MKSVC
It is a self‑powered actuator that leverages the pressure of the pipeline’s own medium to drive valve operation, enabling either valve opening or closing. The pneumatic–hydraulic actuator boasts a simple operating principle, safe and reliable control, and strong environmental adaptability, making it well suited to withstand harsh, all‑weather outdoor conditions.
This product directly utilizes pipeline natural gas as its power source. The pneumatic–hydraulic system is designed for high pressure; after filtration and treatment, the gas source requires no pressure reduction and can be fed directly into the gas storage tank and the high‑pressure pneumatic control valve assembly. Under the action of control signals, high‑pressure, controlled gas enters the corresponding gas–liquid circuit. Relying on the principle of isobaric transmission, the liquid medium drives the hydraulic cylinder of the valve actuator in synchronized gas–liquid operation, thereby controlling the valve.
This product directly utilizes pipeline natural gas as its power source. The pneumatic–hydraulic system is designed for high pressure; after filtration and treatment, the gas source requires no pressure reduction and can be fed directly into the gas storage tank and the high‑pressure pneumatic control valve assembly. Under the action of control signals, high‑pressure, controlled gas enters the corresponding gas–liquid circuit. Relying on the principle of isobaric transmission, the liquid medium drives the hydraulic cylinder of the valve actuator in synchronized gas–liquid operation, thereby controlling the valve.
“Pressure is Power” offers a concise and perfect explanation of the operating principle of pneumatic–hydraulic actuators. The gas pressure of pipeline natural gas serves as the driving force that enables the pneumatic–hydraulic actuator to perform control functions and achieve valve switching.
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Electro-hydraulic actuators generally consist of four main components: the actuator itself, the control system, the hydraulic power unit, and the control operating cabinet (control box). Hydraulic system pressures range from low to medium to high: 1.0 MPa, 21.0 MPa, and 35.2 MPa.
Typical Applications:
◆ Local and Remote Control – Emergency Shut-Off Actuators for Pipeline Rupture Detection
This system is designed for use in conjunction with electronic pipeline rupture detection systems, particularly in long-distance oil and gas pipelines where power supply is available but unreliable. By integrating the hydraulic control system with the pipeline rupture detection system, when the rate of pressure drop reaches a preset threshold, the rupture detection system sends a signal to the actuator, which then closes the valve. The combination of an electric hydraulic pump and an accumulator helps reduce the power requirements for the hydraulic actuator.
◆ Local and Remote Control – Electrical Safety in Case of Accidents
During normal operation, the actuator is powered as usual; however, when the system loses power, the valve is automatically closed or opened according to process requirements.
◆ Local and Remote Control – Proportional Control
For applications requiring high precision in flow regulation, a hydraulic proportional control system is selected to adjust the valve.
◆ Local and Remote Control – Servo Control
For processes that demand linear flow control accuracy and strict valve opening/closing positions, a hydraulic servo control system is chosen to regulate the valve.
◆ Solar-Powered Hydraulic Systems
These systems are especially suited for locations lacking reliable power or gas supply, such as long-distance pipelines.
◆ Dual-Speed Slow-Close Control
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Innovatively Designed Fork Box Transmission Housing
This product features built‑in parallel, dual‑guide shafts and is equipped with a modular, block‑based transmission and guidance assembly, representing a comprehensive design innovation across all dimensions.
Traditional fork box transmission mechanisms and component designs are relatively simple, making them prone to severe vibrations during pneumatic or hydraulic operation. As slender piston rods extend and retract, pushing the transmission sliders at the cylinder ends, they often experience plastic deformation and lateral loading issues. Moreover, without fixed guiding blocks and transmission sliders, uneven force distribution can lead to parasitic torque losses—reducing transmission efficiency, compromising the smoothness of the actuator’s output thrust and its motion stability, and even jeopardizing the equipment’s operational reliability and overall safety. At the same time, the conventional connection method between the slider and the hydraulic cylinder significantly diminishes both connection stiffness and assembly efficiency.
To address these challenges, the DG series fork box transmission breaks away from traditional design conventions by incorporating an industry‑first, proprietary, modular transmission structure developed by Microson. This innovative design precisely defines the motion trajectory of the transmission slider, eliminating piston rod deformation at its source and minimizing heat and vibration generation. It also avoids the transmission losses and lateral loading issues inherent in conventional designs, theoretically enabling 100% lossless transfer of thrust output from the hydraulic cylinder (or pneumatic cylinder/spring energy storage), thereby dramatically enhancing transmission efficiency and motion smoothness.
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Contact Us
Address: No. 1093, Middle Section of the Fourth Section, Xihanggang Avenue, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu City, Sichuan Pilot Free Trade Zone, China
Phone:+86-028-85865613
Phone:+86-18382010388
Email:cdmks@mksvc.com.cn
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