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MT-50 Electric Valve Actuator

from Eltorque

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Multi-turn Electric Valve Actuator

NAG Marine MT Series electric valve actuators offer a high level of precision valve control. They are an ideal solution for requirements demanding accurate flow control, easy installation and low cost operation.


NAG Marine MT Series electric valve actuators are designed to be maintenance free, and feature completely enclosed, permanently lubricated transmissions to ensure extended reliable service in the harshest operating conditions.


About MT-50



  • Precise multi-turn control for gate and globe valves
  • 50 Nm max torque
  • IP68 aluminum housing
  • Easy installation/retrofit
  • User-configurable torque, closing time, & position
  • Permanently lubricated
  • Low power consumption
  • Manual emergency override


  • + Technical Specifications

    Torque * 7-37 ft/lbs (50 Nm max.)
    Valve Stem Speed * 7-17 RPM
    Valve Applications ** 2 & 3 inch multi-turn valves (typical)
    Closing Time * 2 inch: 20 seconds; 3 inch: 25 seconds
    Dimensions (H,W,D) 16, 4.5, 9 in (406.4, 114.3, 228.6 mm)
    Weight 33 lbs. (14.9 Kg)
    Housing Corrosion proof, IP68 aluminum housing
    Operating Temp -13° to 131°F (-25° to 55°C)
    Over Temp Protection Current controlled
    Under Temp Protection Stator coils used as heating element
    Finish Black, silver
    Supply Voltage 125-230V DC or 110-240V AC (50/60 Hz)
    Power Consumption Max: 120W/280 VA, Standby: 11W
    Cables & Cable Glands
    Power Up to four (4) M20 cable glands allow for serial connection of power supply and fieldbus wiring
    Actuator housing includes threaded mounting holes
    Use IP68 glands for all wires to maintain IP rating
    Optimized for fieldbus installation (refer to intstallation manual for specific requirements)
    Interface Options Digital:
    2x digital input (open & close)
    3x digital output (open, closed & alarm)
    CANopen Fieldbus: Max. 127 nodes/network - allows positioning & extended control
    Valve Position Sensor Absolute position sensor, provides correct feedback even after power failure
    Resolution 4.85° - Maximum 13 turns
    Configuration & Set-Up USB connection to PC with Eltorque Manager v.3
    Configurable Parameters Valve type
    Open & Closed positions
    Speed, torque, valve position, valve seat region position
    Inverted I/O or fieldbus parameters depending on control interface
    Emergency & Safety
    Manual Operation Ergonomic hand wheel, mechanical valve-position indicator, status LED when actuator is powered
    Safety function disables motor if actuator is operated manually while powered
    Appx. Turns
    2 inch valve - 39
    3 inch valve - 49 4 inch valve - 59
    Markings CE marked
    Approvals Type approved by DNV, GL, CCS, ABS (Product Design Assessment - PDA), BV and LR
    * Configurable using Eltorque Manager v.3 - download free at:
    ** Adapted flange bracket and stem connection is required and must be ordered with the actuator
    Customer must provide a valve/manifold drawing to ensure proper mechanical interfacing.



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