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Seal off piping systems with AWWA Class F Steel Blind Flanges, manufactured to American Water Works Association (AWWA) C207 and ANSI #300 bolt pattern specifications. At atmospheric temperature, this Class F flange is rated up to 300 psi.
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| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Weight Lbs |
| PFBL0400-F | 4 | 10.00 | BLIND | 7.88 | 0.875 | 8 | 1.130 | 23.6 |
| PFBL0500-F | 5 | 11.00 | BLIND | 9.25 | 0.875 | 8 | 1.210 | 30.9 |
| PFBL0600-F | 6 | 12.50 | BLIND | 10.62 | 0.875 | 12 | 1.310 | 42.9 |
| PFBL0800-F | 8 | 15.00 | BLIND | 13.00 | 1.000 | 12 | 1.310 | 62.1 |
| PFBL1000-F | 10 | 17.50 | BLIND | 15.25 | 1.125 | 16 | 1.500 | 95.5 |
| PFBL1200-F | 12 | 20.50 | BLIND | 17.75 | 1.250 | 16 | 1.630 | 143.4 |
| PFBL1400-F | 14 | 23.00 | BLIND | 20.25 | 1.250 | 20 | 1.940 | 214.9 |
| PFBL1600-F | 16 | 25.50 | BLIND | 22.50 | 1.375 | 20 | 2.140 | 291.7 |
| PFBL1800-F | 18 | 28.00 | BLIND | 24.75 | 1.375 | 24 | 2.250 | 369.8 |
| PFBL2000-F | 20 | 30.50 | BLIND | 27.00 | 1.375 | 24 | 2.330 | 458.8 |
| PFBL2200-F | 22 | 33.00 | BLIND | 29.25 | 1.375 | 24 | 2.500 | 580.6 |
| PFBL2400-F | 24 | 36.00 | BLIND | 32.00 | 1.625 | 24 | 2.690 | 737.9 |
| PFBL2600-F | 26 | 38.25 | BLIND | 34.50 | 1.875 | 28 | 3.000 | 911.0 |
| PFBL2800-F | 28 | 40.75 | BLIND | 37.00 | 1.875 | 28 | 3.130 | 1088.0 |
| PFBL3000-F | 30 | 43.00 | BLIND | 39.25 | 1.875 | 28 | 3.166 | 1233.3 |
| PFBL3200-F | 32 | 45.25 | BLIND | 41.50 | 1.875 | 28 | 3.332 | 1445.2 |
| PFBL3400-F | 34 | 47.50 | BLIND | 43.50 | 1.875 | 28 | 3.475 | 1668.6 |
| PFBL3600-F | 36 | 50.00 | BLIND | 46.00 | 2.125 | 32 | 3.671 | 1924.2 |
| PFBL3800-F | 38 | 52.25 | BLIND | 48.00 | 2.125 | 32 | 3.815 | 2195.0 |
| PFBL4000-F | 40 | 54.25 | BLIND | 50.25 | 2.125 | 36 | 3.982 | 2463.8 |
| PFBL4200-F | 42 | 57.00 | BLIND | 52.75 | 2.125 | 36 | 4.171 | 2864.7 |
| PFBL4400-F | 44 | 59.25 | BLIND | 55.00 | 2.125 | 36 | 4.338 | 3231.9 |
| PFBL4600-F | 46 | 61.50 | BLIND | 57.25 | 2.125 | 40 | 4.505 | 3628.7 |
| PFBL4800-F | 48 | 65.00 | BLIND | 60.75 | 2.125 | 40 | 4.781 | 4322.1 |
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