Gas Pressure Regulators

Advanced mechanical gas pressure regulators for launcher propulsion lines. We ensure precise tank pressurization from satellites to super heavy launchers.

Download our brochure

Precise Tank Pressurization for Propulsion Stability
Maintaining exact pressure in propellant tanks is critical for the stability and performance of space launchers. Air Liquide’s mechanical Gas Pressure Regulators (GPR) are designed to bridge the high-pressure helium (He HP) storage and the low-pressure (LP) propellant tanks. By ensuring a highly controlled and continuous flow, our products guarantee reliable pressurization across all launch phases.

A Complete Range of Regulators

We offer a versatile product line tailored to the exact mass flow rates and architectural requirements of different space vehicles.

Small Gas Pressure Regulator GPR-S

  • Architecture: Single-stage regulation.
  • Performance: Mass flow rate of 4g/s with a regulated pressure of 31.4 bar.
  • Mass & Maturity: Ultra-lightweight at < 1.7kg, currently at TRL 6.

Medium Gas Pressure Regulator GPR-M

  • Architecture: Double-stage regulation.
  • Performance: Mass flow rate up to 29g/s with a regulated pressure of 20.74 bar.
  • Mass & Maturity: Weighs < 5kg, currently at TRL 7.

Large Gas Pressure Regulator GPR-L 

  • Architecture: Double-stage regulation 
  • Performance: High-capacity mass flow rate from 0.5g/s up to 170g/s.
  • Mass & Maturity: Flight-proven at TRL 9, weighing < 9kg (GPR-L)
  • Optionally: can integrate a filter, pressure transducer, and check/relief valves

Flight-Proven Heritage and Reliability

Our gas management systems are trusted by the world's leading space agencies and commercial spaceflight companies.

The GPR-L series boasts a Technology Readiness Level (TRL) of 9, having been successfully integrated and flown on major heavy-lift programs. We proudly boast 20 years of manufacturing experience and heritage from past large space projects and serve key industry players including ArianeGroup (for the Ariane 5 and Ariane 6 launchers).

Cleanroom Manufacturing Excellence

Precision in fluid management requires an uncompromising manufacturing environment. Air Liquide manufactures, assembles, and tests these highly critical mechanical components within our dedicated space cleanrooms.

We are fully equipped to meet the stringent quality standards and increasing cadence of both legacy and New Space launcher programs.

Documentation

Our Gas Management solutions

  • Xenon & Krypton Loading Carts
    Xenon (Xe) & krypton (Kr) loading carts for satellite electric propulsion. High-purity, highly accurate mass filling for LEO, MEO, and GEO missions.
    Read more
  • Scientific Missions Regulation Kit
    Miniature regulation kits (MLV & titanium micro-spheres) for space science gaseous chromatography. TRL7, flight-proven on ExoMars and DragonFly.
    Read more

Our Space Technologies solutions

See our technologies

Contact us

Send a message