NAMUR Pneumatic Valve Metal Work – Optimize Performance – Reduce Leakage – Easy Installation

In modern industrial pneumatic systems, precise and stable airflow control is essential for optimal performance. The Metal Work NAMUR pneumatic valve is an efficient solution designed according to the NAMUR standard, allowing direct mounting onto actuators, reducing leakage, saving installation space, and improving overall system reliability.

1. Introduction to NAMUR Pneumatic Valve Metal Work

In industrial pneumatic systems, control valves play an important role in distributing and regulating airflow. Selecting the right valve not only ensures stable system operation but also improves efficiency and extends equipment lifespan.

The NAMUR pneumatic valve by Metal Work is a high-quality valve designed according to the NAMUR standard, allowing direct mounting onto actuators, helping optimize the system and reduce intermediate accessories.

2. What is a NAMUR Valve?

A NAMUR valve is a pneumatic valve designed according to the NAMUR standard (direct mounting standard for pneumatic actuators).

This type of valve is commonly used for:

• Controlling industrial valve opening/closing
• Controlling pneumatic cylinders
• Air distribution in automation systems

👉 The biggest advantage is direct mounting, compact design, reduced leakage, and easy maintenance.

3. Structure of NAMUR Pneumatic Valve

The Metal Work NAMUR valve has a robust structure with the following main components:

• Valve body: aluminum alloy, lightweight and durable
• Spool: chemically nickel-plated aluminum for corrosion resistance
• Piston: creates control movement
• Spring: made of special steel
• Seals: NBR rubber for leak prevention
• Control/Base: engineering material (Hostaform)

👉 The optimized design ensures stable operation in harsh industrial environments.

4. Operating Principle

The valve operates based on pneumatic control:

1. Compressed air is supplied to the valve
2. Control signal (electric or pneumatic) acts on the piston
3. The spool shifts position
4. Changes the airflow path (ports A/B)
5. Controls the output device (cylinder, actuator, etc.)

👉 The switching process is fast, precise, and repeatable.

5. Technical Specifications

• Operating pressure:
  • Electric: 2.5 – 10 bar
  • Pneumatic: 1 – 10 bar
• Minimum actuation pressure: approx. 2.5 bar
• Operating temperature: -10°C to +60°C
• Flow rate:
  • ~750 Nl/min (ΔP 0.5 bar)
  • ~1100 Nl/min (ΔP 1 bar)
• Response time:
  • 7 – 45 ms (depending on type)

👉 Ensures fast response and high performance in automation systems.

6. NAMUR Valve Types

Metal Work valves are available in multiple versions:

🔹 By function

• 5/2 valve (5 ports – 2 positions)
• 4/2 valve (4 ports – 2 positions)

🔹 By operating mechanism

• Monostable: spring return
• Bistable: maintains position

🔹 By control type

• Solenoid valve
• Pneumatically actuated valve

7. NAMUR Standard and Connection Advantages

The NAMUR standard allows:

• Direct mounting onto actuator
• No need for intermediate tubing
• Reduced air leakage
• Space-saving installation

👉 This is a widely used standard in modern industrial valve systems.

8. Key Advantages of Metal Work Valve

✔ NAMUR standard design
✔ High durability, corrosion-resistant materials
✔ Fast response and high accuracy
✔ Easy installation, space saving
✔ Reduced air leakage
✔ Suitable for harsh industrial environments
✔ Long service life, low maintenance

9. Applications in Pneumatic Systems

Metal Work NAMUR valves are widely used in:

• Industrial automation systems
• Process control valves
• Food & beverage industry
• Chemical industry
• Water treatment plants
• Packaging systems

10. Selection Guidelines

When selecting a NAMUR valve, consider:

• System pressure
• Required airflow rate
• Control type (electric or pneumatic)
• Type of actuator
• Working environment

👉 Recommendation:

• Simple systems → choose monostable
• Systems requiring position holding → choose bistable

11. Installation and Operation

• Mount directly onto actuator following NAMUR standard
• Ensure tight connections to prevent leakage
• Check pressure before operation
• Periodically maintain seals and springs

👉 Proper installation helps improve system performance and lifespan.

The price of Metal Work NAMUR valves depends on:

• Model (4/2 or 5/2)
• Control type
• Materials
• Included accessories

👉 Contact us to receive accurate quotation and the most suitable solution for your system.