Rapidly Attachable Fluid Transfer Interface (RAFTI) is a standard interface developed by Orbit Fab for transferring fluids, e.g., propellants, in space.
The interface specification has high and low pressure variants, both for operation between -40 °C and 120 °C.
[2] 2020: A first implementation is planned to be tested in space in 2021 as part of a prototype fuel depot.
[1][3] A free flying orbital demo was launched in June 2021 to test transfers of high-test peroxide.
[4] In 2024, Orbit Fab announced production ramp up and prices, and that three SpaceForce Tetra 5 satellites would be launched in 2025 with RAFTI interfaces for a refuelling demo in geostationary orbit.