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 B 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 |
| SRFB2600-150B-CLN | 26 | 30.94 | BLIND | 29.31 | 0.875 | 36 | 1.69 | 28.00 | 373.0 |
| SRFB2800-150B-CLN | 28 | 32.94 | BLIND | 31.31 | 0.875 | 40 | 1.82 | 30.00 | 454.0 |
| SRFB3000-150B-CLN | 30 | 34.94 | BLIND | 33.31 | 0.875 | 44 | 1.94 | 32.00 | 543.0 |
| SRFB3200-150B-CLN | 32 | 37.06 | BLIND | 35.44 | 0.875 | 48 | 2.07 | 34.00 | 648.0 |
| SRFB3400-150B-CLN | 34 | 39.56 | BLIND | 37.69 | 1.000 | 40 | 2.19 | 36.25 | 783.0 |
| SRFB3600-150B-CLN | 36 | 41.62 | BLIND | 39.75 | 1.000 | 44 | 2.25 | 38.25 | 890.0 |
| SRFB3800-150B-CLN | 38 | 44.25 | BLIND | 42.12 | 1.125 | 40 | 2.44 | 40.25 | 1089.0 |
| SRFB4000-150B-CLN | 40 | 46.25 | BLIND | 44.12 | 1.125 | 44 | 2.57 | 42.50 | 1247.0 |
| SRFB4200-150B-CLN | 42 | 48.25 | BLIND | 46.12 | 1.125 | 48 | 2.63 | 44.50 | 1393.0 |
| SRFB4400-150B-CLN | 44 | 50.25 | BLIND | 48.12 | 1.125 | 52 | 2.75 | 46.50 | 1579.0 |
| SRFB4600-150B-CLN | 46 | 52.81 | BLIND | 50.56 | 1.250 | 40 | 2.88 | 48.62 | 1834.0 |
| SRFB4800-150B-CLN | 48 | 54.81 | BLIND | 52.56 | 1.250 | 44 | 3.00 | 50.75 | 2045.0 |
| SRFB5000-150B-CLN | 50 | 56.81 | BLIND | 54.56 | 1.250 | 48 | 3.13 | 52.75 | 2284.0 |
| SRFB5200-150B-CLN | 52 | 58.81 | BLIND | 56.56 | 1.250 | 52 | 3.25 | 54.75 | 2547.0 |
| SRFB5400-150B-CLN | 54 | 61.00 | BLIND | 58.75 | 1.250 | 56 | 3.38 | 56.75 | 2848.0 |
| SRFB5600-150B-CLN | 56 | 63.00 | BLIND | 60.75 | 1.250 | 60 | 3.50 | 58.75 | 3144.0 |
| SRFB5800-150B-CLN | 58 | 65.94 | BLIND | 63.44 | 1.375 | 48 | 3.62 | 60.75 | 3560.0 |
| SRFB6000-150B-CLN | 60 | 67.94 | BLIND | 65.44 | 1.375 | 52 | 3.75 | 63.00 | 3913.0 |
