Quarter-turn Electric Valve Actuator
NAG Marine QT Series electric valve actuators offer a high level of precision valve control. They are an ideal solution for small to medium sized butterfly and ball valve control requirements with an operating torque range of 184-590 foot-pounds.
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.
+ Technical Specifications
|Torque *||185-500ft/lbs (250-800 Nm max.)|
|Valve Stem Connector **||See notes|
|Valve Applications **||Butterfly & ball valves with partial turn operation (typical)|
|Valve Flange **||See notes|
|Dimensions (H,W,D)||12.9, 7.5, 9.45 in (330, 190, 240 mm)|
|Weight||46 lbs (21 kg)|
|Housing||IP68 (continuous submersion, 32 ft / 10 m - 72 hrs)
corrosion resistant 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|
|Supply Voltage||110-240V AC/DC (50/60 Hz)
440V AC (60Hz)
|Power Consumption||Max: 200 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 intstallation manual for specific requirements)
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||0.39% / 0.35° & 360° range|
|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||Standard fixed hand wheel, mechanical valve-position indicator
||21 - 0-100% / 0-90°
|Approvals||Type approved by DNV, GL, CCS, ABS (Product Design Assessment - PDA), BV and LR|
|Electromagnetic Interference (EMI)||Built to meet or exceed MIL-STD-461E|
|Type Approvals||DNV, GL, CCS, ABS, (Product Design Assesment-PDA), BV & LR
|*||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.
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