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| overfall valve (Konstantin 1966) | |||
| клапан перепада: 29 phrases in 14 subjects |
| Astronautics | 3 |
| Automated equipment | 1 |
| Aviation | 1 |
| Combustion gas turbines | 1 |
| Construction | 1 |
| Hydraulics | 1 |
| Karachaganak | 2 |
| Nautical | 2 |
| Oil and gas | 1 |
| Sakhalin | 5 |
| Sakhalin S | 1 |
| Technology | 6 |
| Thermal engineering | 3 |
| Transport | 1 |