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COVNA Liner Knife Gate Valve Multi-turn Electric Actuator
COVNA multi-turn electric actuator, aluminum alloy body construction. Adjustable degree from 0-90 degree. Manual override is available. Torque range is 50Nm to 5000Nm. Nominal voltage : 380V. Motor power: 0.12KW-15KW. Service environment: -40 ℃ – 80 ℃. Maxium diameter of valve stem(mm): 28~80mm. Multi-turn actuators are used for the actuation of valves having linear movement, like gate valves, knife-gate valves, globe valves, diaphragm valves and penstocks
- Model: COVNA-ZD
- Size Range: ZD30 to ZD250
- Pressure Range: 1.0 to 6.4MPa
- Material: Aluminum Alloy
COVNA Multi-Turn Motorized Gate Valve Actuator Features:
- Multi-turn Electric Actuator Torque Range: 50N.m or 5000N.m
- Rugged Type 4X weatherproof aluminum alloy enclosure
- Ambient temperature: -20℃~60℃(special order -60℃~80℃)
- Heavy-duty motor with overload protection
- Relative humidity: 95%(when25℃）
- Power supply: general: single-phase 220V, 3 phase 380V(50Hz), long-distance DC24V; Single phase: 110V, 3 phase 415V, 660V(50Hz, 50Hz)
- Working time: 10 minutes for short time(special order can reach 15-60 minutes)
Multi-turn Actuator Main Techincal Specifications:
| Input Signal | 4mA~20mA, Passive contact |
| Power Supply | Conventional: three-phase, AC380V(50Hz)
Special: Three Phase: AC660V, AC440V, AC415V(50Hz, 60Hz) Simplex: AC220V, AC110V(50Hz, 60Hz) Direct: DC12V, DC24V, DC48V |
| Basic error limit | ≤1% |
| Protection class | IP65, IP68…… |
| Explosion-proof grade | Exdll BT4, Exdll CT4 |
| Ambient temperature | ≤95%（25℃） |
| Environmental humidity | -30℃~+70℃(Optional: -40℃~+100℃) |
| Motor working system | Standard long-term, F-class insulation |
Dimension Of Multi-Turn Electric Actuator:
Suitable for gate valve, globe valve, ball valve, and butterfly valve:
Types of Multi-turn Electric Actuator:
COVNA offers main four types multi-turn actuator in regulation type, on-off type, ordinary type, and explosion-proof type which are waterproof and can be set with manual override. Widely used in power plants, oil & gas field, water treatment plant, chemical, pharmaceuticals, marine ships, etc.
As a +21 years valve manufacturer:
COVNA has rich experience in helping the customer designing & selecting the right actuator and valve whatever used for projects or wholesale or personal.
