COVNA Series Quarter Turn Electric Actuator

Features of COVNA series quarter-turn rotary electric actuator including compact design with efficient performance and torque up to 4000Nm. Own unique design to reduce the failure rate. Overloading protection, and self-lock to keep your valve and project safe.
COVNA have 22 years of experience in quarter-turn rotary electric actuator and we are committed to helping you select the right actuator for your project and help your project run well. Inquiry us to get a free actuator solution!

Model

  • Actuator Type: ON/OFF Type, Modulating Type & Intelligent Type
  • Torque Range: 50Nm to 4000Nm
  • Voltage: DC-12V, 24V; AC-24V, 110V, 220V, 380V
  • Signal Control: 4-20mA, 1-5V, 0-10V DC
  • Ambient Temperature: -4°F to 149°F
  • Protection Class: IP65/67

Benefits Of Quarter-Turn Electric Actuators:

COVNA Quarter-turn automatic electric actuator driven by AC/DC power supply, and it could feedback or receive the signal to help to control the valve remotely. To help you save the time of operating the valve. Including ON/OFF type, modulating type and intelligent type actuator to offer the flexible fluid control solution for you.

Suitable for the ball valve and butterfly valve.

If you are looking for an electric valve actuator manufacturer, you are in the right place. COVNA is an electric valve actuator manufacturer in China. Manufacturing3 types of quarter-turn electric actuators for your actuation solutions like ON/OFF typeModulating type and Intelligent type. 90-degree rotary and direct ISO5211 mounting for ball and butterfly valve. Multiple control methods for your choice to meet the requirement of your application.

If you have any demand for electric actuator or wanna get a free actuator solution, please contact us [email protected]

Types Of COVNA Electric Valve Actuators

COVNA provides a part-turn motorized valve actuator in ON/OFF type, modulating type and intelligent type to allow your automation easier.

quarter-turn-electric-actuator

On/Off Type Quarter-turn Electric Actuator

Features include 90-degree rotary, easy to install and maintenance. Metal gear with features of a long service lifespan. Long working time up to 99 hours. Manual override, signal control, AC/DC power supply are available. ISO5211 mounting for ball valves and butterfly valves.

Actuator Type On Off Type Electric Actuator
Torque Range 50Nm to 4000Nm
Rotation 90 Degrees
Voltage DC-12V,24V; AC-24V,110V,220V,380V
Input/Output Signals 4-20mA, 1-5VDC, 0-10VDC
Mounting Standard ISO5211
Protection Class IP67 Weather-proof
Environment Temperature -30℃ to 60℃ (-22℉ to 140℉)
Function For 90 degrees fully open and fully close
quarter-turn-electric-actuator

Modulating Type Electric Valve Actuator

Advantages of modulating type electric valve actuator including adjustable switch angle from 0 degrees to 90 degrees with high control performance, low failure rate, overloading protection and weatherproof protection class for outdoor uses. You could set the switch angle you need to help you flow control easier. Good choice for automation solutions.

Actuator Type Modulating Type Electric Actuator
Torque Range 50Nm to 4000Nm
Adjustable Angle Range 0 Degrees to 90 Degrees
Voltage DC-12V,24V; AC-24V,110V,220V,380V
Input/Output Signals 4-20mA, 1-5VDC, 0-10VDC
Mounting Standard ISO5211
Protection Class IP67 Weather-proof
Environment Temperature -30℃ to 60℃ (-22℉ to 140℉)
Function Adjusting the opening and closing angle of the valve for flow control
quarter-turn-electric-actuator

Intelligent Type Electric Valve Actuator

Advantages of Intelligent type electric valve actuator including LCD display screen to let you check the switch angle easily, multiple control methods for your choice, ISO5211 direct mounting for ball and butterfly valve. Easy to adjust the switch angle and easy to check the valve situation.

Actuator Type Intelligent Type Electric Actuator
Torque Range 50Nm to 4000Nm
Adjustable Angle Range 0 Degrees to 90 Degrees
Voltage DC-12V,24V; AC-24V,110V,220V,380V
Signal 4-20mA, 1-5VDC, 0-10VDC
Mounting ISO5211
Protection Class IP67 Weather-proof
Environment Temperature -30℃ to 60℃ (-22℉ to 140℉)
Functions The same function as the modulating type but it has an LCD display screen

Technical Parameters Of Quarter Turn Electric Actuators

Model 5 10 16 30 60 125 250 400
Torque Output 50Nm 100Nm 160Nm 300Nm 600Nm 1250Nm 2500Nm 4000Nm
90°Cycle Time 20s/60s 15s/30s/60s 30s/60s 100s 100s 100s
Angle of Rotation 0-90° 0-90° 0-90° 0-90° 0-90° 0-90° 0-90° 0-90°
Working Current 0.25A 0.48A 0.68A 0.8A 1.2A 2A 2A 2.7A
Starting Current 0.25A 0.48A 0.72A 0.86A 1.38A 2.3A 2.3A 3A
Drive Motor 10W/F 25W/F 30W/F 40W/F 90W/F 100W/F 120W/F 140W/F
Product Weight 3kg 5kg 5.5kg 8kg 8.5kg 15kg 15.5kg 16kg
Voltage Option AC 110V, AC 220V, AC 380V, DC 12V, DC 24V
Insulation Resistance DC24V:100MΩ/250V; AC110/220V/380V: 100MΩ/500V
Withstand Voltage DC24V:500V; AC110/220V:1500V; AC380V:1800V 1Minute
Protection Class IP65
Installation Angle Any
Electrical Connection G1/2 Water-proof Gable Connectors, Electric Power Wire, Signal Wire
Ambient Temp. -30℃to 60℃
Control Circuit A: ON/OFF type with light indicator signal feedback
B: ON/OFF type with passive contact signal feedback
C: ON/OFF type with resistance potentiometer signal feedback
D: ON/OFF type with resistance potentiometer and neutral position signal feedback
E: Regulation type with a servo control module
F: DC24V/DC12V direct ON/OFF type
G: AC380V three-phase power supply with passive signal feedback
H: AC380V three-phase power supply with resistance potentiometer signal feedback
Optional Function Over Torque protectors, dehumidify heater, stainless steel coupling & yoke
covna-quarter-turn-electric-actuator

