List of products by brand Bernard Controls

Bernard Controls – Technical profile of an electric actuator manufacturer for industrial valves

Bernard Controls is a French manufacturer of electric actuators for industrial valves and dampers. Its actuators are used on quarter-turn, multi-turn and linear valve applications in water, power, oil & gas, nuclear, marine, chemical, HVAC and industrial process systems.

The main product areas include:

• quarter-turn electric actuators,
• multi-turn electric actuators,
• linear actuators,
• explosion-proof actuators,
• failsafe actuators,
• control and modulating actuators,
• fieldbus-enabled actuator systems,
• local control units and accessories.

Quarter-turn actuators are used on butterfly valves, ball valves and plug valves. Multi-turn actuators are used on gate valves, globe valves and sluice gates. Linear actuators are used when direct linear thrust is required.

Actuator sizing must be based on valve torque or thrust. Required data include valve type, break torque, seating torque, pressure differential, stem dimensions, number of turns, travel time, safety factor, supply voltage and control signal.

Modulating service requires higher duty cycle and better positioning accuracy than simple On/Off service. The actuator must be checked for control frequency, motor heating, gearbox rating, feedback signal and process dynamics.

Explosion-proof actuators must be selected according to hazardous area classification, gas group, dust group, temperature class and ambient temperature.

Bernard Controls products are relevant for valve application engineers, automation engineers, power plant engineers and water infrastructure teams. The actuator must be specified together with the valve, control system, power supply and operating philosophy.