|
 The Electrohydraulic valve (EHV) is
intended for opening/closing lines delivering propellants to the LRE gas generator or combustion chamber under commands of a control
system.
Reliability of the valve is ensured by:
- low friction in moving pairs;
- low pressure loss of the flow passage;
- high response.
- stable position of the closing element after opening.
|
| Characteristic | EHV 1 | EHV 2 | EHV 3 |
| Type of valves | Normally closed with amplification |
| Flow passage conventional diameter, mm | 8 | 12 | 14 |
| Working pressure range, MPa | 2…24 |
| Working medium | Monopropellant, kerosene, NTO, UDMH, water |
| External leak rate, scc/s, max | no more than 10-6 |
| Internal air leak rate, scc/s, max | 0,2 |
| Max time of opening/closing, s | 0,08 |
| Range of working temperatures, °C | -5…+50 |
| Feed voltage, V | 24…32 |
| Kind of current | direct |
| Max power consumption, W | 36,5 |
| Coefficient of hydraulic losses | 35,7 | 4,8 | 2,27 |
| Mass, kg, max | 0,4 |
The valves are manufactured serially and used in the space-rocket technology. Application in other industry
branches is possible. |
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