Fleyenda QT Series Electric Actuator
The QT Series ON/OFF, Regulating, Intelligent, IP68, EX actuator combines an IP68 and Ex d IIB T4 housing with stable torque output to ensure precise valve control in harsh or hazardous environments, delivering reliable operation supported by its 50–3000 Nm range, ISO 5211 mounting, and 4–20 mA/Modbus compatibility.
Technical Specifications
| Output Torque Range | 50–3000 Nm |
| Rotation Angle | 90° ±5° |
| Ambient Temperature Range | –20°C to +70°C |
| Body Material | Hard-anodized aluminum alloy |
| Connection Standard | ISO 5211 |
| Actuator Type: | ON/OFF, Modulating, Intelligent |
| Voltage Options | AC220V, AC110V, AC380V, DC24V |
| Control Signal Type | Dry Contact, 4–20 mA, 0–10 V, RS485/Modbus |
| Protection Grade | IP68, Ex d IIB T4 (optional) |
| Design Standard | ISO 5211, IEC 60034, IEC 60079 |
| Testing Standard | IEC 60529, EN 61000-6 |
| Certification | CE / RoHS / ISO 9001 / IP65 (Actuator) |
| Customization | Above Are Standard Parameter Samples. If You Have Specific Parameters And Materials, We Can Customize Them All. |
Product Drawings
Comprehensive Technical Drawing (Dimensions & Structure)
Product Benefits & Features
1. Precision Control & Automation Performance
• Stable torque output for accurate valve positioning in electric actuator applications
• Supports ON/OFF, modulating, and intelligent modes for precise valve automation
• Compatible with 4–20 mA, 0–10 V, and RS485 for DCS/PLC control integration
• Intelligent module delivers real-time diagnostics for quarter-turn actuator systems
2. Harsh-Environment Reliability & Safety Protection
• IP68 enclosure for submerged, dusty, and outdoor operations
• Explosion-proof actuator design (Ex d IIB T4) for hazardous industrial zones
• Corrosion-resistant aluminum housing for chemical and marine environments
• Wide temperature range ensures stable performance in extreme climates
3. Installation Flexibility & Compatibility
• ISO 5211 interface fits global valve brands without adaptation
• AC220V, AC110V, AC380V, and DC24V options for diverse power systems
• Compact body suitable for confined installations and underground chambers
• Manual override ensures emergency operation in automated valve systems
4. Operation Stability & Maintenance Efficiency
• High-strength gear system enhances durability for heavy-duty cycles
• Precise position sensing improves modulation accuracy
• Built-in thermal and overload protection prevents motor damage
• Modular internal design simplifies field maintenance for industrial actuators
Why Choose Fleyenda Valve Manufacturing
Product Stability
We use reinforced structures and precision sealing to ensure consistent performance under pressure and temperature changes.
Conpany&Product Certification
We have CE, RoHS, ISO, SIL, TUV, and IP68 waterproof certifications covering safety, quality, and environmental standards.
Projects Experience
Cooperated over 40 countries, we have experience in oil & gas, energy, water, chemicals, food & beverage, and automation.
Customization Capability
With 20 years experience, we turn complex working conditions into precise valve solutions with high speed and accuracy.
Aftersales Support
•We have technical team provides real-time video support to help customers resolve on-site issues quickly.
Customer Cases
Trusted by Shell plc, Petronas, Chevron, TotalEnergies, and Dupont in projects across 40+ countries.
Our Product Actual Export Pictures
FAQs That 80% Users Interest
1. What torque range is recommended when selecting the QT Series ON/OFF, Regulating, Intelligent, IP68, EX for valve automation?
• Choose a torque rating 20–30% above the valve’s operating torque
• The QT Series electric actuator supports 50–3000 Nm for ball and butterfly valves
• Oversizing ensures reliable ON/OFF and modulating operation
2. Is the QT Series ON/OFF, Regulating, Intelligent, IP68, EX suitable for hazardous or explosive areas?
• Ex d IIB T4 construction supports use in chemical, oil & gas, and solvent-handling environments
• The explosion-proof actuator maintains safe operation in Zone 1/Zone 2 locations
• Reinforced housing protects internal components from ignition risk
3. Does the QT Series ON/OFF, Regulating, Intelligent, IP68, EX work with PLC, DCS, and SCADA automation systems?
• Supports 4–20 mA, 0–10 V, dry contact, and RS485/Modbus
• Intelligent module provides real-time diagnostics and valve feedback
• Compatible with global valve control and automation platforms
4. Can the QT Series ON/OFF, Regulating, Intelligent, IP68, EX operate in submerged, outdoor, or corrosive environments?
• IP68 enclosure ensures long-term underwater and outdoor operation
• Aluminum alloy housing resists corrosion in marine and chemical applications
• Designed for harsh conditions in water treatment and coastal facilities
5. What advantages does the intelligent version of the QT Series ON/OFF, Regulating, Intelligent, IP68, EX offer compared with standard ON/OFF actuators?
• Provides position feedback, configuration options, and enhanced control
• Enables predictive maintenance through diagnostic monitoring
• Improves flow regulation accuracy compared with basic modulating actuators