Adaptor Backing Flanges
Adaptor bellow flange are used to fit a bellow to a flangehaving different bolt configuration.These flanges are madeof cast iron and are supplied with a split ring.
These are particularly used to fit a bellow with anon-glass equipment like Glass-lined Reactor etc. These areused in FBF, VBF type PTFE bellows.
Adaptor bellow flanges are generally supplied undrilled.However, if specified , these can be supplied drilled as per "Table E", "Table F" and “ASA150" standards.
Undrilling flanges
| CAT.REF. | DN | D | D1 | D2 | L |
|---|---|---|---|---|---|
| BFA0.5 | 12 | 80 | 25 | 28 | 6 |
| BFA0.7 | 15 | 85 | 29 | 37 | 6 |
| BFA1* | 25 | 115 | 43 | 51 | 10 |
| BFA1.5* | 40 | 150 | 58 | 66 | 10 |
| BFA2* | 50 | 165 | 70 | 81 | 12 |
| BFA3* | 80 | 200 | 101 | 112 | 12 |
| BFA4* | 100 | 220 | 134 | 148 | 12 |
| BFA6* | 150 | 285 | 186 | 196 | 15 |
| BFA9* | 225 | 395 | 260 | 282 | 15 |
| BFA12 | 300 | 445 | 342 | 363 | 18 |
Drilled to Table E
| CAT.REF. | PCD | n x dØ |
|---|---|---|
| BFA0.5/E | 62 | 4 x 7Ø |
| BFA0.7/E | 62 | 4 x 7Ø |
| BFA1/E | 82 | 4 x 12Ø |
| BFA1.5/E | 98 | 4 x 12Ø |
| BFA2/E | 114 | 4 x 16Ø |
| BFA3/E | 146 | 4 x 16Ø |
| BFA4/E | 178 | 8 x 16Ø |
| BFA6/E | 235 | 8 x 19Ø |
| BFA9/E | 324 | 12 x 19Ø |
| BFA12/E | 406 | 12 x 23Ø |
Drilled to Table F
| CAT.REF. | PCD | n x dØ |
|---|---|---|
| BFA0.5/F | 67 | 4 x 7Ø |
| BFA0.7/F | 67 | 4 x 7Ø |
| BFA1/F | 87 | 4 x 16Ø |
| BFA1.5/F | 105 | 14 x 16Ø |
| BFA2/F | 127 | 4 x 16Ø |
| BFA3/F | 165 | 8 x 16Ø |
| BFA4/F | 190 | 8 x 16Ø |
| BFA6/F | 260 | 12 x 19Ø |
| BFA9/F | 356 | 12 x 23Ø |
| BFA12/F | 438 | 12 x 23Ø |
Drilled to ASA 150
| CAT.REF. | PCD | n x dØ |
|---|---|---|
| BFA0.5/A | 62 | 4 x 7Ø |
| BFA0.7/A | 62 | 4 x 7Ø |
| BFA1/A | 79 | 4 x 16Ø |
| BFA1.5/A | 98 | 4 x 16Ø |
| BFA2/A | 121 | 4 x 19Ø |
| BFA3/A | 152 | 4 x 19Ø |
| BFA4/A | 190 | 8 x 19Ø |
| BFA6/A | 241 | 8 x 19Ø |
| BFA9/A | 298 | 8 x 19Ø |
| BFA12/A | 432 | 12 x 23Ø |
