coil
The solenoid coil is the starting point of energy conversion in a solenoid valve and a key component determining operational consistency and reliability.
Each switching cycle follows a clear energy conversion process:
Electrical Energy → Magnetic Energy → Mechanical Energy
Electrical current flowing through the coil generates a magnetic field, producing electromagnetic force in the magnetic circuit that drives the armature (valve core) to move and complete the valve’s opening and closing.
The coil’s resistance, number of turns, conductor and insulation system, thermal management, and magnetic circuit matching directly affect electromagnetic force build-up speed, temperature rise, insulation safety margin, and long-term stability.
For high-speed solenoid valves, high-frequency switching produces transient current and thermal stress. Therefore, the coil must provide:
Strong magnetic force · Fast response · Low temperature rise · High insulation safety
Supai has developed a high-performance coil system with high-temperature resistance, high insulation reliability, low power consumption, high-frequency response, and moisture resistance, ensuring stable operation under varying environments and voltage conditions.
1
High-Temperature Coil
Class H (180°C) heat-resistant enameled wire and insulation system, designed for continuous high-temperature operation.
Maintains stable magnetic output, consistent actuation under long-term full load and thermal cycling, with controlled temperature rise.
Strong resistance to thermal aging and heat fatigue, reducing long-term performance degradation and extending service life.
High-Insulation Coil
High-voltage insulation system with optimized structural isolation, providing enhanced electrical safety margins.
Designed to withstand voltage fluctuations, surge conditions, and prolonged energization.
Optimized creepage distances and electrical clearances reduce the risk of insulation breakdown and leakage.
Suitable for applications requiring higher safety standards and operation in complex environments.
Low-Power Energy-Saving Coil
Optimized coil parameters and magnetic circuit matching reduce power consumption while maintaining sufficient driving force.
Lower temperature rise, suitable for high duty-cycle and long-term energized applications.
Reduce system thermal load and improve reliability in densely densely installed valve island or manifold systems.
Can be combined with system control strategies to further improve overall energy efficiency..
High-Frequency Response Coil
Optimized for high-speed switching, enabling faster magnetic flux build-up and rapid response.
Enhanced resistance to thermal cycling and electromagnetic shock, supporting continuous high-frequency operation.
Optimized matching with high-speed armature and valve core systems, improving actuation consistency and repeatability.
Suitable for applications such as high-speed jetting, sorting, dispensing, and pulse control.
Moisture-Proof and Anti-Condensation Coil
Moisture-resistant insulation and sealed encapsulation structure reduce the risk of insulation failure caused by moisture ingress.
Ensures long-term electrical stability in environments with humidity, condensation, and temperature fluctuations.
Enhanced environmental resistance, including salt-spray and oil contamination (depending on material and process selection).
Suitable for high-humidity workshops, outdoor equipment, cooling/condensation environments.
Explosion-Proof Coil
Designed for flammable gas and combustible dust environments, suitable for high-risk operating conditions.
High-strength metal housing and reliable sealing structure enhance mechanical strength and environmental durability.
Flame-retardant, high-insulation encapsulation system maintains safety margins under temperature rise, vibration, and humidity.
Supports standard installation requirements including explosion-proof cable glands and grounding terminals.
PWM Coil Drive and Control System
PWM control enables fast pull-in and low-power holding, balancing response speed and energy efficiency.
The pull-in phase provides enhanced driving force, while the holding phase reduces current, lowering power consumption and temperature rise.
Supports parameterized matching for different coils and valve types, improving system compatibility and consistency.
Optimized for high-frequency and long-duration operation, reducing heat accumulation and extending service life.
Optional integrated protection functions such as overcurrent, short-circuit, and undervoltage protection (configured according to system requirements).
