Different types of valves are available according to the use:
| | Industrial hopper - "drawer" system: enables to regulate roughly the flow of product during the drainage. |
| | Hopper with valve: enables to regulate the flow during the drainage. |
| | Hopper with valve directly laid on the discharge spout of the Big Bag: enables the regulation of the flow and to change the Big Bag during the drainage. |
| | Flap valve: locks in the product to avoid pollution, high tightness. |
Further information about Manubag, Folding Manubag, Big Bag as well as Accessoires is available.