Class 150 Flanges

Flanges

NOM PIPE SIZE CLASS 300*
OD C X A Y Y1 B B1 R D RF BOLT CIRCLE DIA. BOLT HOLE QTY/DIA
1/2 3.75 0.56 1.50 0.84 0.88 2.06 0.88 0.90 0.12 0.38 1.38 2.62 4/0.62
3/4 4.62 0.62 1.88 1.05 1.00 2.25 1.09 1.11 0.12 0.44 1.69 3.25 4/0.75
1 4.88 0.69 2.12 1.32 1.06 2.44 1.36 1.38 0.12 0.50 2.00 3.50 4/0.75
1 1/4 5.25 0.75 2.50 1.66 1.06 2.56 1.70 1.72 0.19 0.56 2.50 3.88 4/0.75
1 1/2 6.12 0.81 2.75 1.90 1.19 2.69 1.95 1.97 0.25 0.62 2.88 4.50 4/0.88
2 6.50 0.88 3.31 2.38 1.31 2.75 2.44 2.46 0.31 0.69 3.62 5.00 8/0.75
2 1/2 7.50 1.00 3.94 2.88 1.50 3.00 2.94 2.97 0.31 0.75 4.12 5.88 8/0.88
3 8.25 1.12 4.62 3.50 1.69 3.12 3.57 3.60 0.38 0.81 5.00 6.62 8/0.88
4 10.00 1.25 5.75 4.50 1.88 3.38 4.57 4.60 0.44 0.94*** 6.19 7.88 8/0.88
5 11.00 1.38 7.00 5.56 2.00 3.88 5.66 5.69 0.44 0.94*** 7.31 9.25 8/0.88
6 12.50 1.44 8.12 6.63 2.06 3.88 6.72 6.75 0.50 1.06*** 8.50 10.62 12/0.88
8 15.00 1.62 10.25 8.63 2.44 4.38 8.72 8.75 0.50 1.25*** 10.62 13.00 12/1.00
10 17.50 1.88 12.62 10.75 2.62** 4.62 10.88 10.92 0.50 1.31*** 12.75 15.25 16/1.12
12 20.50 2.00 14.75 12.75 2.88** 5.12 12.88 12.92 0.50 1.56*** 15.00 17.75 16/1.25
14 23.00 2.12 16.75 14.00 3.00** 5.62 14.14 14.18 0.50 1.63*** 16.25 20.25 20/1.25
16 25.50 2.25 19.00 16.00 3.25** 5.75 16.16 16.19 0.50 1.75*** 18.50 22.50 20/1.38
18 28.00 2.38 21.00 18.00 3.50** 6.25 18.18 18.20 0.50 1.94*** 21.00 24.75 24/1.38
20 30.50 2.50 23.12 20.00 3.75** 6.38 20.20 20.25 0.50 2.12*** 23.00 27.00 24/1.38
24 36.00 2.75 27.62 24.00 4.19** 6.62 24.25 24.25 0.50 2.50*** 27.25 32.00 24/1.62

ALL DIMENSIONS ARE IN INCHES
* IN ACCORDANCE WITH ASME/ANSI B16.5
** NOT APPLICABLE TO LAP JOINTS

LAP JOINT LENGTH= 10 - 3.75
12 - 4.00
14 - 4.38
16 - 4.75
18 - 5.12
20 - 5.50
24 - 6.00

*** INDUSTRY PRACTICE
****BORE OF WN & SW TO BE SPECIFIED, SEE PAGES 10 AND 11

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