This is an alcohol stove made in Austria. It is that there is a unique fuel opening and shutting valve in a tank. Regards Motoshi.
Hi steve. Yes. Control knob is in the tank like Turm Sport. And, the valve opens if it is turned to the left. Another cap is a cap to put alcohol in. However, there is a little time lag up to the extinction to open and shut the valve at the tank exit. Regards Motoshi.