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ANSI Standard B16.5 Class 300 Plate Flanges Bore 0.88-24.25 in

ANSI Standard B16.5 Class 300 Plate Flanges Bore 0.88-24.25 in

All dimensions are in inches. Pipe Flanges and Flanged fittings: 1/2″ through 24″ NPS. This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Raised Face Flanges (EO): EO...

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  • All dimensions are in inches.


Pipe Flanges and Flanged fittings: 1/2″ through 24″ NPS.

This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings.


Raised Face Flanges (EO):

EO flanges seal with a flat gasket designed for installation between the raised faces of two mating flanges (both with raised faces). The raised faces have a prescribed texture to increase their gripping and retaining force on this flat gasket. Some users of raised face flanges specify the use of spiral wound gaskets.

 

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ANSI B16.5 Class 300 Plate Flanges

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Raised Face Diameter (R)

Length Thru Hub (Y)

Hub Diameter (X)

Bore (B)

Approximate Weight (lbs)

Bolt Circle (C)

Number of Holes

Diameter of Holes

 1/2

3.75

0.56

1.38

0.88

1.5

0.88

2

2.63

4

0.63

 3/4

4.63

0.63

1.69

1

1.88

1.09

3

3.25

4

0.75

1

4.88

0.69

2

1.06

2.13

1.36

3

3.5

4

0.75

1 1/4

5.25

0.75

2.5

1.06

2.5

1.7

4

3.88

4

0.75

1 1/2

6.13

0.81

2.88

1.19

2.75

1.95

6

4.5

4

0.88

2

6.5

0.88

3.63

1.31

3.31

2.44

7

5

8

0.75

2 1/2

7.5

1

4.13

1.5

3.94

2.94

10

5.88

8

0.88

3

8.25

1.13

5

1.69

4.63

3.57

13

6.63

8

0.88

3 1/2

9

1.19

5.5

1.75

5.25

4.07

17

7.25

8

0.88

4

10

1.25

6.19

1.88

5.75

4.57

22

7.88

8

0.88

5

11

1.38

7.31

2

7

5.66

28

9.25

8

0.88

6

12.5

1.44

8.5

2.06

8.13

6.72

39

10.63

12

0.88

8

15

1.63

10.63

2.44

10.25

8.72

58

13

12

1

10

17.5

1.88

12.75

2.62

12.63

10.88

81

15.25

16

1.13

12

20.5

2

15

2.88

14.75

12.88

115

17.75

16

1.25

14

23

2.13

16.25

3

16.75

14.14

165

20.25

20

1.25

16

25.5

2.25

18.5

3.25

19

16.16

190

22.5

20

1.38

18

28

2.38

21

3.5

21

18.18

250

24.75

24

1.38

20

30.5

2.5

23

3.75

23.13

20.2

315

27

24

1.38

22

33

2.63

25.25

4

25.25

22.22

370

29.25

24

1.63

24

36

2.75

27.25

4.19

27.63

24.25

475

32

24

1.63

 


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