Our NSF-61-372 certified Class 150 Forged Stainless Steel Raised Face Blind Flanges are manufactured from ASTM A182 or ASTM A240 in dual Grades 304/304L or 316/316L stainless steel. Dimensions and tolerances meet ASME B16.47 Series A specifications. We manufacture these flanges in domestic (AIS) options, and our machine shop can modify ANSI/ASME flanges to spec.
These products have been certified by NSF against the requirements of NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372. See official listing.
Downloads:
| API Part Number | Nominal Pipe Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Ø RF | Weight Lbs |
| SRFB2600-150A-CLN | 26 | 34.25 | BLIND | 31.75 | 1.375 | 24 | 2.63 | 29.50 | 373.0 |
| SRFB2800-150A-CLN | 28 | 36.50 | BLIND | 34.00 | 1.375 | 28 | 2.75 | 31.50 | 454.0 |
| SRFB3000-150A-CLN | 30 | 38.75 | BLIND | 36.00 | 1.375 | 28 | 2.88 | 33.75 | 543.0 |
| SRFB3200-150A-CLN | 32 | 41.75 | BLIND | 38.50 | 1.625 | 28 | 3.13 | 36.00 | 648.0 |
| SRFB3400-150A-CLN | 34 | 43.75 | BLIND | 40.50 | 1.625 | 32 | 3.19 | 38.00 | 783.0 |
| SRFB3600-150A-CLN | 36 | 46.00 | BLIND | 42.75 | 1.625 | 32 | 3.50 | 40.25 | 890.0 |
| SRFB3800-150A-CLN | 38 | 48.75 | BLIND | 45.25 | 1.625 | 32 | 3.38 | 42.25 | 1089.0 |
| SRFB4000-150A-CLN | 40 | 50.75 | BLIND | 47.25 | 1.625 | 36 | 3.50 | 44.25 | 1247.0 |
| SRFB4200-150A-CLN | 42 | 53.00 | BLIND | 49.50 | 1.625 | 36 | 3.75 | 47.00 | 1393.0 |
| SRFB4400-150A-CLN | 44 | 55.25 | BLIND | 51.75 | 1.625 | 40 | 3.94 | 49.00 | 1579.0 |
| SRFB4600-150A-CLN | 46 | 57.25 | BLIND | 53.75 | 1.625 | 40 | 4.00 | 51.00 | 1834.0 |
| SRFB4800-150A-CLN | 48 | 59.50 | BLIND | 56.00 | 1.625 | 44 | 4.19 | 53.50 | 2045.0 |
| SRFB5000-150A-CLN | 50 | 61.75 | BLIND | 58.25 | 1.875 | 44 | 4.32 | 55.50 | 2284.0 |
| SRFB5200-150A-CLN | 52 | 64.00 | BLIND | 60.50 | 1.875 | 44 | 4.50 | 57.50 | 2547.0 |
| SRFB5400-150A-CLN | 54 | 66.25 | BLIND | 62.75 | 1.875 | 44 | 4.69 | 59.50 | 2848.0 |
| SRFB5600-150A-CLN | 56 | 68.75 | BLIND | 65.00 | 1.875 | 48 | 4.82 | 62.00 | 3144.0 |
| SRFB5800-150A-CLN | 58 | 71.00 | BLIND | 67.25 | 1.875 | 48 | 5.00 | 64.00 | 3560.0 |
| SRFB6000-150A-CLN | 60 | 73.00 | BLIND | 69.25 | 1.875 | 52 | 5.13 | 66.00 | 3913.0 |
