Motor-Operated Valves for Reliable On/Off and Modulating Control
We supply motor-operated valves designed for water treatment, power plants, oil & gas, chemical processing, HVAC, and industrial automation systems.
Motor-operated valves are valves equipped with an electric motor actuator that automatically opens, closes, or regulates the flow of liquids, gases, or steam in a pipeline system.
Compared with manually operated valves, motor-operated valves allow remote control, automated operation, and more consistent flow management. They are widely used in water treatment, power plants, oil & gas, chemical processing, HVAC systems, and industrial automation projects.
Motor-operated valves work by using an electric actuator to convert electrical energy into mechanical motion, allowing the valve to open, close, or regulate flow automatically.
The control system sends an electrical signal to the actuator. Depending on the application, the signal can be simple open/close control or a modulating signal such as 4–20mA or 0–10V.
After receiving the signal, the electric actuator motor begins to rotate. The motor drives a gear mechanism that increases torque and controls the movement speed of the valve stem or shaft.
The actuator transfers torque to the valve stem or shaft. For rotary valves such as ball valves and butterfly valves, the shaft turns 90 degrees. For linear valves such as gate or globe valves, the stem moves up and down.
As the valve disc, ball, gate, or plug changes position, the flow path is opened, closed, or partially adjusted. This allows the system to control liquid, gas, or steam flow without manual operation.
The electric actuator is the key component of a motor-operated valve. It provides the torque required to move the valve and controls the valve position according to signals from the control system.
On/Off Electric Actuator
Modulating Electric ActuatorOur motor-operated valves are available in ball valve, butterfly valve, globe valve, gate valve, and knife gate valve designs. Each valve type is suitable for different flow control requirements, media conditions, and installation environments.
Motor-operated ball valves are ideal for fast on/off control and reliable shutoff in water, gas, oil, and general industrial pipelines.
Best for: quick isolation, tight sealing, compact pipeline systems.
View Motor-Operated Ball Valves
Motor-operated butterfly valves are suitable for large-diameter pipelines, water treatment, HVAC, cooling water, and low to medium pressure systems.
Best for: large flow capacity, compact structure, cost-effective automation.
View Motor-Operated Butterfly Valves
Motor-operated globe valves are designed for flow regulation, throttling service, steam systems, and process control applications.
Best for: modulating control, precise adjustment, process flow regulation.
View Motor-Operated Globe Valves
Motor-operated gate valves are used for full-open or full-close pipeline isolation where low pressure drop and straight-through flow are required.
Best for: full-bore isolation, low flow resistance, main pipeline shutoff.
View Motor-Operated Gate Valves
Motor-operated knife gate valves are suitable for wastewater, slurry, pulp, mining, and media containing suspended solids.
Best for: slurry handling, wastewater, pulp, mining, and solids-containing media.
View Motor-Operated Knife Gate ValvesMotor-operated valves are widely used in automated flow control systems where remote operation, stable shutoff, and reliable process control are required. Different valve types can be selected according to the medium, pressure, temperature, and control requirements.
In water treatment plants, motor-operated valves are used for automatic flow control in raw water intake, filtration systems, sedimentation tanks, pumping stations, backwash lines, and wastewater discharge systems.
Common options include motor-operated butterfly valves, gate valves, and knife gate valves.
Motor-operated valves help control cooling water, boiler feedwater, condensate, steam auxiliary lines, and circulating water systems in thermal power plants, hydropower stations, and industrial energy facilities.
Common options include motor-operated gate valves, globe valves, and butterfly valves.
In oil and gas systems, motor-operated valves provide remote pipeline isolation, tank farm control, pump station automation, loading and unloading control, and emergency shutoff for process pipelines.
Common options include motor-operated ball valves, gate valves, and globe valves.
Chemical plants require reliable valve automation for acids, alkalis, solvents, corrosive fluids, and process media. Motor-operated valves can be supplied with suitable body materials, sealing materials, and actuator protection levels.
Common options include stainless steel ball valves, globe valves, and butterfly valves.
Motor-operated valves are used in chilled water, heating water, cooling water, air handling units, boiler systems, and building management systems to support automatic temperature and flow control.
Common options include motor-operated butterfly valves, ball valves, and control valves.
For media containing suspended solids, slurry, pulp, or wastewater sludge, motor-operated knife gate valves are commonly used to provide reliable shutoff and automated operation in demanding working environments.
Common options include motor-operated knife gate valves and heavy-duty gate valves.
Our motor-operated valves can be equipped with reliable electric actuators for outdoor installation, hazardous areas, and critical process control systems. These actuator options help improve waterproof performance, operating safety, and system protection during power failure.
Request Actuator OptionsIP68-rated electric actuators are available for outdoor, humid, dusty, or temporarily submerged environments. They help protect the actuator from water ingress and support stable operation in demanding site conditions.
Explosion-proof electric actuators are available for hazardous areas such as oil & gas, chemical plants, fuel storage, and industrial environments where flammable gases or vapors may be present.
The power-off reset function allows the valve to automatically return to a preset safe position when power is lost. The valve can be configured to fail open, fail close, or return to a required safety position.
