|
 The Electrohydraulic valve (EHV) is
intended for opening/closing a line delivering liquid oxygen.
Reliability of the valve is ensured by:
- application of a closing element "metal-metal";
- low friction in moving pairs.
|
| Characteristic | EHV 1 | EHV 2 |
| Type of valves | Normally open of direct action | Normally closed of direct action |
| Flow passage conventional diameter, mm | 4 |
| Working pressure range, MPa | 0…0,62 |
| Working medium | LOX, water, air, kerosene |
| Opening pressure, MPa, min | 1,6 |
| Coefficient of hydraulic losses | 1,72 |
| External leak rate, scc/s, max | no more than 10-6 |
Internal air leak rate, scc/s, max
- internal LOX leak rate, scc/s, max | 5
0,2 |
| Max time of opening/closing, s | 0,1 |
| Range of working temperatures, °C | -178…+50 |
| Feed voltage, V | 24…32 |
| Kind of current | direct |
| Max power consumption of the electric magnet, W | 65 |
Resistance of magnet's winding, Ohm,
within the temperature range of -210…+60°C |
16…35 |
| Service life (cycles), min | 400 |
| Mass, kg, max | 1,55 |
The valves are manufactured serially and used in the space-rocket technology. Application in other industry
branches is possible. |
Development of company
