a system for treating wire includes an elongated vessel that contains a molten fluid . a pump is disposed in the molten fluid in the vessel . the pump includes an elongated discharge conduit extending for at least a portion of the length of the vessel . conveyance structure enables the wire to be conveyed through the molten fluid . operation of the pump enables a temperature of the molten fluid in the vessel to be changed . the wire is heat treated as a result of passing through the molten fluid .