Dimensions of Class 1500 RF Orifice WN Flanges

Expired

Dimensions of Class 1500 RF Orifice WN Flanges as per ASME B16.36.
Nominal Pipe Size, Diameter of Bolt Hole and Diameter of Stud Bolts are specified in inches.
All other dimensions are in "mm" unless noted otherwise.

Dimensions of Orifice WN Flanges

NPS
inch		 OD
of
Flange
(O)		 Dia
of
Raised
Face
(R)		 Min
Thk
of
Flange
(T)		 Weld
Neck
Length
(Y)		 Hub
Dia
at
Base
(X)		 Hub
Dia
at
End
(A)		 Weld
Neck
Bore
(B)		 Dia
of
Tap
(Tt)

Bolt
Circle

 No.
of
Bolt
Holes		 Dia
of
Bolt
Holes		 Dia
of
Bolts		 Stud
Bolt
Length
1 150 50.8 38.1 83 52 33.5 (1) 6.4 101.6 4 1 7/8 150
1-1/2 180 73 38.1 89 70 48.3 (1) 6.4 123.8 4 1-1/8 1 160
2 215 92.1 38.1 102 105 60.3 (1) 6.4 165.1 8 1 7/8 150
2-1/2 245 104.8 41.3 105 124 73 (1) 6.4 190.5 8 1-1/8 1 165
3 265 127 47.7 117 133 88.9 (1) 9.5 203.2 8 1-1/4 1-1/8 185
4 310 157.2 54 124 162 114.3 (1) 12.7 241.3 8 1-3/8 1-1/4 205
6 395 215.9 82.6 171 229 168.3 (1) 12.7 317.5 12 1-1/2 1-3/8 265
8 485 269.9 92.1 213 292 219.1 (1) 12.7 393.7 12 1-3/4 1-5/8 300
10 585 323.8 108 254 368 273 (1) 12.7 482.6 12 2 1-7/8 345
12 675 381 123.9 283 451 323.8 (1) 12.7 571.6 16 2-1/8 2 380
14 750 412.8 133.4 298 495 355.6 (1) 12.7 635 16 2-3/8 2-1/4 415
16 825 469.9 146.1 311 552 406.4 (1) 12.7 704.8 16 2-5/8 2-1/2 450
18 915 533.4 162 327 597 457.2 (1) 12.7 774.7 16 2-7/8 2-3/4 500
20 985 584.2 177.8 356 641 508 (1) 12.7 831.8 16 3-1/8 3 545
24 1170 692.2 203.2 406 762 609.6 (1) 12.7 990.6 16 3-5/8 3-1/2 620

Note - (1) : Bore diameter of Orfice Flange (B) shall be specified by Purchaser.

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