CKQY Gas-over-Oil Actuator is primarily used for the emergency shut-off and line break protection of valves in long-distance oil and gas transmission pipelines. This product extracts gas directly from the pipeline by utilizing pipeline pressure, eliminating the need for any external power supply or other auxiliary power sources. It ensures the rapid shut-off of the gas transmission trunk line in emergency scenarios to safeguard pipeline safety. Nitrogen or compressed air may also be selected as the power source as an alternative.
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CKQY Series
The CKQY Series Gas-over-Oil Actuator is a high-performance valve actuator independently developed by Yangzhou Hengchun Electronics Co., Ltd., a professional China-based manufacturer of industrial actuators. Engineered for the oil and gas industry, this Gas-over-Oil Actuator is dedicated to emergency shut-off and line break protection of valves in long-distance oil and gas transmission pipelines. Its core design feature is extracting gas directly from the pipeline by utilizing pipeline pressure, which eliminates the need for external power supply or auxiliary power sources, ensuring reliable operation in remote and harsh oil and gas field working conditions. The actuator can rapidly shut off the gas transmission trunk line in emergency scenarios to safeguard pipeline safety, and it also supports nitrogen or compressed air as alternative power sources for flexible application in different on-site environments. As a key valve actuator for oil and gas pipeline safety, it perfectly meets the high reliability and emergency response requirements of the industry.
Relying on pipeline pressure for gas supply, the actuator achieves full self-powered operation without external electricity or other auxiliary power. Solving the power supply problem of actuators in remote oil and gas pipeline sections and greatly improving on-site adaptability.
Optimized hydraulic and pneumatic structural design enables fast and precise shut-off of pipeline valves in emergency situations such as line break and abnormal pressure. Effectively preventing oil and gas leakage and reducing safety accident losses.
In addition to pipeline gas, it is compatible with nitrogen and compressed air as alternative power sources. Meeting the customized power supply needs of different oil and gas pipeline stations and construction scenarios.
The integrated hydraulic and pneumatic system has good sealing and pressure resistance. With no oil circuit seepage under normal operation, and the mechanical transmission is smooth without interference, ensuring long-term stable operation under harsh industrial conditions.
Parameter Category | Specific Item | Technical Parameter |
Structure and Vibration Resistance Performance | Overall Structural Design | Anti-vibration structure, integral fixed bracket type |
Vibration Resistance Performance | Frequency range 5Hz～200Hz～5Hz, acceleration 0.75g, meeting sweep frequency requirements | |
Pneumatic Control Module | Design Form | Modular, compact and integrated pneumatic control module, reducing connections and potential leakage risks |
High-pressure Explosion-proof Solenoid Valve | Working Pressure | 1～12 MPa |
Maximum Pressure | 12 MPa | |
Explosion-proof Rating | Exd ⅡCT6 | |
Working Temperature Range | -46℃ ～ +70℃ | |
Manual Operation Components | Manual Pump Type and Maximum Displacement | High-flow manual pump, maximum 70ml per stroke |
Directional Switching Operation | Toggle the buttons on both sides to realize directional switching of valve opening and closing | |
Battery Monitoring System | Design Features | Ultra-low power consumption, dynamic battery capacity monitoring |
Power Supply | Adapt to solar batteries, extend standby time, and ensure continuous operation on rainy days | |
Flameproof Junction Box | Toggle Knob | Magnetic induction mode, enhancing safety; explosion-proof certificate and 3C certificate obtained |
Certification Standard | Complete Machine Certification | SIL3 Certificate, Explosion-proof Certificate and 3C Certificate obtained |
Explosion-proof Solenoid Valve Certification | SIL3 Certificate and Exd ⅡCT6 Explosion-proof Certificate obtained |
Hengchun Actuator adheres to strict quality control throughout the R&D, manufacturing and delivery of the CKQY Series Gas-over-Oil Actuator. As an ISO certified manufacturer, all our actuator products comply with international industrial standards and oil and gas industry explosion-proof requirements. Each Gas-over-Oil Actuator undergoes factory testing including manual operation cycle test, 1MPa pneumatic leakage test, ESD/LBP function verification and oil circuit seepage inspection to ensure zero defective products leaving the factory. The manufacturing workshop adopts professional production equipment and quality inspection instruments, and the core components are strictly selected to ensure the product’s service life and operational reliability in harsh oil and gas pipeline environments.
The CKQY Series Gas-over-Oil Actuator is mainly applied to long-distance oil and gas transmission pipelines, the core safety equipment for on-off control of main line valves, branch valves and station valves in oil and gas transmission projects. It is widely used in onshore oil and gas pipeline networks, natural gas urban gate stations and long-distance oil product transmission pipelines, providing emergency safety protection for pipeline operation. In addition, it can be customized to adapt to the emergency shut-off of key valves in the petrochemical industry with similar pressure and safety requirements, expanding the application scope of the product.
No. The actuator extracts gas directly from the oil and gas pipeline by utilizing pipeline pressure to realize self-powered operation, without the need for external power supply or other auxiliary power sources. Nitrogen or compressed air can also be used as alternative power sources as required.
First, confirm the pipeline pressure is within the design range; then complete the air supply connection and control/feedback signal wiring. Conduct a manual cycle test with a hydraulic hand pump, and a pneumatic test at 1MPa to check air circuit leakage. Verify the accurate trigger of limit switches at valve end positions, and complete parameter setting and function testing for ESD/LBP if equipped. Finally, check the oil circuit for seepage and reset the manual reset valve.
