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Welding Neck Orifice Class 300SO Flanges

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  Slip-On Orifice Class 300  
     

Drilling
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
O C R X B Y TT
in 1 4.88 1.5 2 2.12 1.36 1.88  1/4 3.5 0.69 4  5/8
mm 124 38.1 50.8 53.8 34.5 47.8 6.4 88.9 17.5 15.9
in 1 1/2 6.12 1.5 2.88 2.75 1.95 1.88  1/4 4.5 0.81 4  3/4
mm 155.4 38.1 73.2 69.9 49.50 47.8 6.4 114.3 20.6 19.1
in 2 6.5 1.5 3.62 3.31 2.44 1.94  1/4 5 0.69 8  5/8
mm 165.1 38.1 91.9 84.1 62.0 49.3 6.4 127 17.5 15.9
in 2 1/2 7.5 1.5 4.12 3.94 2.94 2.00  1/4 5.88 0.81 8  3/4
mm 190.5 38.1 104.6 100.1 74.7 50.8 6.4 149.4 20.6 19.1
in 3 8.25 1.5 5 4.62 3.57 2.06  3/8 6.62 0.81 8  3/4
mm 209.6 38.1 127 117.3 90.7 52.3 9.5 168.1 20.6 19.1
in 4 10 1.5 6.19 5.75 4.57 2.12  1/2 7.88 0.81 8  3/4
mm 254 38.1 157.2 146.1 116.1 53.8 12.7 200.2 20.6 19.1
in 6 12.5 1.5 8.5 8.12 6.72 2.12  1/2 10.62 0.88 12  3/4
mm 317.5 38.1 215.9 206.2 170.7 53.8 12.7 269.7 22.4 19.1
in 8 15 1.62 10.62 10.25 8.72 2.44  1/2 13 1 12  7/8
mm 381 41.1 269.7 260.4 221.5 62.0 12.7 330.2 25.4 22.2
in 10 17.5 1.88 12.75 12.62 10.88 2.62  1/2 15.25 1.12 16 1   
mm 444.5 47.8 323.9 320.5 276.4 66.5 12.7 387.4 28.4 25.4
in 12 20.5 2 15 14.75 12.88 2.88  1/2 17.75 1.25 16 1 1/8
mm 520.7 50.8 381 374.7 327.2 73.2 12.7 450.9 31.8 28.6
in 14 23 2.12 16.25 16.75 14.14 3.00  1/2 20.25 1.25 20 1 1/8
mm 584.2 53.8 412.8 425.5 359.2 76.2 12.7 514.4 31.8 28.6
in 16 25.5 2.25 18.5 19 16.16 3.25  1/2 22.5 1.38 20 1 1/4
mm 647.7 57.2 469.9 482.6 410.5 82.6 12.7 571.5 35.1 31.8
in 18 28 2.38 21 21 18.18 3.5  1/2 24.75 1.38 24 1 1/4
mm 711.2 60.5 533.4 533.4 461.8 88.9 12.7 628.7 35.1 31.8
in 20 30.5 2.5 23 23.12 20.20 3.75  1/2 27 1.38 24 1 1/4
mm 774.7 63.5 584.2 587.2 513.1 95.3 12.7 685.8 35.1 31.8
in 24 36 2.75 27.25 27.62 24.25 4.19  1/2 32 1.62 24 1 1/2
mm 914.4 69.9 692.2 701.5 616 106.4 12.7 812.8 41.1 38.1

(1)- Other NPT and SW connections available upon request

Welding Neck Orifice Class 300SO Flange PDF (for printing).