During that mission, an isolation valve in the Dragon's propulsion system became stuck. ... That's similar to something Boeing did to mitigate the problem with Starliner's corroded valves.

Assuming Boeing and NASA can fix the stuck oxidizer isolation valve problem and complete the uncrewed OST-2 mission sometime in the first half of 2022, NASA will then look to schedule the first ...

Eaton launched its next-generation fuel tank isolation valve (FTIV) for hybrid vehicles. The new FTIV is smaller and lighter than its predecessor.