The burner body is compact and of mono-block construction incorporating a valve to select air or exhaust gas. Therefore, the whole system can be downsized with a reduction in cost. This product is applicable to compact high-temperature furnaces where the introduction of conventional regenerative systems is difficult. The regenerative media uses an alumina ball that is economical and excellent in heat resistance and corrosion resistance. The product is ideal for forge furnaces, open flame heat treatment furnaces, nonferrous metal melting furnaces, and other high-temperature furnaces that are comparatively compact in capacity. Three models (230-, 465-, and 930-kW models) are available.