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Orifice Flanges

 
Orifice Welding Neck Flages
 
  300#
Nominal
Pipe
Size
Inches
O.D.
Raised
Face
R
Outside
Diam.
O
Thickness
Min.
C
Length
thru
Hub
Y
Diam.
at Base
of Hub
X
Diam.
Hub at
Bevel
A
Diam.
Connection
TT
Bolt
Circle
Diam.
Number
of
Holes
Diam
of
Holes
Jack
Screw
sizes
RF
Jack
Screw
Length
Jack
Screw
sizes
RTJ
Jack
Screw
Length
1" 50.8 124 38.1 82.6 53.9 33.6 6.4 88.9 4 17.6 5/8 2.¾ 5/8 3.¾
1.½” 73.2 155.5 38.1 85.9 69.9 48.3 6.4 114.3 4 20.6 5/8 2.¾ 5/8 3.¾
2" 92 165.1 38.1 85.9 84.1 60.5 6.4 127 8 17.6 5/8 2.¾ 5/8 3.¾
2.½” 104.7 190.5 38.1 88.9 100.1 73.2 6.4 149.3 8 20.6 5/8 2.¾ ¾ 3.¾
3" 127 209.6 38.1 88.9 117.4 88.9 9.6 168.2 8 20.6 ¾ 2.¾ ¾ 3.¾
4" 157.2 254 38.1 92 146.1 114.3 12.7 200.2 8 20.6 ¾ 2.¾ ¾ 3.¾
6" 215.9 317.5 38.1 100.1 206.3 168.4 12.7 269.8 12 22.4 ¾ 2.¾ ¾ 4
8" 269.8 381 41.2 111.3 260.4 219.2 12.7 330.2 12 25.4 ¾ 3 ¾ 4.1/4
10" 323.9 444.5 47.8 117.4 320.6 273.1 12.7 387.4 16 28.5 1 3.½ 1 4.½
12" 381 520.7 50.8 130.1 374.7 323.9 12.7 450.9 16 31.8 1 3.½ 1 4.½
14" 412.8 584.2 53.9 142.8 425.5 355.6 12.7 514.4 20 31.8 1 3.½ 1 5
16" 469.9 647.7 57.2 146.1 482.6 406.4 12.7 571.5 20 35.1 1 3.½ 1 5
18" 533.4 711.2 60.5 158.8 533.4 457.2 12.7 628.7 24 35.1 1 3.¾ 1 5
20" 584.2 774.7 63.5 162.1 587.3 508 12.7 685.8 24 35.1 1 3.¾ 1 5.½
24" 692.2 914.4 69.9 168.2 701.6 609.6 12.7 812.8 24 41.2 1 4 1 5.½
Note : Raised Face are included in flange thickness
Diameter B to be specified
All dimensions are in mm
   
