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ASME B16.42 2021

$98.04

ASME B16.42 – 2021 Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300

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ASME 2021
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This Standard covers minimum requirements for Classes 150 and 300 cast ductile iron pipe flanges and flanged fittings. The requirements covered are as follows: (a) pressure-temperature ratings (b) sizes and method of designating openings of reducing fittings (c) marking (d) material (e) dimensions and tolerances (f) bolts, nuts, and gaskets (g) tests.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
6 FOREWORD
7 ASME B16 COMMITTEE ROSTER
8 CORRESPONDENCE WITH THE B16 COMMITTEE
10 ASME B16.42-2021 SUMMARY OF CHANGES
11 LIST OF CHANGES IN RECORD NUMBER ORDER
12 1 SCOPE
2 GENERAL
2.1 References
2.2 Quality Systems
2.3 Relevant Units
2.4 Service
2.5 Convention
2.6 Denotation
13 3 PRESSURE–TEMPERATURE RATINGS
3.1 General
3.2 Ratings of Flanged Joints
3.3 Rating Temperature
3.4 Temperature Considerations
3.5 Variances From Ratings
4 SIZE
4.1 Nominal Size
4.2 Reducing Fitting Sizes
14 4.3 Reducing Flange Sizes
5 MARKING
6 MATERIALS
6.1 Castings
6.2 Bolting
6.3 Gaskets
7 DIMENSIONS
7.1 Center to Contact Surface and Center to End
7.2 Facings
15 7.3 Flange Bolt Holes
7.4 Spot Facing
7.5 Reducing Flanges
7.6 Threads for Threaded Flanges
7.7 Stud Bolts, Bolts, and Nuts
16 7.8 Gaskets
7.9 Drains
8 TOLERANCES
8.1 Wall Thickness
8.2 Center to Contact Surface and Contact Surface to Contact Surface
8.3 Facings
8.4 Flange Thickness
8.5 Bore of Flanges
8.6 Drilling and Facing
9 TESTING
9.1 General
9.2 Flange Testing
9.3 Fitting Shell Tests
17 Tables
Table 3.1-1 Pressure–Temperature Ratings
Table 3.1-1C Pressure–Temperature Ratings
18 Figures
Figure 4.2-1 Method of Designating Outlets of Reducing Fittings
19 Table 7.1.1-1 Dimensions of Class 150 Elbows, Double Branch Elbows, Tees, Crosses, Laterals, True Ys (Straight Sizes), and Reducers
21 Table 7.1.1-2 Dimensions of Class 300 Elbows, Tees, Crosses, Laterals, True Ys (Straight Sizes), and Reducers
23 Table 7.1.4-1 Dimensions of Class 150 Base Elbows and Base Tees
24 Table 7.1.4-2 Dimensions of Class 300 Base Elbows and Base Tees
25 Table 7.3-1 Templates for Drilling Class 150 Ductile Iron Flanges
26 Table 7.3-2 Templates for Drilling Class 300 Ductile Iron Flanges
27 Table 7.4-1 Dimensions of Class 150 Ductile Iron Flanges
29 Table 7.4-2 Dimensions of Class 300 Ductile Iron Flanges
31 Table 7.5.2-1 Reducing Threaded Flanges for Classes 150 and 300
32 Figure 7.9.3-1 Method of Designating Location of Tapped Holes for Drains When Specified
33 MANDATORY APPENDIX I REFERENCES
34 NONMANDATORY APPENDIX A QUALITY SYSTEM PROGRAM
35 NONMANDATORY APPENDIX B METHODS FOR ESTABLISHING PRESSURE–TEMPERATURE RATINGS
B-1 GENERAL
B-2 RATINGS IN CUSTOMARY UNITS
ASME B16.42 2021
$98.04