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 B16.5 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 | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Ø RF | Weight Lbs |
| SRFB0050-CLN | 0.5 | 3.50 | BLIND | 2.38 | 0.630 | 4 | 0.44 | 1.38 | 3.0 |
| SRFB0075-CLN | 0.75 | 3.88 | BLIND | 2.75 | 0.630 | 4 | 0.50 | 1.69 | 4.0 |
| SRFB0100-CLN | 1 | 4.25 | BLIND | 3.13 | 0.630 | 4 | 0.56 | 2.00 | 4.5 |
| SRFB0125-CLN | 1.25 | 4.63 | BLIND | 3.50 | 0.630 | 4 | 0.63 | 2.50 | 5.0 |
| SRFB0150-CLN | 1.5 | 5.00 | BLIND | 3.88 | 0.630 | 4 | 0.69 | 2.88 | 5.5 |
| SRFB0200-CLN | 2 | 6.00 | BLIND | 4.75 | 0.750 | 4 | 0.75 | 3.63 | 6.0 |
| SRFB0250-CLN | 2.5 | 7.00 | BLIND | 5.50 | 0.750 | 4 | 0.88 | 4.13 | 9.0 |
| SRFB0300-CLN | 3 | 7.50 | BLIND | 6.00 | 0.750 | 4 | 0.94 | 5.00 | 11.5 |
| SRFB0350-CLN | 3.5 | 8.50 | BLIND | 7.00 | 0.750 | 8 | 0.94 | 5.50 | 13.5 |
| SRFB0400-CLN | 4 | 9.00 | BLIND | 7.50 | 0.750 | 8 | 0.94 | 6.19 | 15.5 |
| SRFB0500-CLN | 5 | 10.00 | BLIND | 8.50 | 0.875 | 8 | 0.94 | 7.31 | 19.5 |
| SRFB0600-CLN | 6 | 11.00 | BLIND | 9.50 | 0.875 | 8 | 1.00 | 8.50 | 25.5 |
| SRFB0800-CLN | 8 | 13.50 | BLIND | 11.75 | 0.875 | 8 | 1.13 | 10.63 | 44.5 |
| SRFB1000-CLN | 10 | 16.00 | BLIND | 14.25 | 1.000 | 12 | 1.19 | 12.75 | 67.0 |
| SRFB1200-CLN | 12 | 19.00 | BLIND | 17.00 | 1.000 | 12 | 1.25 | 15.00 | 98.0 |
| SRFB1400-CLN | 14 | 21.00 | BLIND | 18.75 | 1.125 | 12 | 1.38 | 16.25 | 134.0 |
| SRFB1600-CLN | 16 | 23.50 | BLIND | 21.25 | 1.125 | 16 | 1.44 | 18.50 | 176.0 |
| SRFB1800-CLN | 18 | 25.00 | BLIND | 22.75 | 1.250 | 16 | 1.56 | 21.00 | 215.0 |
| SRFB2000-CLN | 20 | 27.50 | BLIND | 25.00 | 1.250 | 20 | 1.69 | 23.00 | 286.0 |
| SRFB2200-CLN | 22 | 29.50 | BLIND | 27.25 | 1.375 | 20 | 1.84 | 25.25 | 358.0 |
| SRFB2400-CLN | 24 | 32.00 | BLIND | 29.50 | 1.375 | 20 | 1.88 | 27.25 | 426.0 |
