Volumetric feeder provides low cost and easy option in batch or continuous applications, especially when the bulk density of the fed material is consistent or when precise feed accuracy is not so important for the quality of end product. Frequently volumtric feeder is used in gain-in-weight batch application since higher accuracy can be achieved. When process requirement is more demanding, volumtric feeder with gravimetric scale and loss-in-weight control can be used. Our volumetric feeder can provide reliable and stable performance. Single screw feeder is the best choice for free flowing materials, while twin screw feeder is the the best solution for difficult-handled materials. We have a full range of volumetic feeders with a number of models and different-sized hoppers to meet your specified requirements. Twin-screw volumetric feeder is applied to provice accurate volumetric feeding for poor flowing powder, fiber and flake materials. All parts which contact fed material are made of stainless steel. It is esay to disassembled for cleaning or changing parts. The special bowl-shaped hopper makes material flow from all directions into the screw evenly. It can also avoids material build-up and make feeding more accurate. Two types of hopper, symmetrical or asymetrical, can be chosen. The standard construction material of hopper is SS304. SS316 and SS316L are optional to be used. For poor flowing materials which tends towards bridging, a vertical agitator is optional to add. For different environments, different construction materials of screw can be used. The screw materials can be SS304, SS316L, copper, carbon steel and Hartz alloy. For different fed materials, different twin-screw types can be chosen.