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4

9.00

0.938

5.312

4.57

1.312

7.50

3.75

0.750

8

13

5

10.00

0.938

6.438

5.66

1.438

8.50

4.00

0.875

8

14

6

11.00

1.000

7.562

6.72

1.562

9.50

4.00

0.875

8

17

8

13.50

1.125

9.688

8.72

1.750

11.75

4.50

0.875

8

28

10

16.00

1.188

12.000

10.88

1.938

14.25

5.00

1.000

12

37

12

19.00

1.250

14.375

12.88

2.188

17.00

5.00

1.000

12

59

14

21.00

1.375

15.750

14.19

2.250

18.75

5.50

1.125

12

78

16

23.50

1.438

18.000

16.19

2.500

21.25

5.75

1.125

16

101

18

25.00

1.562

19.875

18.19

2.688

22.75

6.00

1.250

16

110

20

27.50

1.688

22.000

20.19

2.875

25.00

6.50

1.250

20

139

22

29.50

1.812

24.000

22.19

3.125

27.25

6.75

1.375

20

162

24

32.00

1.875

26.125

24.19

3.250

29.50

7.00

1.375

20

197

26

34.25

2.000

28.500

26.19

3.375

31.75

7.25

1.375

24

235

28

36.50

2.062

30.750

28.19

3.438

34.00

7.50

1.375

28

269

30

38.75

2.125

32.750

30.19

3.500

36.00

7.75

1.375

28

303

32

41.75

2.250

35.000

32.19

3.625

38.50

8.50

1.625

28

375

34

43.75

2.312

37.000

34.19

3.688

40.50

8.50

1.625

32

401

36

46.00

2.375

39.250

36.19

3.750

42.75

8.75

1.625

32

452

38

48.75

2.375

41.750

38.19

3.750

45.25

8.75

1.625

32

528

40

50.75

2.500

43.750

40.19

3.875

47.25

9.00

1.625

36

573

42

53.00

2.625

46.000

42.19

4.000

49.50

9.25

1.625

36

648

44

55.25

2.625

48.000

44.19

4.000

51.75

9.25

1.625

40

688

46

57.25

2.688

50.000

46.19

4.062

53.75

9.25

1.625

40

733

48

59.50

2.750

52.250

48.19

4.125

56.00

9.50

1.625

44

799

50

61.75

2.750

54.250

50.19

4.125

58.25

10.00

1.875

44

827

52

64.00

2.875

56.500

52.19

4.250

60.50

10.25

1.875

44

922

54

66.25

3.000

58.750

54.19

4.375

62.75

10.50

1.875

44

1024

60

73.00

3.125

65.250

60.19

4.500

69.25

11.00

1.875

52

1253

66

80.00

3.375

71.500

66.19

4.875

76.00

11.50

1.875

52

1623

72

86.50

3.500

78.500

72.19

5.000

82.50

11.75

1.875

60

1922

78

93.00

3.875

84.500

78.19

5.375

89.00

13.00

2.125

64

2279

84

99.75

3.875

90.500

84.19

5.375

95.50

13.00

2.125

64

2586

90

106.50

4.250

96.750

90.19

5.750

102.00

14.25

2.438

68

3061

96

113.25

4.250

102.750

96.19

5.750

108.50

14.25

2.438

68

3432

Notes: 
Commonly referred to as a class 150# in larger diameter.  Can be furnished with a raised face.  *Pressure ratings from AWWA table 4 Class E.  Pressure rating at atmopheric temperature is 275 psi.  These flanges have the same OD and drilling as ANSI/ASME B16.1 class 125 cast-iron flanges.  In sizes 24 in. and smaller, they also match ANSI/ASME B16.5 150-psi standard for steel flanges.