valvomot

Valvomot is a family of compact electromechanical valve actuators that integrate motor and valve components to provide precise, controllable flow in automation systems. The term covers devices that couple an electric motor to a valve stem to modulate opening proportional to a control signal. Valvomots are used where accurate flow control is required in process industries, water treatment, HVAC, and laboratory automation.

Design and construction: A Valvomot unit typically includes a sealed housing, an electric motor (DC or AC), a drive mechanism (linear screw or rotary gear), a valve body (globe, ball, or plug), and feedback sensors such as a position potentiometer or Hall sensor. Many models include integrated electronics for motor control, diagnostics, and fieldbus communication.

Operation: The device accepts a control signal (4-20 mA, 0-10 V, or digital commands) and converts it into a proportional valve opening. Advanced versions support closed-loop control, auto-calibration, and protection features like stall detection and over-temperature shutoff.

Applications: Valvomots are used in process control, water and wastewater treatment, chemical processing, oil and gas instrumentation, food and beverage processing, and building automation. They offer advantages of compact size, reduced installation complexity, and integrated control compared with separate valve and actuator assemblies.

History and development: The concept emerged in the early 2000s as industries sought compact, integrated actuation with built-in diagnostics. Since then, multiple manufacturers have produced various models with differing actuation methods (electric, proportional, stepper) and communications options (Modbus, Profibus, CAN, Ethernet).