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QT-800-MIL Electric Valve Actuator

from Eltorque

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The NAG Marine QT800-SS-440-A is an electric valve actuator based on permanent magnet technology. These Navy-type valve actuators feature 440V AC input power, stainless steel housings, and 4-20ma analog interface with local/remote control indication. The NAG Marine QT250-SS-440-A is 100% software configurable with no mechanical adjustment required.


The NAG Marine QT250-SS-440-A is an ideal solution for small to medium sized butterfly and ball valve control requirements with an operating torque range of 184-590 foot-pounds (800Nm max).


NAG Marine QT-MIL 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.


Built to DOD-V-24657 Standards.


About QT-800-MIL



  • 800 Nm max torque
  • Designed for butterfly and ball valves
  • Stainless steel housing
  • Easy installation/retrofit
  • User-configurable torque, closing time, & position
  • Permanently lubricated
  • Low power consumption
  • Manual override


Spec Sheet


  • + Technical Specifications

    Torque 184-590 ft/lbs (800 Nm max.)
    Valve Application Butterfly & ball valves with partial turn operation (typical)
    Dimensions (H x W x D) 9.01 x 6.14 x 8.22-in (229 x 156 x 209-mm)
    Weight 26.5 lbs (12 kg)
    Housing Corrosion proof, Stainless steel
    Operating Temp 13° to 170°F (-10° to 76°C)
    Over Temp Protection Motor current turned off
    Under Temp Protection Stator coils maintain internal temperature
    Supply Voltage 440V AC (3-phase) or
    110-240V AC (50/60Hz)
    Power Consumption Max: 240W/560 VA, Standby: 14W
    Power MIL-DTL-5015 series
    75-474214-02P, 4-pin connector
    Actuator housing includes threaded mounting holes
    Control Interface
    Analog Version Close signal: 20Ma
    Open signal: 4Ma
    Local remote control: Indicator on actual control panel
    Master alarm with current output for control system
    Valve position feedback: isolated 4-20Ma, external 24V DC required
    Local control panel stop button with integrated indicator
    Digital Version Close signal: dry contacts
    Open signal: dry contacts
    Open indicator output: dry contacts
    Close indicator output: dry contacts
    Valve position feedback: isolated 4-20Ma, external 24V DC required
    Valve travel indication: both open and close indicator lights lit during travel
    Local/Remote control: integrated indicator light on actuator
    Local stop button: integrated indicator light on actuator Summary alarm output, dry contacts provided
    Valve Position Sensor Absolute position sensor, provides correct feedback even after power failure
    Resolution 0.39% / 0.35° & 360° range
    Configuration & Set-Up USB connection to PC with software Configuration 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 Standard fixed hand wheel, mechanical valve-position indicator
    Appx. Turns
    21 - 0-100% / 0-90°
    Shock MIL-STD-901D (Navy)
    Vibration MIL-STD-167-1A
    Electromagnetic Interference (EMI) MIL-STD-461F



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