To prevent damage to sensitive granulates, pellets, powders, foodstuffs, and ingredients, a reliable and continuous flow of product from silos, Big Bags or other storage tanks for solids is essential. Blockages and clogging must always be avoided. 

Low-temperature couplings of the TT-series from Walther‑Präzision can be used for cryogenic applications at temperatures down to –200°C and with a working pressure up to 16 bar (230 psi). 

Traditionally, butterfly-valves are often used for rough or fine dosing in processes. To limit the flow, the valve disc is placed in a middle position — but then “bridging” occurs and the product flow stops.

The EBRO Cycle Lock is an alternating-valve system with 2 shut-off valves (butterfly valves) in one line, guaranteeing that one of the two valves is always closed. 

The leak-free quick-couplings with bayonet closure of the CN type from Walther-Präzision are mainly used in the chemical industry for loading and transporting liquids at high flow — for example at loading stations for rail cars or for road tanker transport. 

The knife-gate valve type MV from Stafsjö is used for many applications. The valve has a sliding plate with a beveled edge that cuts effectively through different media. In the closed position, the sliding plate is pressed against the seat — this gives a reliable seal.

Bulk products are often very abrasive, which causes the liner to wear abnormally. When full tightness is crucial, the liner often needs regular replacement.