The patented NARVA vacuum tube is made of special glass from the own glassworks. It is characterized by a high degree of efficiency, robustness and durability.
The vacuum tubes are delivered to collector manufacturers and are used in plants for production and preparation of hot water. Further to this they are also used for environmentally friendly heating and cooling processes in public facilities as well as in private households.
Flyer Vacuum tubes, NARVA Lichtquellen GmbH & Co.KG