Graphite stopper d=12 mm

This component acts as a precise valve inside the gold melting furnace. It is installed vertically inside the crucible, with its conical or rounded tip resting directly over the bottom discharge hole to prevent metal leakage during the melting cycle. Once the desired temperature is reached and the gold is fully molten, this rod (with a shaft diameter of 12 mm) is lifted upward to start the continuous casting process, and lowered back down to stop the flow.