Found in1926, OKANO VALVE MFG.CO.is the first valve manufacturer in the high pressure and high temperature services. The company has been contributing to the development of thermal and nuclear energy as a pioneer in the valve industry, with the corporate motto “One Step Ahead” . In the atomic power plants in Japan, it is almost a designated supplier of key valves of high temperature and high pressure.

From casting valve to maintenance on site, OKANO satisfies customers by providing higher value-added products, services, technology.

OKANO insists on the sustainable construction of recycling-oriented society, concerned about the "quality" as well as about the "environmental" security. In Japan’s Fukushima nuclear accident, OKANO’s valves wins widespread praise.