Fractional columns are designed to condense vapors drop out of the column and supply the column with reflux. Can be made of AISI 304 stainless steel or M2 copper

| Designation of the condenser | Heat exchange area, m2 | Working pressure, Mpa | Dimensions, not more than | Condenser's mass, kg, not more than | ||
| Tube side | Tube space | Diameter, mm | Height, mm | |||
| C-1,5 ST | 1,5 | 0,03 | 0,03 | 335 | 1280 | 80 |
| C-3,5 ST | 3,5 | 390 | 1780 | 160 | ||
| C-5 ST | 5 | 435 | 1780 | 230 | ||
| C-10 ST | 10 | 535 | 1780 | 390 | ||
| C-10 ST | 10 | 485 | 2280 | 390 | ||
| C-16 ST | 16 | 585 | 2280 | 420 | ||
| C-20 ST | 20 | 635 | 2320 | 650 | ||
| C-31,5 ST | 31,5 | 735 | 2320 | 1000 | ||