In the oil and gas, fine chemical, and high-pressure steam industries, valves serve as the final line of defense for systemic safety. When a facility experiences a fire, explosion, or systemic failure leading to a sudden power loss, the risk profile changes instantly. If the electric actuators at critical control nodes cannot drive valves to a predefined safe position (fully open or fully closed) without external power, the consequences can be catastrophic—leading to hazardous media leakage or rapid pressure surges. This "reset failure" is a high-risk liability that must be eliminated through rigorous industrial safety design.
To address the vulnerability of power loss, DCL’s Fail-safe series actuators utilize built-in, long-life energy storage modules that charge automatically while the main power is active. Upon detecting a power interruption, the system immediately switches to backup power mode, driving the actuator to complete its final, mission-critical reset action. In Zone 1 hazardous environments, this reset is executed in strict adherence to Ex db h IIC T4 Gb standards. This ensures that any heat or potential sparks generated by the motor during the emergency movement are confined within the heavy aluminum alloy enclosure. Combined with an IP68 rating, the reset mechanism triggers precisely even in heavy rain, thick smoke, or short-term submersion.
During emergency scenarios, the integrity of electrical isolation determines whether reset signals are executed successfully. DCL actuators provide an exceptional safety margin with an insulating resistance of 100MΩ . This prevents the device from misinterpreting power-off signals under thermal stress or electromagnetic interference. Furthermore, the actuators support a wide operating range from -25℃ to +55℃, guaranteeing the mechanical smoothness of the drive chain under extreme temperature fluctuations. This prevents the mechanical jams often caused by lubricant solidification in cold climates or thinning in extreme heat.
The DCL explosion-proof series is engineered specifically for scenarios with the most stringent safety requirements. By combining ATEX, IECEx, and North American CSA certifications, DCL ensures global project compliance for major petrochemical firms. The ultra-compact design supports 360° universal mounting, allowing for high-performance safety integration even in tight and complex piping environments. With optional Modbus communication for real-time battery health feedback and reset status monitoring, DCL provides a high-compliance, low-maintenance solution that safeguards critical infrastructure during the most unpredictable accident conditions.