There are many uses for restriction orifices in nuclear plants. Their main purpose is to reduce downstream pressure. Depending upon the degree of pressure reduction, single-stage or multi-stage orifices are used. Flow elements are used for precise measurement of flow. Thermon Heating Systems supplies precision machined restriction orifices and flow elements that provide 1% accuracy. These units are manufactured from corrosion and abrasion-resistant material to maintain accuracy for the life of the plant.