What is a NAMUR Solenoid Valve?

A NAMUR solenoid valve is a specialized valve used in pneumatic systems. It is designed to directly interface with NAMUR-style actuators and devices. These valves regulate the flow of compressed air, commonly used for controlling cylinders, actuators, and other pneumatic components.

How Does a NAMUR Solenoid Valve Work?

NAMUR solenoid valves use an electrical signal to control airflow. When the solenoid coil is energized, it opens or closes the valve to allow or restrict air flow, depending on the application. These valves are often mounted directly onto pneumatic actuators for seamless integration and precise operation.

Applications of NAMUR Solenoid Valves

NAMUR solenoid valves are widely used in:

• Pneumatic control systems
• Industrial automation
• Packaging machinery
• Robotics
• Valve actuators

These valves are ideal for applications requiring accurate control of airflow in pneumatic devices.

Key Features of NAMUR Solenoid Valves

• Direct interface: Designed for direct mounting onto NAMUR actuators or devices.
• Compact design: Smaller and space-efficient, suitable for tight spaces.
• Pneumatic control: Manages airflow with minimal power consumption.
• Double solenoid operation: Allows switching between two positions for efficient control.
• Fast response time: Enables quick activation and deactivation for critical applications.

Types of NAMUR Solenoid Valves

• 2/2-way solenoid valve: Manages airflow with simple on/off control.
• 3/2-way solenoid valve: Directs air to actuators or cylinders with two-position control.
• 5/2-way solenoid valve: Controls double-acting actuators with two states for more complex operations.

Understanding the NAMUR Standard

NAMUR is a German standard that defines the interface between pneumatic actuators and solenoid valves. This standard ensures compatibility, simplifies installation, and enhances operational efficiency in automated systems.

Installation of NAMUR Solenoid Valves

1. Mount the valve onto the NAMUR actuator, aligning it with mounting holes.
2. Connect the air supply to the appropriate ports.
3. Wire the solenoid, ensuring correct voltage and polarity.
4. Check for leaks and verify proper operation by activating the solenoid.
5. Perform a system test to confirm correct installation.

Maintenance of NAMUR Solenoid Valves

• Inspect regularly for air leaks around seals and connections.
• Clean the solenoid coil to prevent debris accumulation.
• Lubricate moving parts if required.
• Check electrical connections for looseness or corrosion.
• Test performance to ensure proper activation and deactivation.
• Replace worn seals and O-rings as needed.

Troubleshooting NAMUR Solenoid Valves

• Ensure the power supply matches the required voltage.
• Check for coil burnout if the valve is not activating.
• Inspect for air leaks in seals and ports.
• Verify proper mounting alignment with the actuator.
• Confirm that the control signal is functioning properly.

Pressure Range and Airflow Control

The pressure range typically falls between 1 bar and 10 bar, depending on the model. These valves control airflow by shifting an internal valve or spool in response to electrical signals, enabling precise operation.

Advantages of NAMUR Solenoid Valves

• Compact design for space efficiency.
• Direct mounting reduces system complexity.
• Reliable and precise airflow control.
• Energy-efficient operation for cost savings.
• Explosion-proof versions available for hazardous environments.

Industries Using NAMUR Solenoid Valves

• Automated manufacturing: For pneumatic actuator control in assembly lines.
• Packaging: For controlling pneumatic components in packaging systems.
• Robotics: For actuators and components in robotic systems.
• Process control: Used in chemical, oil & gas, and food industries.
• HVAC systems: For controlling air valves and dampers.

Compatible Actuators

NAMUR solenoid valves are designed to work with pneumatic actuators, including:

• Rotary actuators
• Linear actuators
• Double-acting actuators
• Spring-return actuators

These actuators integrate seamlessly with NAMUR solenoid valves for reliable operation.

Selecting the Right NAMUR Solenoid Valve

• Determine the type of valve needed: 2-way, 3-way, or 5-way.
• Ensure compatibility with operating pressure and flow rate.
• Verify voltage and power supply requirements.
• Select materials that suit the operating environment.
• Choose explosion-proof valves if used in hazardous conditions.

Customization Options

NAMUR solenoid valves can be customized for specific applications, including adjustments for pressure range, voltage, material, and control options. Manufacturers offer tailored solutions to meet unique requirements.