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Flange Guide

Dimensions Orifice Weld Neck RTJ flanges ASME B16.36 Class 1500

Weld Neck Orifice flange - Ring Type Joint

Other Pressure Classes

1500
NPS OUT
SIDE
DIA
MIN
THK
FLG
HGT
FLG
GRV
NO
PITCH
DIA
GRV
DEPTH
O T H P E
1 150 38.1 83 R16 50.80 6.35
180 38.1 89 R20 68.27 6.35
2 215 38.1 102 R24 95.25 7.92
245 41.3 105 R27 107.95 7.92
3 265 47.7 117 R35 136.53 7.92
4 310 54.0 124 R39 161.93 7.92
6 395 82.6 171 R46 211.14 9.52
8 485 92.1 213 R50 269.88 11.13
10 585 108.0 254 R54 323.85 11.13
12 675 123.9 283 R58 381.00 14.27
14 750 133.4 298 R63 419.10 15.88
16 825 146.1 311 R67 469.90 17.48
18 915 162.0 327 R71 533.40 17.48
20 985 177.8 356 R75 584.20 17.48
24 1170 203.2 406 R79 692.15 20.62
NPS O T H GRV
NO
P E
OUT
SIDE
DIA
MIN
THK
FLG
HGT
FLG
PITCH
DIA
GRV
DEPTH
Weld Neck Orifice flange - Ring Type Joint
NPS GRV
WIDTH
R
BTM
HGT
OVAL
RING
HUB
DIA
HUB
DIA
DIA OF
TAP
F R W X A Tg
1 8.74 0.8 25.4 52 33.5 6.4
8.74 0.8 25.4 70 48.3 6.4
2 11.91 0.8 27.0 105 60.3 6.4
11.91 0.8 27.0 124 73.0 6.4
3 11.91 0.8 27.0 133 88.9 9.5
4 11.91 0.8 27.0 162 114.3 12.7
6 13.49 1.5 28.6 229 168.3 12.7
8 16.66 1.5 33.3 292 219.1 12.7
10 16.66 1.5 33.3 368 273.0 12.7
12 23.01 1.5 39.7 451 323.8 12.7
14 26.97 2.4 44.4 495 355.6 12.7
16 30.18 2.4 50.8 552 406.4 12.7
18 30.18 2.4 50.8 597 457.2 12.7
20 33.32 2.4 54.0 641 508.0 12.7
24 36.53 2.4 58.7 762 609.6 12.7
NPS F R W X A Tg
GRV
WIDTH
R
BTM
HGT
OVAL
RING
HUB
DIA
HUB
DIA
DIA OF
TAP
Weld Neck Orifice flange - Ring Type Joint
NPS BOLT
CIRCLE
NO OF
BOLTS
DIA OF
HOLES
DIA
STUD
BOLTS
STUD
BOLT
L
1 101.6 4 1 7/8 160
123.8 4 1.1/8 1 165
2 165.1 8 1 7/8 165
190.5 8 1.1/8 1 180
3 203.2 8 1.1/8 185
4 241.3 8 1.3/8 215
6 317.5 12 1.3/8 280
8 393.7 12 1.5/8 310
10 482.6 12 2 1.7/8 355
12 571.6 16 2.1/8 2 400
14 635.0 16 2 3/8 445
16 704.8 16 2 5/8 485
18 774.7 16 2 7/8 535
20 831.8 16 3.1/8 3 570
24 990.6 16 3.5/8 660
NPS BOLT
CIRCLE
NO OF
BOLTS
DIA OF
HOLES
DIA
STUD
BOLTS
STUD
BOLT
L

GENERAL NOTES:

Notes:

Measuring lengths of Stud Bolts and Hex bolts

Tolerances
Tolerances on all dimensions shall be as shown in ASME B16.5 except for those shown below.

Pressure Tap Location
Tolerance on location of center of pressure tap hole from flange face shall be:

Bore Diameter

PP
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