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QT-250-MIL
NAG-QT250-SS-440-A
The NAG Marine QT250-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 36-185 foot-pounds (250Nm 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-250-MIL
Features
Downloads
+ Technical Specifications
Torque | 36-185 ft/lbs (250 Nm max.) |
Valve Stem Connector | See notes |
Valve Applications | Butterfly & ball valves with partial turn operation (typical) |
Valve Flange | See notes |
Min-Max Closing Time | 0-100% / 0-90° 13-60 sec |
Mechanical | |
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 131°F (-25° to 55°C) |
Over Temp Protection | Motor current turned off |
Under Temp Protection | Stator coils maintain internal temperature |
Electrical | |
Supply Voltage | 110-240V AC (single phase) 50-60Hz or 440-460V AC (3 phase) 50-60hz |
Power Consumption | Max: 240W/560 VA, Standby: 14W |
Connectors | |
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° |
Certifications | |
Shock | MIL-STD-901D (Navy) |
Vibration | MIL-STD-167-1A |
Electromagnetic Interference (EMI) | MIL-STD-461F |
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