Amendment 4.pdf

This solicitation seeks proposals for the design, development, testing, and delivery of fill and drain valves for the Roman Space Telescope. Specifically, Solicitation Number 80GSFC21R0010 was issued by the National Aeronautics and Space Administration Goddard Space Center to procure the Roman Space Telescope Propulsion Fill and Drain Valves. The selected contractor will be responsible for providing valves to fill and drain the propulsion system of the Roman Space Telescope, a future NASA space observatory scheduled to launch in the mid-2020s.