| Shell diameter, mm | Pressure Py, MPa | Heat exchange area, min., m2 with tubes 025/38 | L, mm | Passage number | Í/2, mm | Dó, mm | Dy1, mm | l1, mm | l0, mm | À, mm | À0, mm |
| 273 (outer.) | 1,0–1,6 | 5 7 |
1500 2000 2500 3000 |
1 | 544 | 80 | 100 | 220 | 650 800 1150 1500 |
1060 1560 2050 2560 |
- |
| 325 (outer.) | 1,0–1,6 | 7 9,5 12 14,5 19,5 |
1500 2000 2500 3000 4000 |
1 | 584 | 80 | 100 | 220 | 650 800 1150 1500 2000 |
1050 1550 2050 2550 3550 |
- |
| 400 (intern.) | 1,0–1,6 | 18,5 23 28 37 |
2000 2500 3000 4000 |
1 2 |
726 | 100 | 150 | 240 | 800 1150 1500 2000 |
1550 2050 2550 3550 |
440 |
| 600 (intern.) | 1,0–1,6 | 42 53 63 84,5 |
2000 2500 3000 4000 |
1 2 4 6 |
1060 | 150 | 200 | 290 | 800 1150 1500 2000 |
1450 1950 2450 3450 |
550 |
| 800 (intern.) | 1,0–1,6 | 80/50 100/63 120/75,5 160/100 |
2000 2500 3000 4000 |
1 2 4 6 |
1254 | 200 | 250 | 310 | 2000 2500 3000 4000 |
1400 1900 2400 3400 |
630 |
Note: linear size deviations are as per project documentation.
Identification Example (for ordering):
ÒHeat exchanger w/closed-type distribution box and elliptical head 400 TNV-II-10-10-MT20/25-3-2 as per TU (Spec.) 26-02-1098-89, where:
400 – shell diameter, mm;
ÒÍÂ – vertical heat exchanger w/fixed tube sheets; nominal pressure (tubes and shell) 1,0 MPa;
ÌÒ20 – material design;
25 – heat-transfer tube diameter, mm;
3 – tube length, m;
2 – passage number per tube.




