NUMATIC NWB1391C-006-020 Flow Control Fitting Tube 6MM

( Brand: Numatic ), ( Manufacturer Part Number: NWB1391C-006-020 ), ( Part Type: Flow Control Fitting Tube )

Review NUMATIC Lot Of Flow Control Fitting 6mm Tube Diameter Used

The **Numatic NWB1391C-006-020** is a precision-engineered flow control fitting designed for seamless integration into pneumatic and hydraulic systems requiring reliable, adjustable regulation of air or fluid flow through a 6mm (1/4") tube connection. Part of Numatic s robust NWB series, this fitting combines durability with ease of use, making it an ideal choice for applications in industrial automation, robotics, medical equipment, and custom machinery where consistent airflow or pressure modulation is critical. Constructed from high-quality materials, including a durable brass body and reinforced sealing components, the NWB1391C ensures long-term performance even under fluctuating operational conditions. Its compact yet sturdy design allows for efficient installation in tight spaces, while the integrated flow control valve provides precise adjustment of airflow rates, enabling operators to fine-tune system performance with minimal effort. The fitting s threaded connection (M10 x 1.0) ensures a secure and leak-proof attachment to the system, while the 6mm tube port accommodates standard tubing sizes, facilitating compatibility with a wide range of pneumatic components. Whether used in a CNC machine, automated assembly line, or laboratory instrumentation, this fitting delivers consistent and reliable flow regulation, reducing energy waste and enhancing system efficiency. Built to meet stringent industry standards, the NWB1391C-006-020 exemplifies Numatic s commitment to quality engineering, offering a dependable solution for professionals who demand both precision and performance in their fluid control applications.

### **Pros and Cons of buying a Numatic NWB1391C-006-020 (6mm Tube Flow Control Fitting)**

1. **Precision Flow Control** The fitting is designed for accurate regulation of air or hydraulic flow, making it ideal for pneumatic systems where consistent pressure or speed is critical.

2. **Durable Construction** Numatic components are known for high-quality manufacturing, ensuring reliability in industrial or automated applications.

3. **Compatibility with 6mm Tube** The fitting is specifically designed for 6mm tubing, reducing the risk of leaks or improper connections.

4. **Easy Installation** Standardized design allows for straightforward mounting on existing pneumatic systems with minimal modifications.

5. **Adjustable Flow Rate** The flow control feature allows for fine-tuning of air volume, which is useful in applications requiring variable speed or force.

6. **Low Maintenance** As a mechanical flow control device, it typically requires minimal upkeep compared to electronic alternatives.

7. **Cost-Effective for Specific Applications** If the fitting is used in a system where precise flow regulation is needed, it may justify its cost over simpler, less accurate alternatives.

1. **Limited Adjustability** Unlike electronic flow controllers, this mechanical fitting may not offer as fine or programmable adjustments, which could be a drawback in highly dynamic systems.

2. **Potential for Wear Over Time** Moving parts in flow control fittings can degrade with prolonged use, requiring eventual replacement.

3. **Not Universal** The fitting is specific to 6mm tubing; if system requirements change, additional adapters or replacements may be needed.

4. **Pressure Drop Considerations** Flow control fittings can introduce resistance, leading to slight pressure losses in the system, which may affect overall efficiency.

5. **Skill Dependency** Proper installation and calibration may require technical expertise, especially in complex pneumatic setups.

6. **Limited Brand Support Outside Numatic** If maintenance or replacements are needed, sourcing may be restricted to Numatic or authorized distributors.

7. **Potential for Leaks** If not installed correctly or if seals degrade, leaks can occur, leading to system inefficiencies or failures.

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### **Conclusion**

The **Numatic NWB1391C-006-020** is a reliable, precision-engineered flow control fitting well-suited for applications requiring consistent air or hydraulic flow regulation in 6mm tubing systems. Its mechanical simplicity and durability make it a practical choice for industrial, automated, or pneumatic applications where electronic controls are unnecessary or overkill. However, its limitations in adjustability, potential for wear, and system-specific compatibility mean it may not be the best fit for highly dynamic or large-scale systems where electronic or programmable controls are preferred.

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### **Recommendation**

- You need a **simple, mechanical flow control solution** for a **6mm tube pneumatic system**.

- Your application requires **consistent but adjustable flow** without complex electronics.

- You prioritize **durability and ease of installation** in a **moderate-duty industrial or automated setup**.

- You are already using **Numatic components**, ensuring compatibility and support.

- You need **highly precise or programmable flow control**, in which case an electronic flow controller may be better.

- Your system involves **frequent adjustments or variable loads**, where a more flexible solution (e.g., proportional valves) would be advantageous.

- You are working with **larger-scale or high-pressure systems**, where the fitting s limitations in pressure handling or scalability could be problematic.

- Cost is a major concern, and a **simpler, less precise flow control method** (e.g., orifice plates) could suffice.

For most **mid-range pneumatic applications** where reliability and simplicity are key, the **Numatic NWB1391C-006-020 is a solid choice**. However, always verify system requirements and consult with a pneumatic specialist if the application is critical.

Details:

Prices for these options may differ from standard ground shipping. These services include Item is sold as pictured. The cost of combined shipping depends on weight, location buyer and size box. UPS 2 Day Air AM.

These services include: UPS 3 Day Select. Lot of 5 Numatic NWB1391C-006-020 Flow Control Fitting, 6mm Tube Diameter, 1/8 NPT, 42.4mm Long, 4.9mm Thread length , 14mm Hex. UPS Next Day AM.

part #: nwb1391c006020 price

• $55.99

specifications pneumativalv:

• brand: Numatic
• mpn: Nwb1391c-006-020
• part type: Flow Control Fitting Tube

seller pneumativalv:

• rating: 100.0%
• city: Kawkawlin, Michigan
• # reviews: 28425

payments pneumativalv:

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• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, UPS Ground, USPS Priority Mail, UPS Next Day Air
• transit: 3-8 Days
• cost: $10.95
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• carrier: USPS, UPS

offer pneumativalv:

• quantity: 4
• availability: In Stock
• options: Ship-to-home
• started: April 27, 2026
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• sold: 0

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• paid by: Buyer
• method: Money back
• policy: Returns Accepted
• time: 30 Days

general pneumativalv:

• Hydraulics, Pneumatics, Pumps Plumbing > Pump Flow Controllers > Pneumatic Controllers
• condition: Used