In the tapioca starch manufacturing process, starch losses occur mainly at the centrifugal screen extractors used for removal of fiber and pulp from the starch slurry. The starch-processing plants usually use a two- or three-stage fiber separation screen arrangement of various sizes, i.e., coarse, medium, and fine. A conical screen extractor works by centrifugal force that passes the starch slurry through a filter cloth. One of the studied companies employed a two-stage extraction system, including coarse and fine screens. Each stage contained eight conical screen extractors. The data showed that the company had lost starch in fiber extraction by 30.1 kg/ton starch. The conventional system also required additional fresh water of 2 m3/ton starch for dilution. To reduce the loss of starch and water consumption, the company has replaced four fine-screen extractors with two sets of a vertical screen system. A vertical screen extractor system consists of a vertical screener and high-pressure pump. The system uses the high-pressure pump to filter fine fiber out of the ground cassava mixture. The filtered mixture is then stored in a container prior to pumping to the starch separator for concentration. The vertical screen extractors are highly efficient in terms of water consumption because there is no need for additional water to mix the ground cassava. The company can reduce the water usage of 150,000 m3/ year, which represents the additional water required for the conical screen extractors. Furthermore, a vertical screen system requires less energy consumption since it consists of no moving parts. The starch loss is reduced by 2.5 kg of starch per ton of raw material. The total investment cost was 400,000 baht, while the company has gained 975,000 baht from starch recovery, and water and electricity savings as shown in Table 3. The company has gained profit within 5 months after replacement of a screen system. Note that the savings are compared with the use of four fine-screen conical extractors.