Our Top-Entry Valve FullX is THE choice for vacuum-insulated systems. It can be used in a variety of applications offering many advantages. With an optimized combination of the advanced materials and an innovative design of the valve, heat loss and the resulting loss of media is no longer an issue. The purge port is used to purge cryogenic valves. It is particularly important in cryogenic systems to ensure the reliability, safety and durability of a valve, for example in hydrogen technology, aerospace, medical technology or other high-purity gas applications.