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Welding Neck Orifice Class 2500 Flanges

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  Welding Neck Orifice Class 2500  
     

Drilling Ring Type Joint
Nom  Size OD Thickness OD of RF Dia at Base Dia Bevel LTH Dia of Pressure Connection Bolt Circle Hole Dia # of holes Bolt Dia Grove # Pitch Dia Groove Depth Groove Width Rad at Bottom Spec Oval RH
O C R X A Y TT P E F r max W
in 1 6.25 1.5 2 2.25 1.32 3.62  1/4 4.25 1 4  7/8 R18 2.375 0.25 0.344 0.03 1
mm 158.8 38.1 50.8 57.2 33.5 91.9 6.4 108 25.4 22.2 60.325 6.35 8.738 0.8 25.4
in 1 1/2 8 1.75 2.88 3.12 1.9 4.38  1/4 5.75 1.25 4 1 1/8 R23 3.25 0.312 0.469 0.03 1.06
mm 203.2 44.5 73.2 79.2 48.3 111.3 6.4 146.1 31.8 28.6 82.55 7.925 11.913 0.8 26.9
in 2 9.25 2 3.62 3.75 2.38 5  1/4 6.75 1.12 8 1    R26 4 0.312 0.469 0.03 1.06
mm 235 50.8 91.9 95.3 60.5 127 6.4 171.5 28.4 25.4 101.6 7.925 11.913 0.8 26.9
in 2 1/2 10.5 2.25 4.12 4.5 2.88 5.62  1/4 7.75 1.25 8 1 1/8 R28 4.375 0.375 0.531 0.06 1.19
mm 266.7 57.2 104.6 114.3 73.2 142.7 6.4 196.9 31.8 28.6 111.125 9.525 13.487 1.5 30.2
in 3 12 2.62 5 5.25 3.5 6.62  3/8 9 1.38 8 1 1/4 R32 5 0.375 0.531 0.06 1.19
mm 304.8 66.5 127 133.4 88.9 168.1 9.5 228.6 35.1 31.8 127 9.525 13.487 1.5 30.2
in 4    14 3 6.19 6.5 4.5 7.5  1/2 10.75 1.62 8 1 1/2
mm 355.6 76.2 157.2 165.1 114.3 190.5 12.7 273.1 41.1 38.1
in 6 19 4.25 8.5 9.25 6.63 10.75  1/2 14.5 2.12 8 2   
mm 482.6 108 215.9 235 168.4 273.1 12.7 368.3 53.8 50.8
in 8    21.75 5 10.62 12 8.63 12.5  1/2 17.25 2.12 12 2   
mm 552.5 127 269.7 304.8 219.2 317.5 12.7 438.2 53.8 50.8
in 10 26.5 6.5 12.75 14.75 10.75 16.5  1/2 21.25 2.62 12 2 1/2
mm 673.1 165.1 323.9 374.7 273.1 419.1 12.7 539.8 66.5 63.5
in 12    30 7.25 15 17.38 12.75 18.25  1/2 24.38 2.88 12 2 3/4
mm 762 184.2 381 441.5 323.9 463.6 12.7 619.3 73.2 69.9
(1) Bore diameter to be specified by purchaser
(2) Other NPT and SW connections available upon request. 

Welding Neck Orifice Class 2500 Flange PDF (for printing).