Placed in pneumatic unloading or transfer systems, the in-line Tru-Balance sifter eliminates equipment such as cyclone receivers, airlocks, receiving hoppers and blowers, which often are required. All product contact surfaces are fabricated of stainless steel, and the design is built in two different models to achieve capacities up to 1,000 lbs./min. flour. Both models use a pneumatic sieve compression system to elevate and lower the upper dome assembly. This system provides rapid access for sifter inspection, no heavy domes to lift or hoist, and accelerated sifter closing.