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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:

multi turn electric actuator


Suitable for gate valve, globe valve, ball valve, and butterfly valve:

multi turn electric actuated valve
butterfly valve                          ball valve                               knife valve                           gate valve                         globe 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.

multi turn electric actuator

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.

multi turn electric actuators

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