QT800 quarter-turn actuator is suitable for medium sized butterfly- and- ball valves with an operating torque of 250-800 Nm.. The quarter turn series offers a high level of precision on the control of valves. NAG 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.
184-500ft/lbs (800 Nm max)
Valve Stem Connector**
Butterfly and Ball Valves with partial turn operation
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
Digital: 2x digital input (Open & Close)
3x digital output (Open, Closed & Alarm)
Analog: analog input (set position) analog output (feedback position) digital output (alarm) 4-20 mA AI/AO signal
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.
0.39% / 0.35° & 360° range
USB connection to PC with Eltorque Manager v.3
Open & Closed Postions
Speed, torque, valve postion, valve seat region postion.
Inverted I/O or fieldbus parameters depending on control interface.
Emergency & Safety
Standard fixed hand wheel, mechanical valve-position indicator
Apprx. Number of Turns
Closed - Open
74: 0-100% / 0-90°
Type approved by DNV, GL, CCS, ABS, (Product Design Assessment - PDA), BV, & LR
NAG Marine's mission is to provide best-in-class products and technical representative services to our highly valued customers. We focus on technological solutions to difficult problems in the Fluid Automation and Shipboard Computer markets.
2511 Walmer Ave
Norfolk, Virginia, 23322
United States of America