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MT-50 Multi-Turn Marine Electric Valve Actuator

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Featured Specifications:

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

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

Technical Specifications:

Technical Data

Torque*	36-185ft/lbs (250 Nm max)
Valve Stem Connector**	See Notes
Valve Applications	Butterfly and Ball Valves with partial turn operation
Valve Flange**	See Notes
Min-Max Closing Time	0-100% / 0-90° 13-60 sec

*Configurable using Eltorque Manager v.3 - download free at: www.eltorque.no/downloads

**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.

Mechanical

Dimensions (H,W,D)	9.01, 6.14, 8.22 in (229, 156, 209 mm)
Weight	26.5 lbs (12 kg)
Housing	IP68 (continous submersion, 32ft/10m - 72hr) Corrosion resistant aluminum housing
Operating Temperature	-13° to 131°F (-25° to 55°C)
Over Temp. Protection	Current controlled
Under Temp. Protection	Stator coils used as heating element
Finish	Black

Electrical

Supply Voltage	110-240 V AC/DC (50/60 Hz) 440 VAC (60Hz)
Power Consumption	Max: 240W/560 VA

Cables & Cable Glands

Up to five (5) 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 installation manual for specific requirements)
Circular MIL connectors for power/control/configuration

Control

Interface Options	Digital: 2x digital input (Open & Close) 3x digital output (Open, Closed & Alarm) Analog: analog input (set position) analog output (feedback position) digital output (open, closed & alarm) Modbus Fieldbus: Max 31 nodes per/network CANopen Fieldbus: Max. 127 nodes/network, allows positioning and other extended controls.
Network 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 Eltorque Manager v.3
Configurable Parameters	Open & Closed Postions Speed, torque, valve postion, valve seat region postion. Inverted I/O or fieldbus parameters depending on control interface.

Emergency & Safety

Manual Operation	Standard fixed hand wheel, mechanical valve-position indicator
Apprx. Number of Turns Closed - Open	21: 0-100% / 0-90°

Certifications

CE-Marked

Type approved by DNV, GL, CCS, ABS, (Product Design Assessment - PDA), BV, & LR

Attachment	Size
NAG MT-50 (2022 Update) .pdf	183.46 KB

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MT-50 Multi-Turn Marine Electric Valve Actuator

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