Ductile Iron Pipe Flanges and Flanged Fittings

Classes 150 and 300

AN A MERICAN NA TIONAL S T AND ARD

ASME B16.42-2011

[Revision of ASME B16.42-1998 (R2006)]

ASME B16.42-2011

[Revision of ASME B16.42-1998 (R2006)]

Ductile Iron Pipe Flanges and Flanged Fittings

Classes 150 and 300

AN AMERICAN NA TIONAL S T AND ARD

Three Park Avenue • New York, NY • 10016 USA

Date of Issuance: November 28, 2011

The next edition of this Standard is scheduled for publication in 2016.

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Copyright © 2011 by

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CONTENTS

Foreword iv

Committee Roster v

Correspondence With the B16 Committee vi

Summary of Changes vii

1. Scope 1

2. General 1

3. Pressure–Temperature Ratings 1

4. Size 2

5. Marking 2

6. Materials 3

7. Dimensions 3

8. Tolerances 5

9. Testing 5

Figures

1. Method of Designating Outlets of Reducing Fittings 6

2. Method of Designating Location of Tapped Holes for Drains When Specified 7

Tables

1. Pressure–Temperature Ratings 8

2. Reducing Threaded Flanges for Classes 150 and 300 9

3. Dimensions of Class 150 Elbows, Double Branch Elbows, Tees, Crosses, Laterals,

   True Ys (Straight Sizes), and Reducers 10

4. Dimensions of Class 300 Elbows, Tees, Crosses, Laterals, True Ys (Straight Sizes),

   and Reducers 12

5. Dimensions of Class 150 Base Elbows and Base Tees 14

6. Dimensions of Class 300 Base Elbows and Base Tees 15

7. Dimensions of Class 150 Ductile Iron Flanges 16

8. Templates for Drilling Class 150 Ductile Iron Flanges 17

9. Dimensions of Class 300 Ductile Iron Flanges 18

10. Templates for Drilling Class 300 Ductile Iron Flanges 20

    I	Pressure–Temperature Ratings — Dimensions and Templates of Pipe Flanges
    	and Flanged Fittings in U.S. Customary Units ...................................	21
    II	References ........................................................................	35

    Mandatory Appendices

    Nonmandatory Appendices

    1. Quality System Program 36

    2. Methods for Establishing Pressure–Temperature Ratings 37

iii