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Dimensions Orifice Flanges RTJ

Dimensions Orifice Weld Neck RTJ flanges ASME B16.36 Class 600
Table Header
NPS
OUT SIDE DIA
MIN THK FLG
HGT FLG
GRV NO
PITCH DIA
GRV DEPTH
O
T
H
P
E
1
125
36.6
81
R16
50.80
6.35
1½
155
36.6
84
R20
68.27
6.35
2
165
36.6
84
R23
82.55
7.92
2½
190
36.6
87
R26
101.60
7.92
3
210
36.6
87
R31
123.83
7.92
4
275
38.1
102
R37
149.23
7.92
6
355
47.7
117
R45
211.12
7.92
8
420
55.6
133
R49
269.88
7.92
10
510
63.5
152
R53
323.85
7.92
12
560
66.7
156
R57
381.00
7.92
14
605
69.9
165
R61
419.10
7.92
16
685
76.2
178
R65
469.90
7.92
18
745
82.6
184
R69
533.40
7.92
20
815
88.9
190
R73
584.20
9.53
24
940
101.6
203
R77
692.15
11.13
NPS
O
T
H
GRV NO
P
E
OUT SIDE DIA
MIN THK FLG
HGT FLG
PITCH DIA
GRV DEPTH
STUD BOLT LENGTH
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
54
33.5
6.4
1½
8.74
0.8
25.4
70
48.3
6.4
2
11.91
0.8
27.0
84
60.3
6.4
2½
11.91
0.8
27.0
100
73.0
6.4
3
11.91
0.8
27.0
117
88.9
9.5
4
11.91
0.8
27.0
152
114.3
12.7
6
11.91
0.8
27.0
222
168.3
12.7
8
11.91
0.8
27.0
273
219.1
12.7
10
11.91
0.8
27.0
343
273.0
12.7
12
11.91
0.8
27.0
400
323.8
12.7
14
11.91
0.8
27.0
432
355.6
12.7
16
11.91
0.8
30.2
495
406.4
12.7
18
11.91
0.8
30.2
546
457.2
12.7
20
13.49
1.5
31.8
610
508.0
12.7
24
16.66
1.5
36.5
718
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
NPS BOLT CIRCLE NO OF BOLTS DIA OF HOLES DIA STUD BOLTS STUD BOLT LENGTH
1
88.9
4
3/4
5/8
140
1½
114.3
4
7/8
3/4
140
2
127.0
8
3/4
5/8
140
2½
149.2
8
7/8
3/4
145
3
168.3
8
7/8
3/4
145
4
215.9
8
1
7/8
165
6
292.1
12
1.1/8
1
190
8
349.2
12
1¼
1.1/8
210
10
431.8
16
1.3/8
1¼
235
12
489.0
20
1.3/8
1¼
240
14
527.0
20
1½
1.3/8
255
16
603.2
20
1.5/8
1½
275
18
654.0
20
1.3/4
1.5/8
290
20
723.9
24
1.3/4
1.5/8
320
24
838.2
24
2
1.7/8
350
NPS
BOLT CIRCLE
NO OF BOLTS
DIA OF HOLES
DIA STUD BOLTS
STUD BOLT LENGTH
Table Header
NPS
OUT SIDE DIA
MIN THK FLG
HGT FLG
GRV NO
PITCH DIA
GRV DEPTH
O
T
H
P
E
1
125
36.6
81
R16
50.80
6.35
1½
155
36.6
84
R20
68.27
6.35
2
165
36.6
84
R23
82.55
7.92
2½
190
36.6
87
R26
101.60
7.92
3
240
38.1
102
R31
123.83
7.92
4
290
44.5
114
R37
149.23
7.92
6
380
55.6
140
R45
211.12
7.92
8
470
63.5
162
R49
269.88
7.92
10
545
69.9
184
R53
323.85
7.92
12
610
79.4
200
R57
381.00
7.92
14
640
85.8
213
R62
419.10
11.13
16
705
88.9
216
R66
469.90
11.13
18
785
101.6
229
R70
533.40
12.70
20
855
108.0
248
R74
584.20
12.70
24
1040
139.7
292
R78
692.15
15.88
NPS
O
T
H
GRV NO
P
E
OUT SIDE DIA
MIN THK FLG
HGT FLG
PITCH DIA
GRV DEPTH
STUD BOLT LENGTH
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
54
33.5
6.4
1½
8.74
0.8
25.4
70
48.3
6.4
2
11.91
0.8
27.0
84
60.3
6.4
2½
11.91
0.8
27.0
100
73.0
6.4
3
11.91
0.8
27.0
127
88.9
9.5
4
11.91
0.8
27.0
159
114.3
12.7
6
11.91
0.8
27.0
235
168.3
12.7
8
11.91
0.8
27.0
298
219.1
12.7
10
11.91
0.8
27.0
368
273.0
12.7
12
11.91
0.8
27.0
419
323.8
12.7
14
16.66
1.5
33.3
451
355.6
12.7
16
16.66
1.5
36.5
508
406.4
12.7
18
19.84
1.5
39.7
565
457.2
12.7
20
19.84
1.5
39.7
622
508.0
12.7
24
26.97
2.4
47.6
749
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
NPS BOLT CIRCLE NO OF BOLTS DIA OF HOLES DIA STUD BOLTS STUD BOLT LENGTH
1
88.9
4
3/4
5/8
140
1½
114.3
4
7/8
3/4
140
2
127.0
8
3/4
5/8
140
2½
149.2
8
7/8
3/4
145
3
190.5
8
1
7/8
165
4
235.0
8
1¼
1.1/8
190
6
317.5
12
1¼
1.1/8
210
8
393.7
12
1½
13/8
240
10
469.9
16
1½
13/8
255
