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Final Control Element. FCE may be referred as actuator such as valve, gate, motor or relay. It enables an operator of a plant to achieve a desired process variable
The most common FCE in industrial control system is control valve which is used to control fluid flow in pipeline. In petrochemical industry, control valve has known on its well performance in adjust the flow of the fluid in the production process. Energy costs is the major operating expense in petrochemical plants, so, poor valve control can lead to low plant profits. Therefore, valves such as gate valve with electric actuator and that with manual actuator, gate valve with pneumatic membrane actuator and pressure relief valve play an important role in ensure the optimum process conditions is achieved during the benzene distillation.
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For example, the ignition temperature of PVC is as high as 455°C, and is a material with less risk for fire incidents since it is not ignited easily. Furthermore, the heat released in burning is considerably lower with PVC, when compared with those for PE and PP. PVC therefore contributes much less to spreading fire to nearby materials even while burning. Durability Under normal conditions of use, the factor most strongly influencing the durability of a material is resistance to oxidation by atmospheric oxygen.
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