Kongskilde Rotary Valves, type RF, are suitable for feeding of granulates, (granules, pellets, flakes, small moulded products etc.) either into a pressurised pneumatic conveying line or as a metering feed to a subsequent process. The valves' design ensures minimal pressure losses when introducing products into a pressurised conveying line. The design of the RF version allows it to handle flake materiel such as might come from grinders.