Class 900WN FLANGES

Special One or Two Piece Ring and Orifice Plate Assembly - Groove Detail

Ring Type Joint Weld Neck Orifice Flanges Class 400 - 2500

Raised Face Weld Neck Orifice Flanges Class 400 - 2500

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)
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 3 9.5 1.5 5 5 3.5 4  3/8 7.5 1 8  7/8 R31 4.875 0.312 0.469 0.03 1.06
mm 241.3 38.1 127 127 88.9 101.6 9.5 190.5 25.4 22.2 123.825 7.925 11.913 0.8 26.9
in 4 11.5 1.75 6.19 6.25 4.5 4.5  1/2 9.25 1.25 8 1 1/8 R37 5.875 0.312 0.469 0.03 1.06
mm 292.1 44.5 157.2 158.8 114.3 114.3 12.7 235 31.8 28.6 149.225 7.925 11.913 0.8 26.9
in 6 15 2.19 8.5 9.25 6.63 5.5  1/2 12.5 1.25 12 1 1/8 R45 8.312 0.312 0.469 0.03 1.06
mm 381 55.6 215.9 235 168.4 139.7 12.7 317.5 31.8 28.6 211.125 7.925 11.913 0.8 26.9
in 8 18.5 2.5 10.62 11.75 8.63 6.38  1/2 15.5 1.5 12 1 3/8 R49 10.625 0.312 0.469 0.03 1.06
mm 469.9 63.5 269.7 298.5 219.2 162.1 12.7 393.7 38.1 34.9 269.875 7.925 11.913 0.8 26.9
in 10 21.5 2.75 12.75 14.5 10.75 7.25  1/2 18.5 1.5 16 1 3/8 R53 12.75 0.312 0.469 0.03 1.06
mm 546.1 69.9 323.9 368.3 273.1 184.2 12.7 469.9 38.1 34.9 323.850 7.925 11.913 0.8 26.9
in 12 24 3.12 15 16.5 12.75 7.88  1/2 21 1.5 20 1 3/8 R57 15 0.312 0.469 0.03 1.06
mm 609.6 79.2 381 419.1 323.9 200.2 12.7 533.4 38.1 34.9 381.000 7.925 11.913 0.8 26.9
in 14 25.25 3.38 16.25 17.75 14 8.38  1/2 22 1.62 20 1 1/2
mm 641.4 85.9 412.8 450.9 355.6 212.9 12.7 558.8 41.1 38.1
in 16 27.75 3.5 18.5 20 16 8.5  1/2 24.3 1.75 20 1 5/8
mm 704.9 88.9 469.9 508 406.4 215.9 12.7 616 44.5 41.3
in 18 31 4 21 22.25 18 9  1/2 27 2 20 1 7/8
mm 787.4 101.6 533.4 565.2 457.2 228.6 12.7 685.8 50.8 47.6
in 20 33.75 4.25 23 24.5 20 9.75  1/2 29.5 2.12 20 2
mm 857.3 108 584.2 622.3 508 247.7 12.7 749.3 53.8 50.8
in 24 41 5.5 27.25 29.5 24 11.5  1/2 35.5 2.62 20 2 1/2
mm 1041.4 139.7 692.2 749.3 609.6 292.1 12.7 901.7 66.5 63.5

(1) Bore diameter to be specified by purchaser
(2) Other NPT and SW connections available upon request.
Welding Neck Orifice Class 900 Flange PDF (for printing).