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Flange Guide

Dimensions Ring-Joint Facings ASME B16.5 Pressure Class 150

Ring-Joint Facing
Class
150
NPS
Groove
No.
Pitch
Dia
P
Depth
E
Note (1)
Width
F
Radius
at bottom
R
R11 34.14 5.54 7.14 0.8
R12 39.67 6.35 8.74 0.8
R13 42.88 6.35 8.74 0.8
R14 44.45 6.35 8.74 0.8
1 R15 47.63 6.35 8.74 0.8
R16 50.8 6.35 8.74 0.8
1.1/4 R17 57.15 6.35 8.74 0.8
R18 60.33 6.35 8.74 0.8
1.1/2 R19 65.07 6.35 8.74 0.8
R20 68.27 6.35 8.74 0.8
R21 72.23 7.92 11.91 0.8
2 R22 82.55 6.35 8.74 0.8
R23 82.55 7.92 11.91 0.8
R24 95.25 7.92 11.91 0.8
2.1/2 R25 101.6 6.35 8.74 0.8
R26 101.6 7.92 11.91 0.8
R27 107.95 7.92 11.91 0.8
R28 111.13 9.53 13.49 1.5
3 R29 114.3 6.35 8.74 0.8
R30 117.48 7.92 11.91 0.8
R31 123.83 7.92 11.91 0.8
R32 127 9.53 13.49 1.5
3.1/2 R33 131.78 6.35 8.74 0.8
R34 131.78 7.92 11.91 0.8
R35 136.53 7.92 11.91 0.8
4 R36 149.23 6.35 8.74 0.8
R37 149.23 7.92 11.91 0.8
R38 157.18 11.13 16.66 1.5
R39 161.93 7.92 11.91 0.8
5 R40 171.45 6.35 8.74 0.8
R41 180.98 7.92 11.91 0.8
R42 190.5 12.7 19.84 1.5
6 R43 193.68 6.35 8.74 0.8
R44 193.68 7.92 11.91 0.8
Class
150
NPS
Groove
No.
Pitch
Dia
P
Depth
E
Note (1)
Width
F
Radius
at bottom
R
R45 211.12 7.92 11.91 0.8
R46 211.14 9.53 13.49 1.5
R47 228.6 12.7 19.84 1.5
8 R48 247.65 6.35 8.74 0.8
R49 269.88 7.92 11.91 0.8
R50 269.88 11.13 16.66 1.5
R51 279.4 14.27 23.01 1.5
10 R52 304.8 6.35 8.74 0.8
R53 323.85 7.92 11.91 0.8
R54 323.85 11.13 16.66 1.5
R55 342.9 17.48 30.18 2.4
12 R56 381 6.35 8.74 0.8
R57 381 7.92 11.91 0.8
R58 381 14.27 23.01 1.5
14 R59 396.88 6.35 8.74 0.8
R60 406.4 17.48 33.32 2.4
R61 419.1 7.92 11.91 0.8
R62 419.1 11.13 16.66 1.5
R63 419.1 15.88 26.97 2.4
16 R64 454.03 6.35 8.74 0.8
R65 469.9 7.92 11.91 0.8
R66 469.9 11.13 16.66 1.5
R67 469.9 17.48 30.18 2.4
18 R68 517.53 6.35 8.74 0.8
R69 533.4 7.92 11.91 0.8
R70 533.4 12.7 19.84 1.5
R71 533.4 17.48 30.18 2.4
20 R72 558.8 6.35 8.74 0.8
R73 584.2 9.53 13.49 1.5
R74 584.2 12.7 19.84 1.5
R75 584.2 17.48 33.32 2.4
24 R76 673.1 6.35 8.74 0.8
R77 692.15 11.13 16.66 1.5
R78 692.15 15.88 26.97 2.4
R79 692.15 20.62 36.53 2.4
Class
150
NPS
Groove
No.
Pitch
Dia
P
Depth
E
Note (1)
Width
F
Radius
at bottom
R

NOTES:
(1) The height of the raised portion is equal to the depth of the groove dimension, E, but is not subjected to the tolerances for E. Former full-face contour may be used.
(2) For ring joints with lapped flanges in Classes 300 and 600, ring and groove number R30 is used instead of R31.

