Intelligent Electric Linear Control Valve Actuator
OVERVIEW
This digitally intelligent linear control valve is paired with a smart electric linear actuator and accepts 4-20mA or HART digital signals to precisely regulate the flow, pressure, temperature, and level of process media. It features integrated position feedback, self-calibration, and fault diagnosis capabilities, offering high positioning accuracy and rapid response. Options include various materials and sealing configurations, as well as customization for explosion-proof ratings, colors, ingress protection levels, and low-temperature service. It is widely used in automated process control applications across sectors such as petrochemicals, power generation, district heating, and water treatment.
FEATURES OF ELECTRIC ACTUATORS
1. High-precision regulation: Accepts 4-20mA / HART digital control signals to precisely regulate process parameters such as flow rate, pressure, temperature, and liquid level.
2. Comprehensive intelligent features: Integrates position feedback, self-calibration, and fault alarms; supports on-site manual operation.
3. Stable performance: Compact linear-stroke structure with fast response; positioning accuracy ≤±0.5% FS; stable throttling performance.
4. Diverse material options: Valve bodies available in WCB carbon steel, CF8/CF8M stainless steel, or alloy steel; valve trims made of stainless steel or Stellite hard alloy.
5. Wide application range: Operating temperature range of -40°C to +450°C; suitable for water, steam, oil, gas, and various corrosive media.
6. Highly customizable: Supports explosion-proof modifications, custom exterior colors, upgraded protection ratings, and extended stem designs for low-temperature service; adaptable to harsh environments such as deserts, coastal areas (salt spray), and extreme cold.
7. Standards compliance: Tested in accordance with IEC 60534 and GB/T 4213 standards; base protection rating of IP65; Ex d IIC T6 explosion-proof option available.
PRODUCT ADVANTAGES
Diversified needs
The process technology sites of supporting pipelines and automated valves are all over the world. Not only the site and valve type are important factors in the selection of electric actuators, but also the climate environment of on-site operation is crucial. FRY-A electric actuators guarantee safe and reliable service under various extreme environmental conditions.
Superior performance
Quality Assurance
Only when all on-site equipment provides reliable service throughout its entire life can the entire process site be efficient, economical and safe.
Long warranty period
MAIN FUNCTIONS
Explosion Proof
Based on your specific hazardous area classification and medium type (Group IIA/IIB/IIC gases or dusts), custom-engineer explosion-proof mini‑type electric flanged ball valve consists of an electric actuatorthat fully comply with international and domestic standards, including IECEx, ATEX, and GB 3836.
Colors
You can provide your own color code or choose special coatings for corrosion resistance, weather resistance, or high-temperature warning. Using advanced spraying technology and high-quality coatings, we ensure a durable, uniform finish. This gives your equipment a personalized look while maintaining long-term durability in industrial environments.
Protection grade
Based on your installation environment - outdoor rain, coastal salt spray, desert dust, or food/pharma workshops needing high-pressure washing. We provide sealing solutions from basic dust/water protection (IP65/IP67) to ultra-high protection (IP68/IP69K).
Low-temperature
For the specific operating conditions in extremely cold regions, we offer professional, deeply customized low-temperature environment services for Manual Worm‑gear PTFE‑Lined Butterfly Valve . By employing special low-temperature resistant materials, wide-temperature-range lubricants, and intelligent heat tracing systems, we ensure that the equipment can reliably start and operate accurately even in extremely low-temperature environments. We also comprehensively optimize the cold resistance of seals, electronic components, and display screens to effectively prevent problems such as lubrication freezing, sluggish displays, or start-up failures caused by low temperatures.
CONTROL MODE
External control All actuator signals, such as limit switch signals, torque switch signals, motor thermal protection and valve position, can be transmitted to the external control device for further processing. When designing the control logic architecture, it is necessary to fully consider the necessary protection mechanisms and minimize the delay time.
The contactor device used to control the operation of the motor is installed in the external control device and connected to the actuator via a cable.
When a local control operation interface is required, the local control operation interface should be installed near the actuator and integrated with the external control device.
Integrated control
When the actuator is powered on, the actuator with integrated control unit can be operated by the operating elements of the local control. The control unit is fully adapted to the actuator. The actuator can be set up on site without connecting to the DCS system. Only the transmission and exchange of operating commands and feedback signals are required between the control system and the actuator. The on-off control of the motor is completed instantly in the device.
Fieldbus
The use of bus cables can save a lot of space in the control cabinet, and it is more obvious that the traditional input and output signal line connection is outdated. The use of two-core cables simplifies the commissioning phase and greatly reduces the cost of cables in the long-distance field.
Another major advantage of fieldbus technology is the transmission of preventive maintenance and diagnostic information to the control room. Therefore, fieldbus technology integrates all fieldbus devices into the asset management system to support the safety protection measures of field device utilization. Actuators equipped with intelligent integrated control units can be applied to various common standard types of fieldbus systems in process automation.
Background Art
Currently, electric actuators on the market typically employ standard motors as power components, potentiometers as position-sensing elements, and limit switches to control the zero-point and 100% positions. This structural design inherently precludes intelligent control; it complicates installation and commissioning-requiring professional personnel-and suffers from instability and susceptibility to signal drift in environments subject to vibration.
Domestic products in this sector generally rely on standard motors as the power source for the actuation mechanism but lack the capability for high-precision control. Consequently, valve travel and positioning are managed using a combination of limit switches and position sensors. This approach yields low control accuracy, and the limit switches are prone to loosening under vibration, necessitating professional intervention for maintenance and recalibration.
COMPANY INTRODUCTION
Founded in 2014, Freya mainly deals in valves, actuators, electric valve actuators, electric valves and other fluid control products and services. It focuses on the process industry field and has long been committed to providing professional fluid control solutions for process industries such as electricity, steel, building materials, and water treatment. According to actual working conditions, through necessary field surveying and technical disclosure, it provides customers with safe, economical, and environmentally friendly selection and design, strictly supplies and guides installation and commissioning in accordance with contract requirements, and hands over for use when the standards are met. The company has always focused on improving its innovation capabilities, and has achieved a series of innovative results by increasing R&D investment and introducing technology. In the past few years, the company has successfully applied for non-invasive appearance patents and utility model patent certificates. These innovative achievements have improved the company's core competitiveness.
APPLICATIONS
CERTIFICATES
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