OHQ Series Explosion-Proof Electric Actuator
roduct Overview The OHQ Series Explosion-Proof Electric Actuator is a flameproof (Exd ⅡCT5 Gb certified) quarter-turn actuator designed for hazardous environments (e.g., flammable gas/vapor areas). It controls the 0°~270° rotation of valves (ball valves, butterfly valves, dampers, etc.) and is widely used in petroleum, chemical, water treatment, power plants, shipping, and paper-making industries.
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Product Introduction
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Product Overview
The OHQ Series Explosion-Proof Electric Actuator is a flameproof (Exd ⅡCT5 Gb certified) quarter-turn actuator designed for hazardous environments (e.g., flammable gas/vapor areas). It controls the 0°~270° rotation of valves (ball valves, butterfly valves, dampers, etc.) and is widely used in petroleum, chemical, water treatment, power plants, shipping, and paper-making industries.
Key Features
Explosion-Proof Safety
Certified to Exd ⅡCT5 Gb (suitable for Zone 1/2, IIA/IIC T5 hazardous areas).
Flameproof enclosure prevents ignition of external flammable atmospheres.
Robust Construction
Body: Hard aluminum alloy with anodized & polyester powder coating (corrosion-resistant).
Protection class: IP67 (standard) / IP68 (optional) (water/dust proof).
Precise Control & Flexibility
Torque range: 50–2000 N·m (supports valves up to DN 500).
Rotation angle: 0°–90° (standard) / 110°–270° (customizable).
Control types:
On-Off: Drives valves to fully open/closed positions.
Modulating: Accepts 4–20 mA current / 0–10 V DC voltage signals for proportional positioning.
Intelligent: Equipped with LCD screen & local control panel for on-site monitoring.
Safety & Reliability
Manual override: Handwheel for emergency operation (clutch switches automatically when powered on).
Overload protection: Built-in thermal switch for motor safety.
Self-locking function: Prevents reverse motion via precision worm gear.
Dual limit switches: Mechanical + electronic stops (adjustable for accurate positioning).
Easy Installation
Complies with ISO 5211 / DIN 3337 mounting standards (direct valve connection).
Vertical/horizontal mounting options; stainless steel bolts (anti-drop design).
Technical Specifications
| Parameter | Details |
|---|---|
| Torque Range | 50–2000 N·m |
| Rotation Angle | 0°–90° (standard) / 110°–270° (custom) |
| Ambient Temperature | -20°C ~ +70°C |
| Open/Close Time | 5–40 seconds |
| Power Supply | 24V DC / 110V DC / 110V AC / 220V AC / 380V AC (customizable) |
| Control Signal | 4–20 mA (current) / 0–10 V DC (voltage) |
| Output Drive | Female double square (customizable) |
Certifications
Exd ⅡCT5 Gb (Explosion-Proof)
IP67 / IP68 (Protection)
CE
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