Our AWWA Class SB Stainless Steel Ring Flanges are manufactured to meet AWWA C228 specifications. This flange type matches the #150 drill pattern, and is rated for a maximum 86psi at atmospheric temperature.
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| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Weight Lbs |
| SPF0200-B | 2 | 6.00 | 2.44 | 4.75 | 0.750 | 4 | 0.625 | 3.9 |
| SPF0250-B | 2.5 | 7.00 | 2.94 | 5.50 | 0.750 | 4 | 0.625 | 5.3 |
| SPF0300-B | 3 | 7.50 | 3.57 | 6.00 | 0.750 | 4 | 0.625 | 5.7 |
| SPF0400-B | 4 | 9.00 | 4.57 | 7.50 | 0.750 | 8 | 0.625 | 7.7 |
| SPF0500-B | 5 | 10.00 | 5.66 | 8.50 | 0.875 | 8 | 0.625 | 8.6 |
| SPF0600-B | 6 | 11.00 | 6.72 | 9.50 | 0.875 | 8 | 0.688 | 10.7 |
| SPF0800-B | 8 | 13.50 | 8.72 | 11.75 | 0.875 | 8 | 0.688 | 15.3 |
| SPF1000-B | 10 | 16.00 | 10.88 | 14.25 | 1.000 | 12 | 0.688 | 19.2 |
| SPF1200-B | 12 | 19.00 | 12.88 | 17.00 | 1.000 | 12 | 0.688 | 29.3 |
| SPF1400-B | 14 | 21.00 | 14.19 | 18.75 | 1.125 | 12 | 0.688 | 36.2 |
| SPF1600-B | 16 | 23.50 | 16.19 | 21.25 | 1.125 | 16 | 0.688 | 42.2 |
| SPF1800-B | 18 | 25.00 | 18.19 | 22.75 | 1.250 | 16 | 0.688 | 44.8 |
| SPF2000-B | 20 | 27.50 | 20.19 | 25.00 | 1.250 | 20 | 0.688 | 52.1 |
| SPF2200-B | 22 | 29.50 | 22.19 | 27.25 | 1.375 | 20 | 0.750 | 60.9 |
| SPF2400-B | 24 | 32.00 | 24.19 | 29.50 | 1.375 | 20 | 0.750 | 71.0 |
| SPF2600-B | 26 | 34.25 | 26.19 | 31.75 | 1.375 | 24 | 0.812 | 80.0 |
| SPF2800-B | 28 | 36.50 | 28.19 | 34.00 | 1.375 | 28 | 0.875 | 94.0 |
| SPF3000-B | 30 | 38.75 | 30.19 | 36.00 | 1.375 | 28 | 0.875 | 108.0 |
| SPF3200-B | 32 | 41.75 | 32.19 | 38.50 | 1.625 | 28 | 0.938 | 121.0 |
| SPF3400-B | 34 | 43.75 | 34.19 | 40.50 | 1.625 | 32 | 0.938 | 137.0 |
| SPF3600-B | 36 | 46.00 | 36.19 | 42.75 | 1.625 | 32 | 1.000 | 166.0 |
| SPF3800-B | 38 | 48.75 | 38.19 | 45.25 | 1.625 | 32 | 1.000 | 185.0 |
| SPF4000-B | 40 | 50.75 | 40.19 | 47.25 | 1.625 | 36 | 1.000 | 203.0 |
| SPF4200-B | 42 | 53.00 | 42.19 | 49.50 | 1.625 | 36 | 1.125 | 241.0 |
| SPF4400-B | 44 | 55.25 | 44.19 | 51.75 | 1.625 | 40 | 1.125 | 248.0 |
| SPF4600-B | 46 | 57.25 | 46.19 | 53.75 | 1.625 | 40 | 1.125 | 259.0 |
| SPF4800-B | 48 | 59.50 | 48.19 | 56.00 | 1.625 | 44 | 1.250 | 285.0 |
| SPF5000-B | 50 | 61.75 | 50.19 | 58.25 | 1.875 | 44 | 1.250 | 316.0 |
| SPF5200-B | 52 | 64.00 | 52.19 | 60.50 | 1.875 | 44 | 1.250 | 338.0 |
| SPF5400-B | 54 | 66.25 | 54.19 | 62.75 | 1.875 | 44 | 1.375 | 397.0 |
| SPF6000-B | 60 | 73.00 | 60.19 | 69.25 | 1.875 | 52 | 1.500 | 472.0 |
| SPF6600-B | 66 | 80.00 | 66.19 | 76.00 | 1.875 | 52 | 1.625 | 663.0 |
| SPF7200-B | 72 | 86.50 | 72.19 | 82.50 | 1.875 | 60 | 1.750 | 801.0 |
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