Our NSF-61-372 certified Class 150 Forged Stainless Steel Raised Face Weld-Neck Flanges are manufactured from ASTM A182 dual grade 304/304L and 316/316L stainless steel, and the 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 1 | THK 2 | Ø H.D. | Ø A (Weld Point) | Ø R.F. | R.H. (RAD) | Weight (Lbs.) |
| SRFWN2600-150A-CLN | 26 | 34.25 | specified by purchaser | 31.75 | 1.375 | 24 | 2.63 | 4.69 | 26.62 | 26 | 29.50 | 0.38 | 120.0 |
| SRFWN2800-150A-CLN | 28 | 36.50 | specified by purchaser | 34.00 | 1.375 | 28 | 2.75 | 4.88 | 28.62 | 28 | 31.50 | 0.44 | 140.0 |
| SRFWN3000-150A-CLN | 30 | 38.75 | specified by purchaser | 36.00 | 1.375 | 28 | 2.88 | 5.32 | 30.75 | 30 | 33.75 | 0.44 | 150.0 |
| SRFWN3200-150A-CLN | 32 | 41.75 | specified by purchaser | 38.50 | 1.625 | 28 | 3.13 | 5.63 | 32.75 | 32 | 36.00 | 0.44 | 170.0 |
| SRFWN3400-150A-CLN | 34 | 43.75 | specified by purchaser | 40.50 | 1.625 | 32 | 3.19 | 5.82 | 34.75 | 34 | 38.00 | 0.50 | 210.0 |
| SRFWN3600-150A-CLN | 36 | 46.00 | specified by purchaser | 42.75 | 1.625 | 32 | 3.50 | 6.13 | 36.75 | 36 | 40.25 | 0.50 | 240.0 |
| SRFWN3800-150A–CLN | 38 | 48.75 | specified by purchaser | 45.25 | 1.625 | 32 | 3.38 | 6.13 | 39.00 | 38 | 42.25 | 0.50 | 290.0 |
| SRFWN4000-150A-CLN | 40 | 50.75 | specified by purchaser | 47.25 | 1.625 | 36 | 3.50 | 6.38 | 41.00 | 40 | 44.25 | 0.50 | 310.0 |
| SRFWN4200-150A-CLN | 42 | 53.00 | specified by purchaser | 49.50 | 1.625 | 36 | 3.75 | 6.69 | 43.00 | 42 | 47.00 | 0.50 | 345.0 |
| SRFWN4400-150A-CLN | 44 | 55.25 | specified by purchaser | 51.75 | 1.625 | 40 | 3.94 | 6.94 | 45.00 | 44 | 49.00 | 0.50 | 370.0 |
| SRFWN4600-150A-CLN | 46 | 57.25 | specified by purchaser | 53.75 | 1.625 | 40 | 4.00 | 7.25 | 47.12 | 46 | 51.00 | 0.50 | 435.0 |
| SRFWN4800-150A-CLN | 48 | 59.50 | specified by purchaser | 56.00 | 1.625 | 44 | 4.19 | 7.50 | 49.12 | 48 | 53.50 | 0.50 | 480.0 |
| SRFWN5000-150A-CLN | 50 | 61.75 | specified by purchaser | 58.25 | 1.875 | 44 | 4.32 | 7.94 | 51.25 | 50 | 55.50 | 0.50 | 520.0 |
| SRFWN5200-150A-CLN | 52 | 64.00 | specified by purchaser | 60.50 | 1.875 | 44 | 4.50 | 8.19 | 53.25 | 52 | 57.50 | 0.50 | 550.0 |
| SRFWN5400-150A-CLN | 54 | 66.25 | specified by purchaser | 62.75 | 1.875 | 44 | 4.69 | 8.44 | 55.25 | 54 | 59.50 | 0.50 | 620.0 |
| SRFWN5600-150A-CLN | 56 | 68.75 | specified by purchaser | 65.00 | 1.875 | 48 | 4.82 | 8.94 | 57.38 | 56 | 62.00 | 0.50 | 650.0 |
| SRFWN5800-150A-CLN | 58 | 71.00 | specified by purchaser | 67.25 | 1.875 | 48 | 5.00 | 9.19 | 59.38 | 58 | 64.00 | 0.50 | 780.0 |
| SRFWN6000-150A-CLN | 60 | 73.00 | specified by purchaser | 69.25 | 1.875 | 52 | 5.13 | 9.38 | 61.38 | 60 | 66.00 | 0.50 | 850.0 |
