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Adaptor backing flanges are used to couple a glass end to the flange having a different bolt configuration. These flanges are made of cast iron and are supplied with inserts.

These are particularly used to fit glass equipment on non-glass equipment like Glass-lined reactors etc.

Adaptor backing flanges are generally supplied undrilled. However, if specified, these can be supplied drilled as per “Table E”, “Table F” and “ASA150” standards.

ADAPTOR BACKING FLANGES TABLE

Undrilled flanges Drilled to Table E
Cat.Ref. DN D D1 D2 L Cat.Ref. pcd n x dØ
 CFA1 25 115 43 51 10 CFA1/E1 82 4 x 12Ø
 CFA1.5 40 150 58 66 10 BFA1.5/E 98 4 x 16Ø
 CFA2* 50 165 70 81 12 CFA2/E 114 4 x 16Ø
 CFA3* 80 200 101 112 12 CFA3/E 146 4 x 16Ø
 CFA4* 100 220 134 148 12 CFA4/E 178 8 x 16Ø
 CFA6* 150 285 186 196 15 CFA6/E 235 8 x 19Ø
 CFA9* 225 395 260 282 15 CFA9/E 324 12 x 19Ø
 CFA12/E 300 445 342 363 18 CFA12/A 406 12 x 23Ø

 

Drilled to Table F Drilled to ASA 150
Cat.Ref. pcd n x dØ Cat.Ref. pcd n x dØ
 CFA1/F 87 4 x 16Ø  CFA1/A 79 4 x 16Ø
 CFA1.5/F 105 4 x 16Ø  CFA1.5/A 98 4 x 16Ø
 CFA2/F 127 4 x 16Ø  CFA2/A 121 4 x 19Ø
 CFA3/F 165 8 x 16Ø  CFA3/A 152 4 x 16Ø
 CFA4/F 190 8 x 16Ø  CFA4/A 190 8 x 16Ø
 CFA6/F 260 12 x 19Ø  CFA6/A 241 8 x 19Ø
 CFA9/F 356 12 x 230  CFA9/A 298 8 x 19Ø
 CFA12/F 438 16 x 23Ø  CFA12/A 432 12 x 23Ø