Helium Pneumatic Pressure Regulator
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Key Features
- Nominal 250 psia regulated outlet
- Inlet pressures from 400 – 2500 psia
- Primary operation: upstream regulates with downstream open
- Each stage meets specified flow and pressure requirements
- Temperature-compensated
- Inlet and outlet filters
- First stage flow limiter
- In development; qualification in fall 2021
Variants Available
- Single stage unit
- No flow limiter
- Regulation set point can be adjusted
| Characteristics | Performance / Interfaces |
| Unit Weight | 13.0 lbm max. |
| Dimensions | 10.5 inch x 8.8 inch x 3.1 inch |
| Flow Rate (Operating) | 1.2 - 24.5 SCFM (helium) |
| Maximum Flow Rate | 50 SCFM (helium) |
| Surge Protection Flow Rate | < 4.0 SCFM (@ min. 20,000 psi/sec) |
| Internal Leakage | < 0.007 scc/sec (@ lock-up) |
| External Leakage | < 1x10-6 scc/sec |
| Temperature (Operating) | -40°F to 160°F |
| Cycle Life | 1500 Cycles |
| MEOP (Inlet) | 2500 psia |
| Regulated Pressure (Outlet) | 250 psia (nominal) |
| Lock-up | 260 psia (single stage) |
| Wetted Materials | Titanium, stainless steel, inconel |
50X1463 series Redundant Regulator
The 50X1463 series redundant regulator is a fully mechanically high to low pressure control device that produces stable downstream pressure with no power requirements. The series redundant design provides a close tolerance regulation band and single fault tolerance for a failed open condition of either the first or second regulation stage. The pressurant regulator will be propellant compatible in support of chemical propulsion systems. This regulator is currently in development.
| Characteristics | Performance / Interfaces |
| Materials of Construction | Stainless Steel, Inconel, and Titanium |
| MEOP / Proof / Burst Pressure | 4800 / 7200 / 12000 psia (331 / 497 / 827 bar) |
| Minimum Inlet Operating Pressure | 400 psia (27.5 bar) |
| Internal Leakage | < 5.58 x 10-3 sccs GHe at lock up |
| External Leakage | < 1 x 10-6 sccs GHe |
| Regulated Pressure | 270 psig (18.6 bar) first stage nominal 277 psig (19.1 bar) failed stage nominal |
| Lock Up Pressure | 289 psia (19.92 bar) max |
| Flow Rate | 0.002 lbm/s (0.91 g/s) GHe max at 400 psia inlet |
| Filtration | 55 micron absolute inlet and outlet |
| Random Vibration | 15.9 grms |
| Thermal | -62 to 54°C (-80 to 130°F) operational |
| Life | >500 operating cycles |
| Mass | 4 lbm (1.8 kg) max |
