QT50 is the newest and most compact quarter-turn actuator from Eltorque. It is suitable for a wide range of small butterfly- and ball valves with an operating torque of 10-50 Nm. The QT50 is available with CANbus, Digital, and Analog interfaces.


Min-max torque10 – 50 Nm
Min-max closing time 0-100% / 0-90 5 – 15 sec
Valve spindle adapter11x11mm
Valve flangeF04, F05, F07 (According to ISO5211)
Valve applicationsButterfly or ball valves with the quarter-turn operation.
Example butterfly valves: DN25-DN80.


Weight4,5 kg
Dimensions H/W/D163/118/164 mm
Enclosure protectionIP68 (10m 72hr) – Anodized aluminum and PC+ABS
Operating conditions-25 to +70°C
Not designed for use on open deck of ship, outdoor close to saltwater, or exposure to corrosive chemicals.
Temperature protectionMotor current is switched off in case of over-heating. Stator coils are utilized as heating elements in case of low temperatures.
Datasheet QT50