1. External Leakage Eliminated, Internal Leakage Easily Controlled, Safe to Use
Internal and external leakage are factors that endanger safety. Other automatic control valves typically have an extended valve stem, with the valve core's rotation or movement controlled by electric, pneumatic, or hydraulic actuators. This requires solving the problem of external leakage from the dynamic seal of the valve stem during long-term operation. Only solenoid valves use electromagnetic force acting on an iron core sealed within a magnetic sleeve of the electric control valve, eliminating the dynamic seal and thus easily preventing external leakage. Electric valves are difficult to control torque, easily leading to internal leakage, and even breaking the valve stem head; the structure of solenoid valves easily controls internal leakage, reducing it to zero. Therefore, solenoid valves are particularly safe to use, especially suitable for corrosive, toxic, or high/low temperature media.
2. Simple System, Easy Computer Connection, Low Price
Solenoid valves themselves have a simple structure and low price, making them easier to install and maintain than other types of actuators such as control valves. More significantly, the resulting automatic control system is much simpler and cheaper. Because solenoid valves are controlled by on/off signals, they are very easy to connect to industrial control computers. In today's era of widespread computer use and significantly reduced prices, the advantages of solenoid valves are even more pronounced.
3. Rapid Action, Low Power Consumption, and Compact Design
Solenoid valves can have response times as short as a few milliseconds, and even pilot-operated solenoid valves can be controlled within tens of milliseconds. Due to their self-contained circuit, they are more sensitive than other automatic control valves. A well-designed solenoid valve coil consumes very little power, making it an energy-saving product; it can even be designed to automatically maintain the valve position after a trigger action, consuming no power under normal conditions. Solenoid valves are small in size, saving space and offering a compact and aesthetically pleasing design.
4. Limited Adjustment Accuracy and Applicable Media
Solenoid valves typically only have two states: on and off. The valve core can only be in two extreme positions, preventing continuous adjustment and thus limiting adjustment accuracy.
Solenoid valves have high requirements for media cleanliness; media containing particulate matter are unsuitable, and impurities must be filtered out first. Furthermore, viscous media are unsuitable, and certain products have a relatively narrow applicable viscosity range.
5. Diverse Models, Wide Range of Applications
While solenoid valves have inherent limitations, their advantages are still very prominent. Therefore, they are designed in a wide variety of products to meet diverse needs, resulting in extremely wide applications. Advances in solenoid valve technology have all revolved around overcoming these inherent limitations and better leveraging their inherent advantages.
