Advantages and disadvantages of solenoid valves and electric valves

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Firstly, in terms of classification, solenoid valves include: water solenoid valves, steam solenoid valves, gas solenoid valves, corrosion-resistant solenoid valves, high-temperature and high-pressure solenoid valves, diaphragm solenoid valves, piston solenoid valves, direct-acting solenoid valves, pilot-operated solenoid valves, explosion-proof solenoid valves, and 2/3-way solenoid valves. Electric valves include: electric ball valves, electric butterfly valves, electric gate valves, electric stop valves, and electric control valves. Compared to electric valves, the biggest advantage of solenoid valves is their fast opening and closing speed; the response time is typically around 50 milliseconds, allowing for frequent and rapid on/off operations. For electric valves, the switching time of angle-type actuators is generally around 30 seconds, while that of linear-type or multi-turn actuators is usually around 60 seconds. The speed of opening and closing affects the reliability of the valve’s sealing surface; under identical operating conditions, the sealing surface of solenoid valves is more prone to damage than that of electric valves. In terms of diameter selection, solenoid valves are currently generally available only up to DN300, whereas electric valves can be equipped with larger diameters depending on the required torque and force.