   600#
Nominal
Pipe
Size
Inches
O.D.
Raised
Face
R
Outside
Diam.
O
Thickness
Min.
C
RF Height Length
thru
Hub
Y
Diam.
at Base
of Hub
X
Diam.
Hub at
Bevel
A
Diam.
Connection
TT
Bolt
Circle
Diam.
Number
of
Holes
Diam
of
Holes
Jack
Screw
sizes
RF
Jack
Screw
Length
Jack
Screw
sizes
RTJ
Jack
Screw
Length
1" 50.8 124 36.6 6.4 81.1 53.9 33.6 6.4 88.9 4 17.6 5/8 2.¾ 5/8 3.¾
1.½” 73.2 155.5 36.6 6.4 84.4 69.9 48.3 6.4 114.3 4 20.6 5/8 2.¾ 5/8 3.¾
2" 92 165.1 36.6 6.4 84.4 84.1 60.5 6.4 127 8 17.6 5/8 2.¾ 5/8 3.¾
2.½” 104.7 190.5 36.6 6.4 87.4 100.1 73.2 6.4 149.3 8 20.6 ¾ 2.¾ ¾ 3.¾
3" 127 209.6 36.6 6.4 87.4 117.4 88.9 9.6 168.2 8 20.6 ¾ 2.¾ ¾ 3.¾
4" 157.2 273.1 38.1 6.4 101.6 152.4 114.3 12.7 215.9 8 25.4 ¾ 3.1/4 ¾ 4
6" 215.9 355.6 47.8 6.4 117.4 222.3 168.4 12.7 292.1 12 28.5 7/8 4 7/8 4.½
8" 269.8 419.1 55.7 6.4 133.4 273.1 219.2 12.7 349.3 12 31.8 7/8 4 7/8 5
10" 323.9 508 63.5 6.4 152.4 342.9 273.1 12.7 431.8 16 35.1 7/8 4.½ 7/8 5
12" 381 558.8 66.6 6.4 155.5 400.1 323.9 12.7 489 20 35.1 7/8 4.½ 7/8 5.½
14" 412.8 603.3 69.9 6.4 165.1 431.8 355.6 12.7 527.1 20 38.1        
16" 469.9 685.8 76.2 6.4 177.8 495.3 406.4 12.7 603.3 20 41.2        
18" 533.4 743 82.6 6.4 184.2 546.1 457.2 12.7 654.1 20 44.5        
20" 584.2 812.8 88.9 6.4 190.5 609.6 508 12.7 723.9 24 44.5        
24" 692.2 939.8 101.6 6.4 203.2 717.6 609.6 12.7 838.2 24 50.8        
All dimensions are in mm
   
   900#
Nominal
Pipe
Size
Inches
O.D.
Raised
Face
R
Outside
Diam.
O
Thickness
Min.
C
RF Height Length
thru
Hub
Y
Diam.
at Base
of Hub
X
Diam.
Hub at
Bevel
A
Diam.
Connection
TT
Bolt
Circle
Diam.
Number
of
Holes
Diam
of
Holes
Jack
Screw
sizes
RF
Jack
Screw
Length
Jack
Screw
sizes
RTJ
Jack
Screw
Length
1" 50.8 149.4 38.1 6.4 82.6 52.4 33.6 6.4 101.6 4 25.4 5/8 3.1/4 5/8 3.¾
1.½” 73.2 177.8 38.1 6.4 88.9 69.9 48.3 6.4 124 4 28.5 5/8 3.1/4 5/8 3.¾
2" 92 215.9 38.1 6.4 101.6 104.7 60.5 6.4 165.1 8 25.4 5/8 3.1/4 5/8 1/4
2.½” 104.7 244.4 41.2 6.4 104.7 124 73.2 6.4 190.5 8 28.5 1/5 3.½ 5/8 4.1/4
3" 127 241.3 38.1 6.4 101.6 127 88.9 9.6 190.5 8 25.4 ¾ 3.1/4 ¾ 1/4
4" 157.2 292.1 44.5 6.4 114.3 158.8 114.3 12.7 235 8 31.8 ¾ 3.½ ¾ 4.1/4
6" 215.9 381 55.7 6.4 139.7 235 168.4 12.7 317.5 12 31.8 1 4 1 5
8" 269.8 469.9 63.5 6.4 162.1 298.5 219.2 12.7 393.7 12 38.1 1 4 1 5
10" 323.9 546.1 69.9 6.4 184.2 368.3 273.1 12.7 469.9 16 38.1 1 4.½ 1 5.½
12" 381 609.6 79.3 6.4 200.2 419.1 323.9 12.7 533.4 20 38.1 1 4.½ 1 6
14" 412.8 641.4 85.9 6.4 212.9 450.9 355.6 12.7 558.8 20 41.2        
16" 469.9 704.9 88.9 6.4 215.9 508 406.4 12.7 616 20 44.5        
18" 533.4 787.4 101.6 6.4 228.6 565.2 457.2 12.7 685.8 20 50.8        
20" 584.2 857.3 108 6.4 247.7 622.3 508 12.7 749.3 20 53.9        
24" 692.2 1041.4 139.7 6.4 292.1 749.3   12.7 901.7 20 66.6        
All dimensions are in mm
   
