................................................ 51
10.1 NDE requirements .................................................................................................................................. 51
10.2 Measuring and test equipment ............................................................................................................... 51
10.3 Qualification of inspection and test personnel .................................................................................... 51
10.4 NDE of repairs ......................................................................................................................................... 52
10.5 Weld end NDE ......................................................................................................................................... 52
10.6 Visual inspection of castings ................................................................................................................. 52
11 Pressure testing ..................................................................................................................................... 52
11.1 General .................................................................................................................................................... 52
11.2 Stem backseat test ................................................................................................................................. 53
11.3 Hydrostatic shell test .............................................................................................................................. 53
11.4 Hydrostatic seat test ............................................................................................................................... 54
11.5 Testing of drain, vent and sealant injection lines ................................................................................ 55
11.6 Draining ................................................................................................................................................... 55
12 Coating .................................................................................................................................................... 55
13 Marking .................................................................................................................................................... 56
14 Preparation for shipment ........................................................................................................................ 58
15 Documentation .........................................................................................................................................58
Annex A (normative) Requirements for non-destructive examination ........................................................... 59
Annex B (normative) Supplementary test requirements .................................................................................. 63
Annex C (informative) Supplementary documentation requirements ............................................................ 67
Annex D (informative) Purchasing guidelines ................................................................................................... 68
Annex E (informative) Marking example ............................................................................................................ 75
Annex F (informative) API Monogram ..................................................................................................................77
Bibliography ......................................................................................................................................................... 79 |
|