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Technical Info : Flanges


Technical Info

Dimensions for Class 2500 Flanges

Nom. Pipe Size(inches)
O
Q*
R
X
No. of Holes
Dia of Bolt Holes
Bolt circle Dia
YY*
H
J
Y*
B
R
YV
BB
C
T
1/2 133.4 30.2 35.1 42.9 4 22.4 88.9 73.2 21.3 To Be Specified by purchaser 39.6 3.0 39.6 22.9 23.6 28.4 28.4
3/4 139.7 31.8 42.9 50.8 4 22.4 95.3 79.2 26.7 42.9 3.0 42.9 28.2 29.0 31.8  
1 158.8 35.1 50.8 57.2 4 25.4 108.0 88.9 33.5 47.8 3.0 47.8 35.1 35.8 35.1  
1 1/4 184.2 38.1 63.5 73.2 4 28.4 130.0 95.3 42.2 52.3 4.8 52.3 43.7 44.5 38.1  
1 1/2 203.2 44.5 73.2 79.2 4 31.8 146.1 111.3 48.3 60.5 6.4 60.5 50.0 50.5 44.5  
2 235.0 50.8 91.9 95.3 8 28.4 171.5 127.0 60.5 69.9 7.9 69.9 62.5 63.5 50.8  
21/2 266.7 57.2 104.6 114.3 8 31.8 196.9 142.7 73.2 79.2 7.9 79.2 75.4 76.2 57.2  
3 304.8 66.5 127.0 133.4 8 35.1 228.6 168.1 88.9 91.9 9.7 91.9 91.4 92.2 63.5  
4 355.6 76.2 157.2 165.1 8 41.1 273.1 190.5 114.3 108.0 11.2 108.0 116.8 117.6 69.9  
5 419.1 91.9 185.7 203.2 8 47.8 323.9 228.6 141.2 130.0 11.2 130.0 144.5 144.5 76.2  
6 482.6 108.0 215.9 235.0 8 53.8 368.3 273.1 168.4 152.4 12.7 152.4 171.5 171.5 82.6  
8 552.5 127.0 269.7 304.8 12 53.8 438.2 317.5 219.2 177.8 12.7 177.8 222.3 222.3 95.3  
10 673.1 165.1 323.9 374.7 12 66.5 539.8 419.1 273.1 228.6 12.7 228.6 277.4 276.4 108.0  
12 762.0 184.2 381.0 441.5 12 73.2 619.3 463.6 323.9 254.0 12.7 254.0 328.2 328.7 120.7