BEST Model TSF twin-screw feeder from Metso is designed for precise batching and weighing applications. The feeder’s dual-helix design combines fast, high-volume filling with accurate dribble flow at the end of the cycle. Its compact design is ideal when limited space prohibits multiple individual screw units. Two helixes — 1½- and 4-inches in diameter — are mounted on an 18-inch by 22-inch hopper. They are rated at 17 cu. ft. and 283 cu. ft. per hour, respectively, at maximum RPM with 100 percent-efficient conveyable product and no slippage. TSF is ideal for batching to weigh-hoppers; low loss-in-weight scale-monitored flow; low loss-of-weight batch applications with scales; drum and pail packout lines; and recipe-type batching by multiple computer-controlled units. Many options are available.