Notes
Ductile Iron Backup Flanges | Backing Ring Flange: Dimensions are in inches
150# Drill Pattern Inside Diameters available in AFR (to fit Angle Face Rings) and IPS (to fit Stub-Ends)
Available Primer Painted or Hot-Dip Galvanized
ASTM A536 Material
Physical Properties (minimum)
Tensile Strength: 65,000 psi Yield Strength: 45,000 psi Elongation: 10%
Drilling Pattern #150
| Nominal Size | Inside Diameter – AFR (ID) |
Inside Diameter – IPS (ID) |
Outside Diameter (OD) |
Thickness (T) |
Bolt Circle (BC) |
Diameter Of Holes | No. of Bolt Holes | 45 Degree Bevel (B) |
Weight Each (lbs) |
|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 0.90 | 3.50 | 0.50 | 2.38 | 0.625 | 4 | 0.250 | 1.0 | |
| 3⁄4 | 1.11 | 3.88 | 0.50 | 2.75 | 0.625 | 4 | 0.250 | 1.4 | |
| 1 | 1.75 | 1.38 | 4.25 | 0.50 | 3.13 | 0.625 | 4 | 0.250 | 1.7 |
| 11⁄4 | 2.00 | 1.72 | 4.63 | 0.50 | 3.50 | 0.625 | 4 | 0.250 | 1.8 |
| 11⁄2 | 2.25 | 1.97 | 5.00 | 0.50 | 3.88 | 0.625 | 4 | 0.250 | 2.0 |
| 2 | 2.80 | 2.46 | 6.00 | 0.50 | 4.75 | 0.750 | 4 | 0.250 | 3.0 |
| 21⁄2 | 3.31 | 2.97 | 7.00 | 0.50 | 5.50 | 0.750 | 4 | 0.250 | 3.9 |
| 3 | 3.94 | 3.60 | 7.50 | 0.50 | 6.00 | 0.750 | 4 | 0.250 | 4.0 |
| 4 | 4.94 | 4.60 | 9.00 | 0.56 | 7.50 | 0.750 | 8 | 0.250 | 6.5 |
| 5 | 6.10 | 5.69 | 10.00 | 0.63 | 8.50 | 0.875 | 8 | 0.250 | 7.0 |
| 6 | 7.20 | 6.75 | 11.00 | 0.63 | 9.50 | 0.875 | 8 | 0.250 | 8.0 |
| 8 | 9.25 | 8.75 | 13.50 | 0.63 | 11.75 | 0.875 | 8 | 0.312 | 11.5 |
| 10 | 11.44 | 10.95 | 16.00 | 0.63 | 14.25 | 1.000 | 12 | 0.312 | 15.0 |
| 12 | 13.44 | 12.95 | 19.00 | 0.75 | 17.00 | 1.000 | 12 | 0.312 | 26.0 |
| 14 | 14.81 | 14.20 | 21.00 | 0.75 | 18.75 | 1.125 | 12 | 0.312 | 34.0 |
| 16 | 16.91 | 16.20 | 23.50 | 0.75 | 21.25 | 1.125 | 16 | 0.375 | 37.0 |
| 18 | 18.91 | 18.20 | 25.00 | 0.88 | 22.75 | 1.250 | 16 | 0.375 | 42.0 |
| 20 | 20.91 | 20.25 | 27.50 | 0.88 | 25.00 | 1.250 | 20 | 0.375 | 51.0 |
| 24 | 24.91 | 24.25 | 32.00 | 1.00 | 29.50 | 1.375 | 20 | 0.375 | 76.0 |
| 30 | 30.91 | 30.25 | 38.75 | 1.00 | 36.00 | 1.375 | 28 | 0.500 | 104.0 |
| 36 | 36.91 | 36.25 | 46.00 | 1.13 | 42.75 | 1.625 | 32 | 0.500 | 150.0 |
| 42 | 42.91 | 42.28 | 53.00 | 1.25 | 49.50 | 1.625 | 36 | 0.500 | 208.0 |
| 48 | 48.91 | 48.28 | 59.50 | 1.25 | 56.00 | 1.625 | 44 | 0.500 | 246.0 |
Notes
Dimensions are in inches
150# Drill Pattern Inside Diameters available in AFR (to fit Angle Face Rings) and IPS (to fit Stub-Ends)
Available Primer Painted or Hot-Dip Galvanized
ASTM A536 Material
Physical Properties (minimum)
Tensile Strength: 65,000 psi Yield Strength: 45,000 psi Elongation: 10%
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