They are intended for discharge of remaining light and dark oil products, oil, lubricants, condensate including mixtures with water from technological lines (pipelines) and mechanisms in all branches of industry.

Technical Characteristics
| Capacity, m3 |
2; 4; 8; 10; 16; 20; 25; 40; 63 |
| Conventional pressure, MPa |
not over 0,07 |
| Maintenance temperature (of environment), °С |
from –60 to +200 |