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WELDING NECK, SLIP-ON AND THREADED, ANSI B16.36
NOMINAL PIPE
SIZE |
OUTSIDE DIA. OF FLANGE O |
THICKNESS OF FLANGE MIN. C |
OUTSIDE DIA. OF RAISED FACE R |
LENGTH THROUGH HUB |
| SLIP-ON AND THREADED Y2 |
WELD NECK Y1 |
| 1 |
4.88 |
1.50 |
2.00 |
1.88 |
3.25 |
| 1.5 |
6.12 |
1.50 |
2.88 |
1.88 |
3.38 |
| 2 |
6.50 |
1.50 |
3.62 |
1.94 |
3.38 |
| 2.5 |
7.50 |
1.50 |
4.12 |
2.00 |
3.50 |
| 3 |
8.25 |
1.50 |
5.00 |
2.06 |
3.50 |
| 4 |
10.00 |
1.50 |
6.19 |
2.12 |
3.62 |
| 6 |
12.50 |
1.50 |
8.50 |
2.12 |
3.94 |
| 8 |
15.00 |
1.62 |
10.62 |
2.44 |
4.38 |
| 10 |
17.50 |
1.88 |
12.75 |
2.62 |
4.62 |
| 12 |
20.50 |
2.00 |
15.00 |
2.88 |
5.12 |
| 14 |
23.00 |
2.12 |
16.25 |
3.00 |
5.62 |
| 16 |
25.50 |
2.25 |
18.50 |
3.25 |
5.75 |
| 18 |
28.00 |
2.38 |
21.00 |
3.50 |
6.25 |
| 20 |
30.50 |
2.50 |
23.00 |
3.75 |
6.38 |
| 24 |
36.00 |
2.75 |
27.25 |
4.19 |
6.62 |
NOMINAL PIPE
SIZE |
DIA. OF HUB X |
HUB DIA. BEGINNING OF CHAMFER (W.N.) A |
DIA. OF COUNTERBORE |
| BACK QB |
FACE QF |
| 1 |
2.12 |
1.32 |
1.41 |
1.30 |
| 1.5 |
2.75 |
1.90 |
1.99 |
1.89 |
| 2 |
3.31 |
2.38 |
2.50 |
2.36 |
| 2.5 |
3.94 |
2.88 |
3.00 |
2.84 |
| 3 |
4.62 |
3.50 |
3.63 |
3.46 |
| 4 |
5.75 |
4.50 |
4.63 |
4.45 |
| 6 |
8.12 |
6.63 |
6.75 |
6.57 |
| 8 |
10.25 |
8.63 |
8.75 |
8.55 |
| 10 |
12.62 |
10.75 |
SEE NOTE (8) |
| 12 |
14.75 |
12.75 |
| 14 |
16.75 |
14.00 |
| 16 |
19.00 |
16.00 |
| 18 |
21.00 |
18.00 |
| 20 |
23.12 |
20.00 |
| 24 |
27.62 |
24.00 |
GENERAL NOTE: Dimensions are in inches.
NOTES:
(1) Other NPT sizes may be furnished if required.
(2) For slip-on and threaded flanges, verify that TT drilling extends to inside diameter
of pipe after assembly and is free from burrs.
(3) Weld neck flanges NPS 3 and smaller are identical to Class 600 flanges
and may be so marked.
(4) All other dimensions are in accordance with ASME/ANSI B16.5
ORIFICES FLANGES
CLASS 300
WELDING NECK, SLIP-ON AND THREADED, ANSI B16.36
Nominal
Size |
COUNTERBORE
(DEPTH FROM FACE) |
BORE |
DIA. OF
PRESSURE
CONNECTION
TT |
| - |
F |
G |
SLIP-ON
B2 |
WELD
NECK
B1 |
| 1 |
1.44 |
0.75 |
1.36 |
|
0.25 |
| 1.5 |
1.47 |
0.72 |
1.95 |
|
0.25 |
| 2 |
1.50 |
0.69 |
2.44 |
|
0.25 |
| 2.5 |
1.75 |
0.56 |
2.94 |
|
0.25 |
| 3 |
1.81 |
0.56 |
3.57 |
|
0.38 |
| 4 |
1.88 |
0.56 |
4.57 |
|
0.50 |
| 6 |
1.88 |
0.31 |
6.72 |
|
0.50 |
| 8 |
2.19 |
0.44 |
8.72 |
|
0.50 |
| 10 |
SEE NOTE (8) |
10.88 |
SEE
NOTE
(7) |
0.50 |
| 12 |
12.88 |
0.50 |
| 14 |
14.14 |
0.50 |
| 16 |
16.16 |
0.50 |
| 18 |
18.18 |
0.50 |
| 20 |
20.20 |
0.50 |
| 24 |
24.25 |
0.50 |
Nominal
Size |
DRILLING TEMPLATE |
BOLT LENGTH
[(5), (6)] |
| - |
BOLT
CIRCLE |
NO.
OF
HOLES |
DIA.
OF
HOLES |
DIA.
OF
BOLTS |
MACHINE BOLTS
|
STUD
BOLTS |
| 1 |
3.50 |
4 |
0.69 |
0.62 |
4.50 |
5.00 |
| 1.5 |
4.50 |
4 |
0.81 |
0.75 |
4.75 |
5.25 |
| 2 |
5.00 |
8 |
0.69 |
0.62 |
4.50 |
5.00 |
| 2.5 |
5.88 |
8 |
0.81 |
0.75 |
4.75 |
5.25 |
| 3 |
6.62 |
8 |
0.81 |
0.75 |
4.75 |
5.25 |
| 4 |
7.88 |
8 |
0.81 |
0.75 |
4.75 |
5.25 |
| 6 |
10.62 |
12 |
0.88 |
0.75 |
4.75 |
5.25 |
| 8 |
13.00 |
12 |
1.00 |
0.88 |
5.00 |
5.75 |
| 10 |
15.25 |
16 |
1.12 |
1.00 |
5.75 |
6.50 |
| 12 |
17.75 |
16 |
1.25 |
1.12 |
6.25 |
7.00 |
| 14 |
20.25 |
20 |
1.25 |
1.12 |
6.50 |
7.25 |
| 16 |
22.50 |
20 |
1.38 |
1.25 |
7.00 |
7.75 |
| 18 |
24.75 |
24 |
1.38 |
1.25 |
7.25 |
8.00 |
| 20 |
27.00 |
24 |
1.38 |
1.25 |
7.50 |
8.50 |
| 24 |
32.00 |
24 |
1.62 |
1.50 |
8.25 |
9.50 |
NOTES: (cont¡¯d)
(5) Bolt lengths include allowance for orifice and gasket thickness of 0.25 in. for
NPS 1-12 and 0.38 in. for NPS 14-24.
(6) In conformance with ASME/ANSI B16.5, stud bolt lengths do not include point heights.
(7) Bore diameter of weld neck flanges is to be specified by the purchaser.
(8) Threaded flanges are furnished in NPS 1-8 only.
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