Rotary valves are used for pneumatic transport of all types of flour and granules. Blow-through rotary valves comes in three sizes. GB 10/150, GB 19/300 og GB 34/350. They are very useful for transport of sticky materials. Rotary valve housing and end plates are made of cast iron, and the rotor is made of steel S235. Furthermore, the rotary valves are equipped with flange mounted bearings and packing boxes. All GB valves may be ATEX approved to Zone 20.

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