Cryogenic ball valve is a term of aerospace science and technology published in 2005. With the development of aerospace industry, low-temperature high-energy propellants represented by liquid hydrogen and liquid oxygen have been widely used, and the development of liquid hydrogen and liquid oxygen rocket engines has also achieved great success.
At present, the amount of various cryogenic valves used on a hydrogen-oxygen rocket engine is about X units, and the amount of ground-based hydrogen-oxygen rocket engine test benches is about X units. Among these cryogenic valves, cryogenic ball valves have been greatly developed and applied due to their unique liquid flow and use characteristics.