INDUSTRIAL VALVE ELECTRIC ACTUATION SYSTEMS

Bernard Controls Electric Actuators

We supply genuine Bernard Controls industrial valve actuators: quarter-turn SQ Series, multi-turn ST Series, intelligent INTELLI+ systems, AQ, OA and explosion-proof STX/SQX units directly from verified global manufacturing networks.

Bernard Controls Electric Actuators Range

Select an actuation series or send your valve technical requirements for engineering review and selection.

Quarter-turn electric actuators SQ and SQX Series

Industrial quarter-turn electric actuators Bernard Controls Series SQ and explosion-proof SQX are engineered for the automation of butterfly valves, ball valves and dampers.

The equipment delivers an output torque range from 45 to 10,000 Nm directly and up to 100,000 Nm when coupled with secondary quarter-turn gearboxes. The design provides IP68 enclosure protection and ISO 5211 mounting flanges.

Specification parameters: required torque (Nm), valve size, power supply voltage and control type (On-Off / Modulating).

Multi-turn electric actuators ST and STX Series

Multi-turn electric actuators Bernard Controls Series ST and explosion-proof STX are utilized for controlling wedge gate valves, parallel slide gate valves, knife gate valves and globe regulating valves.

The actuators deliver direct torque from 25 to 2,200 Nm and up to 20,000 Nm when combined with bevel or spur gearboxes. Output drive sockets comply with ISO 5210 standard.

Specification parameters: torque rating, output speed (RPM), stem thread dimensions and seating thrust.

INTELLI+® Intelligent actuation and control systems

The INTELLI+® intelligent control platform integrates into SQ and ST actuators, featuring a multilingual LCD screen, battery-free optical absolute encoders and non-intrusive end-position setup.

It supports industrial fieldbus protocols including Profibus DP, Modbus RTU, Foundation Fieldbus and HART, alongside continuous torque profiling and diagnostics.

Specification parameters: fieldbus protocol, emergency shutdown (ESD) logic and digital I/O configuration.

Compact quarter-turn actuators AQ and AQL Series

First BC line quarter-turn actuators Series AQ and AQL are engineered for water treatment facilities, HVAC systems, boiler rooms and general industrial piping.

The equipment delivers output torques from 50 to 1,000 Nm within a compact footprint, featuring a corrosion-resistant coated aluminum housing and integral thermal motor protection.

Specification parameters: model size (AQ5 through AQ100), voltage supply (230V/400V/24V DC) and operating speed.

Direct mount compact actuators OA6, OA8 and OA15

Compact electric actuators Series OA (OA6, OA8, OA15) provide direct ISO 5211 mounting on DN40–DN150 butterfly valves and ball valves across heating networks and process systems.

The actuators generate torques from 60 to 150 Nm, featuring an optical position indicator dome and manual override handwheel.

Specification parameters: actuator model (OA6/OA8/OA15), supply voltage and valve stem drive bore.

Heavy-duty multi-turn actuators ASM and ASM16 Series

Industrial electric actuators Series ASM and ASM16 are engineered for severe operating environments in power generation, metallurgy and petrochemical refining.

The equipment provides output torque up to 1,600 Nm, rated for S4 intermittent duty with up to 1,200 starts per hour, equipped with mechanical differential torque sensing.

Specification parameters: torque requirement, hourly starts rating, control duty and mounting base type.

Explosion-proof electric actuators SQX, STX and FQX

Explosion-proof electric actuators Series SQX, STX and FQX are certified under ATEX, IECEx and TR CU 012/2011 standards for hazardous Zone 1/2 (gas) and Zone 21/22 (dust) environments.

Units feature heavy-duty flameproof Ex d IIC T4 enclosures, double-sealed terminal compartments and intrinsically safe control circuits.

Specification parameters: hazardous area zone, gas group (IIB/IIC), temperature class (T4/T5) and valve type.

Linear thrust electric actuators SL, SLX and LE Series

Linear electric actuators Bernard Controls Series SL, SLX and LE are engineered to automate globe regulating valves across steam lines, heat exchangers and process chemical reactors.

Actuators produce linear thrust from 5 to 100 kN with stroke lengths up to 120 mm and high-resolution continuous positioning.

Specification parameters: rated linear thrust (kN), stroke length (mm), stroking speed and valve yoke type.

Identify Bernard Controls actuator model and configuration

Bernard Controls manufactures a comprehensive range of modular electric actuators; industrial Series SQ, ST, AQ and INTELLI+ differ in gearbox sizing, motor ratings and control electronics.

To ensure correct selection, record the complete model designation (such as SQ60 or ST14) and serial number (Serial No.) from the nameplate. Specifying only the series name leaves torque ratings, stroke timing and voltage options undetermined.