Advantages Of COVNA Electric Valve Actuators

1. Self-lock and overloading protection to keep your valve and pipeline safe

2. Multiple control methods including manual override, signal control, AC/DC power supply to allow you flow control remotely

3. 90 degrees rotations and ISO5211 direct mounting for ball and butterfly valve

4. Quality and heavy-duty motor, compact design with high torque up to 4000Nm to ensure the valve open/close fully

5. Rugged polyester powder-coated aluminum enclosure for outdoor uses

6. Our circuit boards in the actuator are sealant coated to avoid humidity and short circuit

Why Choose COVNA Electric Actuators

1. 1 Year warranty of all electric actuators

2. Hugh stock and fast shipping with individual package

3. Each actuator will be 100% inspected before shipping to ensure the product quality for your project

4. We also offer OEM service. We can laser your logo on the actuator shell to help your business grows

5. Combined with German technology research and development, it reduces the failure rate, prolongs the service life and improves the cost performance.

1.Oil and Gas Industry

Pipeline Flow and Pressure Control: Used for flow and pressure control in natural gas and oil pipelines to ensure stability during transportation.
Gas and Liquid Distribution Systems: Regulates the flow of gases or liquids, ensuring precise control under various operating conditions.
Automation of Distribution Systems: Used in refineries and natural gas processing plants to automate fluid distribution and regulate the reaction processes.

2.Chemical and Petrochemical Industry

Reactor Pressure and Flow Control: Used in chemical reactors, storage tanks, and other equipment to control pressure and flow, ensuring stability in the chemical reaction process.
Flow/Pressure Regulation: Regulates the flow of liquids or gases in processes such as polymerization, refining, and distillation to ensure efficient production.
Steam Control: Regulates the flow and pressure of steam in steam generators and distribution systems.

3.Water and Wastewater Treatment

Water Flow Control: Regulates water flow and pressure in water supply and wastewater treatment systems to ensure normal operation.
Gas and Chemical Additions: Regulates the flow of chemicals or gases (such as chlorine or ammonia) added during the water treatment process.

4.HVAC (Heating, Ventilation, and Air Conditioning) Systems

Temperature Control and Airflow Regulation: Used in air conditioning systems to regulate the flow of cooling or heating fluids to maintain the desired temperature.
Pressure and Airflow Regulation: Adjusts the flow and pressure of air in ventilation, air conditioning, and humidification systems to ensure indoor comfort.

5.Food and Beverage Industry

Liquid Flow Control: Precisely controls the flow of liquids in processes such as brewing, dairy production, and beverage bottling.
Temperature and Pressure Regulation: Regulates temperature and pressure during heating, cooling, and sterilization to ensure product quality and safety.

6.Pharmaceutical Industry

Precision Flow Control: Regulates the flow of liquids and gases in pharmaceutical manufacturing processes to ensure precise control of process parameters.
Pressure Control: Adjusts pressure in cleaning and sterilization systems to ensure stable system operation.

7.HVAC Systems

Airflow and Temperature Control: Controls the flow and temperature of air to adjust environmental conditions, ensuring comfort and energy efficiency inside buildings.

8.Steel and Metallurgical Industry

Gas Flow Control: Precisely adjusts the flow of gases such as oxygen and nitrogen during smelting and heating processes to ensure stable furnace temperatures and chemical reactions.
Cooling Fluid Flow Regulation: Regulates the flow of cooling fluids in cooling systems to ensure temperature control of equipment.

9.Thermal and Power Industry

Steam and Water Flow and Pressure Control: Regulates the flow of steam and water in boiler systems, heat exchangers, and power plants to ensure efficient operation of thermal systems.

10.Mining Industry

Slurry Flow Regulation: Adjusts the flow and pressure of slurry during transportation and separation processes to ensure efficient extraction and processing of minerals.

The actuator on my automated valve operates, but the valve won’t turn. Why?

Most likely the valve stem or actuator coupling is broken.

The electric actuator limit switches or the pneumatic actuator position stops are not correctly adjusted.

Probably because there is no air pressure to the solenoid or dirt has jammed it. Also, debris might be trapped inside the valve. Or, the air pressure is not sufficient to operate the actuator. Remember: measure air pressure at the actuator, not at the compressor.

Maybe. First, be sure that the actuator torque output is sufficient to turn the valve reliably. Second, you will have to fabricate a custom mounting bracket and coupling to connect the actuator to the valve.

The valve will stop somewhere between full open and close. When power is reapplied to the original circuit, the actuator will complete the cycle.

To make the change just remove the actuator from the valve and turn it, or the valve stem, 90 degrees and remount the actuator.

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

Check the electric wiring schematic that came with the actuator for the correct hookup. Sometimes a copy is inside the actuator cover. If it is missing, don’t guess about the connections. Call the manufacturer for a schematic.

The actuator is wired incorrectly (check the schematic accompanying the actuator), or the external control switch is not the correct type for the actuator.

Not unless you bought it with an optional speed control.

Actuators and solenoid valves require different types of electrical control switches. SPDT for actuators, SPST for solenoids. Check the actuator wiring schematic for the correct wiring and switch type.

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