Capitalizing on its cryogenic engineering capabilities and extensive experience on space specific requirements, Air Liquide has developed a full range of mechanical gas pressure regulators. Air Liquide offers both standard and customized turnkey solutions to meet your specific needs and supports you throughout the different phases of your project: from preliminary studies to system qualification.
The gas pressure regulators designed and developed by Air Liquide make it possible to meet a very broad need for gas regulation for launcher applications (light, medium, heavy launchers). Thanks to their high reliability and performance, Air Liquide's regulators are positioned as an essential element in the propulsion chain.
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GPR-S
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GPR-M
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GPR-L
Key benefits
- High level of accuracy
- Robustness
- Tightness
- Very compact size
- Qualified for flight
How does it work?
These gas pressure regulators mechanically regulate a gas via one or multiple stages according to the application and engaged flow rates.
Key figures
External Leak rate 10-4 scc/s (GHe) GPR-S
Mass < 5 kg GPR-M
Large thermal environment -120 / 50 °C GPR-L
Performance and technical specifications
| GPR-S: Low Flow Rate Gas Pressure Regulator | GPR-M: Medium Flow Rate Gas Pressure Regulator | GPR-L: Large Flow Rate Gas Pressure Regulator | |
|---|---|---|---|
| Application |
Small Launchers |
Upper Stage Heavy Launchers |
Upper stage heavy and super-heavy launchers |
|
Media (operational) |
Gaseous Helium |
Gaseous Helium |
Gaseous Helium |
| Media (compatibility) |
Inert gas |
Inert gas |
Inert gas |
|
Upstream Pressure |
328 - 40 bar |
400 - 44 bar |
400 - 58 bar |
|
Regulated Pressure |
31.4 ± 0.6 bar |
20.75 ± 0.65 bar |
41 to 49 barA according to the mass flow rate |
|
Mass Flow Rate |
4 g/s (nominal) |
22.5 g/s (6.5 to 29 g/s) |
0.5 g/s to 170 g/s |
|
Response Time |
< 100ms |
< 100ms |
< 2s |
|
External Leakage |
10-4 scc/s (GHe) |
< 10-2 scc/s (GHe) | 1 scc/s (GHe) |
|
Stage Number |
1 | 2 | 3 |
References
All gas pressure regulators developed by Air Liquide have been selected on all European launchers (Ariane 5 and 6 programs, VEGA-C) and on other heavy launchers projects.
Download our brochure
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Mechanical Pressure Regulator
Download the document PDF (378.28 KB)
Contact Us
For more information, find on this page your key contacts and our contact form.
Space
Air Liquide has the ambition, the will and the expertise to engage in all the major new international challenges: electric propulsion, more competitive launch vehicles, the constellation of satellites, life in space, and more.