Fujikin has started the first domestic production of valve equipment for rockets fueled by hydrogen about 50 years ago.
Liquid fuel rockets that carries satellites and planetary probes are launched in the space by the mixture and combustion of 253°C liquid hydrogen and 183°C liquid oxygen in the combustion chamber. With a valve which can withstand such ultra low temperature and unique technology, Fujikin contribute greatly to Japan's space development.
Since then, Fujikin has a dominant share of the market in rocket launch complexes and testing facilities such as -253°C liquid hydrogen and 45MPa high pressure hydrogen valve equipment etc.
Fujikin have also develop products for fuel cell Vehicles and hydrogen stations and have top share for hydrogen stations in Japan.
Myths of the danger by hydrogen have been around for many years. People always have impression that hydrogen explodes easily. Although hydrogen is a flammable substance like many other gases, the risks of hydrogen explodes had been greatly reduced as hydrogen technology matures.
When gasoline and LP gas leaks, it spreads and accumulates in the lower side, resulting potential fire hazards.
As hydrogen is the lightest among other gases, hydrogen diffuses into the air quickly during the leakage.
This special characteristic of hydrogen makes it difficult to ignite and even if it ignites, hydrogen will burn longitudinally and will not spread laterally.