If the nameplate is damaged, provide photographs of the actuator housing, terminal compartment and valve mounting flange.

SQ Series quarter-turn actuators for butterfly and ball valves

SQ Series and explosion-proof SQX quarter-turn electric actuators are engineered for 90-degree rotary valves including butterfly valves, ball valves and dampers. The units deliver torque from 45 to 10,000 Nm directly and up to 100,000 Nm with secondary quarter-turn gearboxes.

Features include a self-locking worm gear drive preventing back-drive under process pressure, mechanical travel stops adjustable by ±5°, and ISO 5211 mounting flanges (F05 through F30). Specify required operating torque, stroking speed and valve stem dimensions.

ST Series multi-turn actuators for gate and globe valves

ST Series and explosion-proof STX multi-turn actuators operate wedge gate valves, parallel slide gates, knife gates and globe regulating valves. Actuators provide direct torque from 25 to 2,200 Nm and up to 20,000 Nm paired with bevel or spur gearboxes.

Output drive sleeves comply with ISO 5210 standard (Types A, B1, B2, C, D). Adjustable torque limiters with independent opening and closing calibration protect valve stems from thermal expansion stresses and mechanical overload.

INTELLI+® intelligent actuation platform and fieldbus integration

The integrated INTELLI+® control system features a multilingual graphical LCD screen and non-intrusive configuration of end limits and torque settings without opening the flameproof housing.

Operating with battery-free optical absolute encoders, the platform maintains valve position tracking through complete power interruptions.

INTELLI+ supports native fieldbus interfaces including Profibus DP, Modbus RTU, Foundation Fieldbus and HART, while logging event histories and torque profiles for predictive maintenance.

First BC AQ Series compact actuators for HVAC and water treatment

The First BC line Series AQ and AQL quarter-turn actuators are tailored for municipal water treatment, wastewater, boiler plants and HVAC installations. Actuators deliver torques from 50 to 1,000 Nm in a lightweight, compact footprint.

Corrosion-resistant C4/C5 epoxy-coated aluminum enclosures house self-locking gear trains. Power supply configurations include single-phase 230V, three-phase 400V AC and 24V DC options.

OA Series direct-mount compact actuators (OA6, OA8, OA15)

OA Series quarter-turn actuators (OA6, OA8, OA15) offer direct ISO 5211 mounting on small-to-medium DN40–DN150 butterfly and ball valves.

Delivering 60, 80 and 150 Nm of torque, units include a dome-style optical position indicator and an integrated manual handwheel override with automatic motor declutching. Standard ISO 5211 F05/F07 flanges with removable drive inserts enable swift installation without mounting brackets.

Heavy-duty ASM Series multi-turn actuators for power plants

Heavy-duty ASM and ASM16 industrial actuators are built for arduous duties in power generation, steel mills and petrochemical facilities. Designed for S4 intermittent service with up to 1,200 starts per hour, units deliver direct output torques up to 1,600 Nm.

A mechanical differential torque sensor continuously tracks thrust loads, preventing mechanical failure if foreign debris lodges in the valve seat.

Explosion-proof STX and SQX actuators (ATEX / IECEx certified)

Bernard Controls explosion-proof actuators are certified for hazardous Zone 1, 2, 21 and 22 environments under ATEX, IECEx and TR CU 012/2011 standards with Ex d IIB/IIC T4 Gb / Ex tb IIIC T135°C Db ratings.

Heavy-duty cast iron or aluminum enclosures incorporate double-sealed terminal compartments and intrinsically safe control circuits, operating reliably across an ambient temperature envelope from -60°C to +70°C.

SL Series linear actuators for globe and control valves

Linear thrust electric actuators Series SL, SLX and LE automate globe regulating valves across district heating substations, steam networks and process reactors. Units exert linear thrust from 5 to 100 kN with stroke lengths up to 120 mm.

Precision lead screws paired with integrated linear LVDT position feedback guarantee continuous positioning resolution down to 0.1 mm for tight process flow control.

Specification review and international supply terms

Confirm the complete actuator specification: actuator model size, power supply voltage, control logic, ISO mounting interface, and required adapter drive inserts or cable glands. Provide valve mechanical data and process operating conditions.

Technical compatibility is verified during quotation review; pricing, lead times and global logistics arrangements are detailed in our formal commercial proposal.

Supply terms and global logistics

We supply genuine Bernard Controls electric actuators, control modules and components for power generation, oil and gas, metallurgy and municipal water utilities. Payment via bank transfer against formal commercial quotations with full technical documentation and certification.

Professional international shipping with reinforced protective packaging.