Redwire Space Europe completed the Arthrospira-C Bioreactor Experiment aboard the International Space Station (ISS) in a major milestone for space-based life support systems. The experiment ran for 64 days and used a bioreactor system to generate oxygen—a byproduct of growing cyanobacteria. This provided astronauts with an additional, renewable source of breathable air.
A Milestone in Space Bioreactor Technology
Completed in January 2025, Arthrospira-C became the longest-running bioreactor experiment in space. Developed by Redwire Space Europe, the system used Arthrospira platensis, a strain of cyanobacteria, to naturally produce oxygen. This effort supports the growing need for closed-loop life support systems during extended space missions.
The experiment’s success moves us closer to sustainable oxygen generation without constant resupply from Earth. This is a critical step toward long-duration human spaceflight.
Vernay’s Umbrella Valve: Small Part, Big Impact
A key element in the bioreactor’s performance was Vernay’s VA3497 umbrella valve. This component played a vital role in maintaining fluid pressure within safe limits. It controlled one-way fluid flow, ensured constant overpressure, and prevented dangerous leaks or backflow.
In microgravity, even small fluid irregularities can cause system failures. The Vernay valve helped eliminate that risk—ensuring both equipment stability and crew safety throughout the experiment.
Meeting the Demands of Aerospace Engineering
The Arthrospira-C experiment proves the value of high-reliability, precision-engineered components in extreme environments. Redwire’s choice to include Vernay valves reflects a commitment to both innovation and safety.
Moreover, this application reinforces Vernay’s role as a trusted partner in aerospace fluid control. Our components are designed to perform consistently in challenging conditions—whether in orbit or on Earth.
This successful test opens new doors for space-based oxygen generation and sustainable life support. It also validates the growing role of biological systems integrated with mechanical precision.
As exploration missions reach farther into space, the demand for closed-loop, self-sustaining systems will only increase. Vernay is proud to contribute to this future by developing parts that make mission-critical systems reliable and efficient.
Looking Ahead: Continued Innovation at Vernay
As we expand our work across aerospace, life sciences, and advanced manufacturing, we remain focused on solving tough engineering challenges. The Arthrospira-C Bioreactor Experiment stands as proof of Vernay’s dedication to precision, safety, and innovation—no matter how far from Earth our parts may go.
Congratulations to Redwire Space Europe and all teams involved in this remarkable achievement!
