QT-250 Quarter-Turn Marine Electric Valve Actuator

Product Overview

Easy-Install, User-Configurable Electric Quarter-Turn Valve Actuator for Butterfly & Ball Valves

The QT-250 is suitable for a wide range of small to medium sized butterfly and ball valves with an operating torque of 50-250 Nm. The Quarter-Turn Series offers a high level of precision on the control of valves.

NAG Marine has designed our Electric Valve Actuators to be maintenance-free and feature completely enclosed, permanently lubricated transmissions to ensure extended reliable service in the harshest operating conditions.

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Features Technical Specs View Datasheet Get Support

Features

Precise quarter-turn control
250 Nm max torque
Designed for butterfly and ball valves
IP68 aluminum housing (stainless steel available)
Easy installation/retrofit
User-configurable torque, closing time
Permanently lubricated
Low power consumption
Manual emergency override

Technical Specs

Technical Data
Torque*	36-185ft/lbs (250 Nm max)
Valve Stem Connector**	Valve Spindle Adaptor. SQ17, 38mm depth.
Valve Applications	Butterfly and Ball Valves with partial turn operation
Valve Flange	F04, F05, F07. According to ISO5211.
Min-Max Closing Time	0-100% / 0-90° 13-60 sec
*Configurable using Eltorque Manager - download free at: www.eltorque.no/downloads
Mechanical
Dimensions (H, W, D)	9.01, 6.14, 8.22 in (229, 156, 209 mm)
Weight	26.5 lbs (12 kg)
Housing	IP68 (continuous 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)
Power Consumption	Max: 240 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 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
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

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QT-250 Quarter-Turn Marine Electric Valve Actuator

Product Overview

Easy-Install, User-Configurable Electric Quarter-Turn Valve Actuator for Butterfly & Ball Valves

QT-250 Electric Quarter-Turn Valve Actuator Datasheet

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