 1500#
Nominal
Pipe
Size
Inches
O.D.
Raised
Face
R
Outside
Diam.
O
Thickness
Min.
C
RF Height Length
thru
Hub
Y
Diam.
at Base
of Hub
X
Diam.
Hub at
Bevel
A
Diam.
Connection
TT
Bolt
Circle
Diam.
Number
of
Holes
Diam
of
Holes
Jack
Screw
sizes
RF
Jack
Screw
Length
Jack
Screw
sizes
RTJ
Jack
Screw
Length
1" 50.8 149.4 38.1 6.4 82.6 52.4 33.6 6.4 101.6 4 25.4 5/8 3.1/4 5/8 3.¾
1.½” 73.2 177.8 38.1 6.4 88.9 69.9 48.3 6.4 124 4 28.5 5/8 3.1/4 5/8 3.¾
2" 92 215.9 38.1 6.4 101.6 104.7 60.5 6.4 165.1 8 25.4 5/8 3.1/4 5/8 4
2.½” 104.7 244.4 41.2 6.4 104.7 124 73.2 6.4 190.5 8 28.5 5/8 3.½ 5/8 4.1/4
3" 127 266.7 47.8 6.4 117.4 133.4 88.9 9.6 203.2 8 31.8 3/4 3.¾ ¾ 4.½
4" 157.2 311.2 53.9 6.4 124 162.1 114.3 12.7 241.3 8 35.1 3/4 4 ¾ 5
6" 215.9 393.7 82.6 6.4 171.5 228.6 168.4 12.7 317.5 12 38.1 1 5 1 6
8" 269.8 482.6 92 6.4 212.9 292.1 219.2 12.7 393.7 12 44.5 1 5.½ 1 7
10" 323.9 584.2 108 6.4 254 368.3 273.1 12.7 482.6 12 50.8 1 6 1 7
12" 381 673.1 124 6.4 282.5 450.9 323.9 12.7 571.5 16 53.9 1 7 1 8
14" 412.8 749.3 133.4 6.4 298.5 495.3 355.6 12.7 635 16 60.5        
16" 469.9 825.5 146.1 6.4 311.2 552.5 406.4 12.7 704.9 16 66.6        
18" 533.4 914.4 162.1 6.4 327.2 596.9 457.2 12.7 774.7 16 73.2        
20" 584.2 984.3 177.8 6.4 355.6 641.4 508 12.7 831.9 16 79.3        
24" 692.2 1168.4 203.2 6.4 406.4 762 609.6 12.7 990.6 16 92        
All dimensions are in mm
   
 2500#
Nominal
Pipe
Size
Inches
O.D.
Raised
Face
R
Outside
Diam.
O
Thickness
Min.
C
RF Height Length
thru
Hub
Y
Diam.
at Base
of Hub
X
Diam.
Hub at
Bevel
A
Diam.
Connection
TT
Bolt
Circle
Diam.
Number
of
Holes
Diam
of
Holes
1" 50.8 158.8 38.1 6.4 92 57.2 33.6 6.4 108 4 25.4
1.1/2 73.2 203.2 44.5 6.4 111.3 79.3 48.3 6.4 146.1 4 31.8
2" 92 235 50.8 6.4 127 95.3 60.5 6.4 171.5 8 28.5
2.1/2 104.7 266.7 57.2 6.4 142.8 114.3 73.2 6.4 196.9 8 31.8
3" 127 304.8 66.6 6.4 168.2 133.4 88.9 9.6 228.6 8 35.1
4" 157.2 355.6 76.2 6.4 190.5 165.1 114.3 12.7 273.1 8 41.2
6" 215.9 482.6 108 6.4 273.1 235 168.4 12.7 368.3 8 53.9
8" 269.8 552.5 127 6.4 317.5 304.8 219.2 12.7 438.2 12 53.9
10" 323.9 673.1 165.1 6.4 419.1 374.7 273.1 12.7 539.8 12 66.6
12" 381 762 184.2 6.4 463.6 441.5 323.9 12.7 619.3 12 73.2
All dimensions are in mm
   
* There will may be typical error  
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