Airox Nigen Equipments Pvt. Ltd. Manufactures Internal Heater Type Air Dryer. Airox Nigen Equipments Pvt. Ltd. Supplies adsorption based gas generators and air & gas drying equipments. Internal Heater Type Air Dryer is highly efficient and is made up of the best quality equipments and parts. Internal Heater Type Air Dryer is used in instrument, fluid power, and process air applications and can be used intermittently or continuously. These dryers are often used for specialty gas drying including carbon dioxide for beverage production, nitrogen for chemical padding and hydrogen drying. Internally heated regenerative air dryer is the full line industrial duty internally heated regenerative air dryer.