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ANSI Class 150

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

3.50

1.38

0.44

2.38

4

0.62

3.88

1.69

0.50

2.75

4

0.62

4.25

2.00

0.56

3.12

4

0.62

5.00

2.88

0.69

3.88

4

0.62

6.00

3.62

0.75

4.75

4

0.75

7.00

4.12

0.88

5.50

4

0.75

7.50

5.00

0.94

6.00

4

0.75

9.00

6.19

0.94

7.50

8

0.75

11.00

8.50

1.00

9.50

8

0.88

13.50

10.62

1.12

11.75

8

0.88

16.00

12.75

1.19

14.25

12

1.00

ANSI Class 300

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

3.75

1.38

0.56

2.62

4

0.62

4.62

1.69

0.62

3.25

4

0.75

4.88

2.00

0.69

3.50

4

0.75

6.12

2.88

0.81

4.50

4

0.88

6.50

3.62

0.88

5.00

8

0.75

7.50

4.12

1.00

5.88

8

0.88

8.25

5.00

1.12

6.62

8

0.88

10.00

6.19

1.25

7.88

8

0.88

12.50

8.50

1.44

10.62

12

0.88

15.00

10.62

1.62

13.00

12

1.00

17.50

12.75

1.88

15.25

16

1.12

ANSI Class 600

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

3.75

1.38

0.56

2.62

4

0.62

4.62

1.69

0.62

3.25

4

0.75

4.88

2.00

0.69

3.50

4

0.75

6.12

2.88

0.88

4.50

4

0.88

6.50

3.62

1.00

5.00

8

0.75

7.50

4.12

1.12

5.88

8

0.88

8.25

5.00

1.12

6.62

8

0.88

10.75

6.19

1.50

8.50

8

1.00

14.00

8.50

1.88

11.50

12

1.12

16.50

10.62

2.19

13.75

12

1.25

20.00

12.75

2.50

17.00

16

1.38

ANSI Class 900

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

4.75

1.38

0.88

3.25

4

0.88

5.12

1.69

1.00

3.50

4

0.88

5.88

2.00

1.12

4.00

4

1.00

7.00

2.88

1.25

4.88

4

1.12

8.50

3.62

1.50

6.50

8

1.00

9.62

4.12

1.62

7.50

8

1.12

9.50

5.00

1.50

7.50

8

1.12

11.50

6.19

1.75

9.25

8

1.25

15.00

8.50

2.19

12.50

12

1.25

18.50

10.62

2.50

15.50

12

1.50

21.50

12.75

2.75

18.50

16

1.50

ANSI Class 1500

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

4.75

1.38

0.88

3.25

4

0.88

5.12

1.69

1.00

3.50

4

0.88

5.88

2.00

1.12

4.00

4

1.00

7.00

2.88

1.25

4.88

4

1.12

8.50

3.62

1.50

6.50

8

1.00

9.62

4.12

1.62

7.50

8

1.12

10.50

5.00

1.88

8.00

8

1.25

12.50

6.19

2.12

9.50

8

1.38

15.50

8.50

3.25

12.50

12

1.50

19.00

10.62

3.62

15.50

12

1.75

23.00

12.75

4.25

19.00

12

2.00

ANSI Class 2500

Nominal Pipe Size

1/2

3/4

1

1 1/2

2

2 1/2

3

4

6

8

10

Flange Diameter

Raised Face Diameter

Flange thickness, min.

Bolt circle diameter

Number of bolts

Bolt hole diameter

5.25

1.38

1.19

3.50

4

0.88

5.50

1.69

1.25

3.75

4

0.88

6.25

2.00

1.38

4.25

4

1.00

8.00

2.88

1.75

5.75

4

1.25

9.25

3.62

2.00

6.75

8

1.12

10.50

4.12

2.25

7.75

8

1.25

12.00

5.00

2.62

9.00

8

1.38

14.00

6.19

3.00

10.75

8

1.62

19.00

8.50

4.25

14.50

8

2.12

21.75

10.62

5.00

17.25

12

2.12

26.50

12.75

6.50

21.25

12

2.62

Page 199

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