Ring-Joint Facing
Diameter of Raised Portion, K
CL150
NPS
CL300
NPS
CL400
NPS
CL600
NPS
CL900
NPS
CL1500
NPS
CL2500
NPS
51 51 60.5 65
1/2 1/2 1/2 1/2
63.5 63.5 66.5 73
3/4 3/4 3/4 3/4
63.5 70 70 71.5 82.5
1 1 1 1 1
73 79.5 79.5 81 102
1.1/4 1.1/4 1.1/4 1.1/4 1.1/4
82.5 90.5 90.5 92 114
1.1/2 1.1/2 1.1/2 1.1/2 1.1/2
102 108 108 124 133
2 2 2 2 2
121 127 127 137 149
2.1/2 2.1/2 2.1/2 2.1/2 2.1/2
133 146 146 156 168 168
3 3 3 3 3 3
154 159 159
3.1/2 3.1/2 3.1/2
171 175 175 175 181 194 203
4 4 4 4 4 4 4
194 210 210 210 216 229 241
5 5 5 5 5 5 5
219 241 241 241 241 248 279
6 6 6 6 6 6 6
273 302 302 302 308 318 340
8 8 8 8 8 8 8
330 356 356 356 362 371 425
10 10 10 10 10 10 10
406 413 413 413 419 438 495
12 12 12 12 12 12 12
425 457 457 457 467 489
14 14 14 14 14 14
483 508 508 508 524 546
16 16 16 16 16 16
546 575 575 575 594 613
18 18 18 18 18 18
597 635 635 635 648 673
20 20 20 20 20 20
711 749 749 749 772 794
24 24 24 24 24 24
CL150
NPS
CL300
NPS
CL400
NPS
CL600
NPS
CL900
NPS
CL1500
NPS
CL2500
NPS
Diameter of Raised Portion, K
Ring-Joint Facing
Approximate Distance Between Flanges, X
CL150
NPS
CL300
NPS
CL400
NPS
CL600
NPS
CL900
NPS
CL1500
NPS
CL2500
NPS
3
1/2
3
1/2
4
1/2
4
1/2
4
3/4
4
3/4
4
3/4
4
3/4
4
1
4
1
4
1
4
1
4
1
4
1.1/4
4
1.1/4
4
1.1/4
4
1.1/4
3
1.1/4
4
1.1/2
4
1.1/2
4
1.1/2
4
1.1/2
3
1.1/2
4
2
6
2
5
2
3
2
3
2
4
2.1/2
6
2.1/2
5
2.1/2
3
2.1/2
3
2.1/2
4
3
6
3
5
3
4
3
3
3
3
3
4
3.1/2
6
3.1/2
5
3.1/2
4
4
6
4
6
4
5
4
4
4
3
4
4
4
4
5
6
5
6
5
5
5
4
5
3
5
4
5
4
6
6
6
6
6
5
6
4
6
3
6
4
6
4
8
6
8
6
8
5
8
4
8
4
8
5
8
4
10
6
10
6
10
5
10
4
10
4
10
6
10
4
12
6
12
6
12
5
12
4
12
5
12
8
12
3
14
6
14
6
14
5
14
4
14
6
14
3
16
6
16
6
16
5
16
4
16
8
16
3
18
6
18
6
18
5
18
5
18
8
18
3
20
6
20
6
20
5
20
5
20
10
20
3
24
6
24
6
24
6
24
6
24
11
24
CL150
NPS
CL300
NPS
CL400
NPS
CL600
NPS
CL900
NPS
CL1500
NPS
CL2500
NPS
Approximate Distance Between Flanges, X

GENERAL NOTES:
(a) Dimensions are in millimeters unless otherwise indicated.
(b) Use Class 600 sizes NPS 1/2 to NPS 3.1/2 for Class 400.
(c) Use Class 1500 in sizes NPS 1/2 to NPS 2.1/2 for Class 900.
(d) Ring joint gasket materials shall conform to ASME B16.20.
(e) The edge (periphery) of each ring joint flange shall be marked with the letter R and the corresponding ring groove number.

NOTES:
(1) The height of the raised portion is equal to the depth of the groove dimension, E, but is not subjected to the tolerances for E. Former full-face contour may be used.
(2) For ring joints with lapped flanges in Classes 300 and 600, ring and groove number R30 is used instead of R31.

TOLERANCES:
E (depth) +0.4 -0.0, F (width) ±0.2, P (pitch diameter) ±0.13, R (radius at bottom)≤ 2 + 0.8 -0.0, > 2 ± 0.8,
23° (angle) ± 1/2°

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