Hopper Loader Vacuum Conveying System is designed to convey dry blend or powder from storage silo or bin to extruder hopper. The Vacuum Conveying System is fitted with anti-dust reverse jet cleaning system for clean healthy environment. The Vacuum Conveying System is equipped with PLC operated electric control panel. Hopper Loader Vacuum Conveying System has a level probe for ensuring the emptiness of material from silo and pneumatically operated feeding valve to feed extruder hopper.