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Hi, this is the Industrial Control Assistant. Today, I’ll explain the differences between electric control valves and pneumatic control valves. Electric control valves have a basic error rate and sensitivity of 0.3%; they do not require an additional air supply, but they are not suitable for applications with high explosion-proof requirements. The basic error and sensitivity of pneumatic control valves reach 0.5%, and an additional air supply station is required, yet they offer intrinsic safety. Suitable for applications with high explosion-proof requirements. Next, let’s take a detailed look at the features of each one. Electric control valve: An electric control valve consists of an electric actuator and a control valve. 1. It is lightweight and has an attractive appearance. 2. Functionally, it can replace many products with incomplete features, simplifying the design; it addresses the issues of complex factory management, difficult selection processes, and high maintenance requirements. 3. Electric control valves have a large adjustment ratio, generally reaching 100, and can maintain good control performance from 10% to 90% of the opening degree. 4. It features smooth operation and extremely high reliability, addressing the critical structural flaw of excessive leakage in traditional valves. 5. It boasts excellent on-off characteristics with zero leakage, addressing the critical structural flaw of high leakage in traditional valves. 6. Good ability to overcome pressure differences, anti-clogging function, and smooth adjustment. 7. The flow characteristic of the electric control valve is approximately equal percentage. Due to the pressure difference that always exists before and after the valve, the flow characteristics in actual operation cause the actual curve of traditional control valves to distort significantly; however, this effect is relatively minor. As a result, such valves not only possess excellent control performance but also are cost-effective and energy-saving. 8. Compared with pneumatic control valves, electric control valves use a power source that is both convenient and cost-effective, eliminating the various complications associated with setting up a gas supply station. 9. The electric adjustment mechanism features high precision, with a resolution of up to 1/1000, low operating costs, and no need for maintenance. 10. Depending on the actual operating environment, a ceramic-lined ball valve with PTFE lining or a fully ceramic hard-sealed ball valve can be used to achieve higher corrosion and wear resistance. Pneumatic control valve: A pneumatic control valve consists of a pneumatic actuator and a control valve. 1. It features a high-strength aluminum cylinder body that has been finely ground and treated with hard anodizing, ensuring a long service life, a low friction coefficient, and rapid operation. 2. A beautiful, compact, and modern design; a range of product options makes selection more cost-effective. 3. High-quality bearings are used for all moving surfaces, offering low friction, long lifespan, and no noise. 4. Two independent travel adjustment mechanisms are installed externally, facilitating adjustment to the fully open or fully closed position of ±5°. 5. The piston and end caps are made of die-cast aluminum alloy, offering high strength and low weight. 6. By changing the seal, it can be used in high-temperature or low-temperature environments. 7. A variety of angular travel and three-position pneumatic actuators are available as needed. 8. Simple to control and intrinsically safe. No additional explosion-proof measures are required. 9. However, its basic error and sensitivity are too low, which is an area that needs improvement. No more.