◆Added a hose to recycle airflow to be more environmentally-friendly.◆Features internal circulation of hot air to reduce heat lost.◆Concentrated thermal energy rapidly expels moisture.◆Confined drying chamber with filter can avoid overheat and air pollution.◆Special filter can withstand high temperature.WORKING PRINCIPLEHeater element and blower provide hot air to remove moist from materials, and then the moist is recycled by collector. The collector filters dust in hot moist air and later the moist air is discharged. The clean hot air is blown back to the dryer for another cycle.Recycle Hose SpecificationsModelCompatible Hopper Dryer Model (mm)HoseDiameterEP-2525EΦ63.5EP-10050E-100EΦ63.5EP-200150E-200EΦ101.6EP-400300E-400EΦ101.6EP-600600EΦ101.6Economical Dryer Type: WSDJ-25、WSDJ-50、WSDJ-100.Economical dryer is used for drying general plastic materials. It is simple in construction and easy to operate.Models WSDJ-25, WSDJ-50 and WSDJ-100 are available.