12
533.4
20
1½
13/8
275
14
558.8
20
1.5/8
1½
290
16
616.0
20
1.3/4
1.5/8
305
18
685.8
20
2
17/8
350
20
749.3
20
2.1/8
2
375
24
901.7
20
25/8
2½
470
NPS
BOLT CIRCLE
NO OF BOLTS
DIA OF HOLES
DIA STUD BOLTS
STUD BOLT LENGTH
Table Header
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
1½
180
38.1
89
R20
68.27
6.35
2
215
38.1
102
R24
95.25
7.92
2½
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
STUD BOLT LENGTH
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
1½
8.74
0.8
25.4
70
48.3
6.4
2
11.91
0.8
27.0
105
60.3
6.4
2½
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
NPS BOLT CIRCLE NO OF BOLTS DIA OF HOLES DIA STUD BOLTS STUD BOLT LENGTH
1
101.6
4
1
7/8
160
1½
123.8
4
1.1/8
1
165
2
165.1
8
1
7/8
165
2½
190.5
8
1.1/8
1
180
3
203.2
8
1¼
1.1/8
185
4
241.3
8
1.3/8
1¼
215
6
317.5
12
1½
1.3/8
280
8
393.7
12
1.3/4
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
2¼
445
16
704.8
16
2 5/8
2½
485
18
774.7
16
2 7/8
2.3/4
535
20
831.8
16
3.1/8
3
570
24
990.6
16
3.5/8
3½
660
NPS
BOLT CIRCLE
NO OF BOLTS
DIA OF HOLES
DIA STUD BOLTS
STUD BOLT LENGTH
Table Header
NPS
OUT SIDE DIA
MIN THK FLG
HGT FLG
GRV NO
PITCH DIA
GRV DEPTH
O
T
H
P
E
1
160
38.1
92
R18
60.33
6.35
1½
205
44.5
111
R23
82.55
7.92
2
235
50.8
127
R26
101.60
7.92
2½
265
57.2
143
R28
111.13
9.53
3
305
66.7
168
R32
127.00
9.53
4
355
76.2
190
R38
157.18
11.13
6
485
108.0
273
R47
228.60
12.70
8
550
127.0
318
R51
279.40
14.27
10
675
165.1
419
R55
342.90
17.48
12
760
184.2
464
R60
406.40
17.48
NPS
O
T
H
GRV NO
P
E
OUT SIDE DIA
MIN THK FLG
HGT FLG
PITCH DIA
GRV DEPTH
STUD BOLT LENGTH
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
57
33.5
6.4
1½
11.91
0.8
27.0
79
48.3
6.4
2
11.91
0.8
27.0
95
60.3
6.4
2½
13.49
1.5
30.2
114
73.0
6.4
3
13.49
1.5
30.2
133
88.9
9.5
4
16.66
1.5
33.3
165
114.3
12.7
6
19.84
1.5
36.5
235
168.3
12.7
8
23.01
1.5
39.7
305
219.1
12.7
10
30.18
2.4
47.6
375
273.0
12.7
12
33.32
2.4
50.8
441
323.8
12.7
NPS
F
R
W
X
A
Tg
GRV WIDTH
R BTM
HGT OVAL RING
HUB DIA
HUB DIA
DIA OF TAP
NPS BOLT CIRCLE NO OF BOLTS DIA OF HOLES DIA STUD BOLTS STUD BOLT LENGTH
1
108.0
4
1
7/8
160
1½
146.0
4
1¼
1.1/8
190
2
171.4
8
1.1/8
1
195
2½
196.8
8
1¼
1.1/8
215
3
228.6
8
1.3/8
1¼
240
4
273.0
8
1.5/8
1½
275
6
368.3
8
2.1/8
2
370
8
438.2
12
2.1/8
2
405
10
539.8
12
2 5/8
2½
515
12
619.1
12
2 7/8
2.3/4
570
NPS
BOLT CIRCLE
NO OF BOLTS
DIA OF HOLES
DIA STUD BOLTS
STUD BOLT LENGTH

General Notes:

  • Dimensions are in millimeters, except for bolts and bolt holes.
  • All other dimensions are in accordance with ASME B16.5.
  • Ring joint flanges larger than NPS 3 will require angular meter taps.

Notes:

  • Other NPT sizes may be furnished if required.
  • Bolt lengths for raised face flanges include allowance for orifice and gasket thickness of 6 mm (0.25 in.) for NPS 1 to NPS 12. Bolt lengths for ring-type joint flanges include allowance of 15 mm (0.62 in.) for NPS 1 to NPS 3.
  • Bore (B) is to be specified by the purchaser.
  • The length of the Stud Bolt does not include the height of the chamfers (points).

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:
  • ±0.5 mm (±0.02 in.) for flanges smaller than NPS 4
  • ±0.8 mm (±0.03 in.) for flanges NPS 4 and larger

BORE DIAMETER

  • Bore diameter tolerance (Welding Neck flanges only) is ±0.5% of nominal value.

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