Pressure Regulation Assembly (PRA)
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| Characteristic | Performance / Interfaces |
| Materials of Construction | Stainless Steel, Aluminum flight plate |
| MEOP / Proof / Burst | 2700 / 4050 / 6750 psia (186 / 279 / 465 bar) |
| Regulated Pressure | 37 psia (2.55 bar) typical, any range from 0 – inlet pressure possible |
| External Leakage | < 1e-6 scc/s, GHe @ MEOP |
| Supply Voltage | 28 Vdc, 6-11 Vdc equivalent PFCV operating range (current driven) |
| Internal Leakage | < 8.3e-4 scc/s GHe @ MEOP per valve |
| Minimum Flow Rate Capacity | 23 mg/sec GXe maximum at 37 psia inlet |
| Fluids | GXe, GAr, GHe, GN2 |
| Temperature Range(s) | Operating: -10 to 60°C (14 to 140°F) Non-operating: -35 to 70°C (-31 to 158°F) |
| Transducer Voltage | 10Vdc nominal supply, 0-25 mVdc HP, 0-8 mVdc LP output |
| Filtration | 25 micron absolute per each PFCV |
| Sine Vibration | Up to 13g |
| Random Vibration | 14.1 grms |
| Shock | Up to 2000g @ 2000 Hz |
| Mass | < 3 lbm (1.4 kg) |
| Heritage | D2S2 |
