Stainless steel circular hopper in rectangular mild steel support frame. The hopper is 2.1 metres diameter with a 500 mm vertical section and an 800 mm deep cone terminating with a 250 mm diameter electro pneumatic butterfly valve. 800 mm below the valve there is an electro pneumatic inflating sealing ring. Working hopper volume is about 2 M3. This hopper was filling big bags. Comes with legs that lift it an additional 1.5m so there is room for big bags to be filled. 3 phase, 11kw motor drive blades inside the hopper to ease flow and mix.