QBR Quarter Turn Electric Actuator Product Information
QBR quarter turn electric actuator is one upgrade valve electric actuator of QB part turn electric actuator, which is used normally equipped with 90° turn valves, such as central lined butterfly valve or ball valve. It is die-casting aluminum, which features with small size, light weight, high efficiency, high reliability, high protection class and multi control types. It can be operated on site by manual or electric and remote control. QBR quarter turn electric actuator is used widely in the field of petroleum, chemical, metallurgy, power plant and water treatment. QBR quarter turn electric actuator can be produced according to standard type, integral type, explosion proof type, explosion proof integral type and integral regulating type. Its protection class is normally IP67, and explosion class ExdIIBT4. Flowspec Luokai can produce and supply the QBR quarter turn electric actuator with voltage of AC220V-1Ph-50Hz, AC380V-3Ph-50Hz. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.
1. FEATURES
- Small volume
- Light weight
- High efficiency
- High reliability
- High protection class
- Multi-control types
2. TECHNICAL SPECIFICATIONS
- Model: QBR3, QBR4, QBR5
- Voltage: AC220V-1Ph-50Hz, AC380V-3Ph-50Hz
- Power: 0.25kW ~ 3.0kW
- Protection class: IP67
- Rotary angle: 0 ~ 90°
- Materials: aluminium die-casting
- Explosion class: Ex dII BT4
- Control torque: 900N.m ~ 12000N.m
Why Choose Flowspec Luokai
45+ Years Experience
Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.
Global Certifications
ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.
OEM Custom Solutions
Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.
Worldwide Delivery
Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.
Our Service Promise
Strict Quality Control
Every valve tested to API 598, EN 12266 before shipment
Timely Global Delivery
Reliable logistics to 5 continents with secure packaging
OEM & Custom Design
Tailored material, size, pressure and actuation to your specs
Dedicated After-Sales
Technical support and service throughout product lifecycle


