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Find AWWA Class E Overbore Flanges at API International, Inc. These Overbore Flanges are AWWA Class #150, with AWWA Class #300 available upon request. Contact our sales team if you do not see the Overbore Flanges required for your project! We can add an overbore to any standard flange utilizing our machine shop. See our selection of standard AWWA Class E Flanges.
Downloads:
| API Part Number | I.D. | O.D. | THK | B.H.C. | B.H.C. Dia. | # of Bolts | Material |
| PFOB1400-1613-E | 16.13 | 21.00 | 1.875 | 18.75 | 1.125 | 12 | C207-13 |
| PFOB1600-1813-E | 18.13 | 23.50 | 2.000 | 21.25 | 1.130 | 16 | C207-13 |
| PFOB1800-1988-E | 19.88 | 25.00 | 2.130 | 22.75 | 1.250 | 16 | C207-13 |
| PFOB1800-2013-E | 20.13 | 25.00 | 2.130 | 22.75 | 1.250 | 16 | C207-13 |
| PFOB2000-2188-E | 21.88 | 27.50 | 2.380 | 25.00 | 1.250 | 20 | C207-13 |
| PFOB2400-2588-E-A105 | 25.88 | 32.00 | 1.250 | 29.50 | 1.375 | 20 | ASTM A105 |
| PFOB2400-2594-E-A105 | 25.94 | 32.00 | 2.630 | 29.50 | 1.380 | 20 | ASTM A105 |
| PFOB2400-2613-E-A105 | 26.13 | 32.00 | 2.630 | 29.50 | 1.380 | 20 | ASTM A105 |
| PFOB3000-3200-E-A105 | 32.00 | 38.75 | 2.880 | 36.00 | 1.380 | 28 | ASTM A105 |
| PFOB3000-3206-E-A105 | 32.06 | 38.75 | 2.880 | 36.00 | 1.375 | 28 | ASTM A105 |
| PFOB3600-3800-E-A105 | 38.00 | 46.00 | 3.130 | 42.75 | 1.630 | 32 | ASTM A105 |
| PFOB4200-4400-E-A105 | 44.00 | 53.00 | 3.380 | 49.50 | 1.630 | 36 | ASTM A105 |
| PFOB4800-5000-E-A105 | 50.00 | 59.50 | 3.500 | 56.00 | 1.630 | 44 | ASTM A105 |
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