SMC VH402-N04 Vacuum Regulator Valve Pneumatic Control 1.0MPA 150

( Brand: Smc ), ( Manufacturer Part Number: VH402-N04 ), ( Part Type: Vacuum Valve Pneumatic Control Regulator ), ( Valve Operation: Manual ), ( Unit Type: Unit ), ( Country Of Origin: Japan )

Review SMC Vacuum Regulator Valve 150 Psi Pneumatic Control Industrial

The **SMC VH402-N04 Vacuum Regulator Valve (1.0 MPa, 150 Series)** is a precision-engineered pneumatic control component designed to deliver reliable and consistent vacuum regulation within industrial and automation applications. Part of SMC s renowned **150 Series**, this normally closed (NC) pilot-operated vacuum regulator ensures precise control over air flow, maintaining a stable vacuum level with minimal pressure fluctuations. Built to withstand operating pressures up to **1.0 MPa (10 bar)**, the valve is constructed from high-quality materials, including a durable **aluminum body** and **stainless steel internals**, ensuring long-term durability and resistance to corrosion in demanding environments. Its **pneumatic control mechanism** allows for seamless integration into automated systems, where consistent vacuum performance is critical for processes such as packaging, material handling, or testing applications.

The **VH402-N04** features a **direct-acting pilot valve** that responds rapidly to pressure changes, providing smooth and stable vacuum regulation with an adjustable setpoint range, typically between **0.01 bar to 0.9 bar (absolute)**, depending on system requirements. Its **compact yet robust design** makes it ideal for integration into tight spaces while maintaining high performance. The valve is equipped with **standard 1/4" NPT (G1/4") ports**, ensuring compatibility with common pneumatic fittings, and its **normally closed (NC) configuration** ensures safety by default, preventing unintended air leakage when de-energized. Additionally, the valve s **low noise operation** and **minimal wear components** contribute to extended service life, reducing maintenance downtime in continuous operation scenarios.

SMC s **150 Series** is renowned for its **high reliability and precision**, making this vacuum regulator valve a trusted choice for industries requiring **consistent, repeatable vacuum control**. Whether used in **automated packaging systems, laboratory equipment, or industrial testing applications**, the **VH402-N04** delivers efficient performance with minimal energy consumption. Its **modular design** also allows for easy installation and replacement, ensuring seamless integration into existing pneumatic circuits. With **SMC s reputation for quality and innovation**, this vacuum regulator valve represents a dependable solution for engineers and operators seeking **high-performance pneumatic control** in their applications.

### **Pros and Cons of buying a SMC VH402-N04 Vacuum Regulator Valve (1.0 MPa, 150 Series, Pneumatic Control)**

1. **Precision Control** The valve is designed for accurate vacuum regulation, ensuring consistent pressure levels in pneumatic systems. This is particularly useful in applications requiring stable airflow or suction control, such as packaging, material handling, or laboratory equipment.

2. **High Quality and Reliability** SMC is a well-established manufacturer in pneumatic automation, known for durable and dependable components. The VH402 series is part of their standard product line, which benefits from extensive testing and refinement.

3. **Compatibility with SMC Systems** If you already use other SMC components (e.g., compressors, cylinders, or control modules), this valve integrates seamlessly, reducing compatibility issues and simplifying maintenance.

4. **Modular and Easy Installation** The valve features a compact design with standard mounting options, making it straightforward to install in existing or new pneumatic circuits. The 150 series is part of SMC s mid-range line, offering a balance between performance and cost.

5. **Pneumatic Control** The valve operates using compressed air, which is energy-efficient and avoids the need for electrical power in some applications. This can be advantageous in hazardous or explosion-proof environments where electrical components are restricted.

6. **Adjustable Pressure Range** With a rated pressure of 1.0 MPa (10 bar), it can handle moderate to high vacuum or pressure applications, depending on system requirements. The adjustable setting allows fine-tuning for specific workflows.

7. **Low Maintenance** SMC valves are generally low-maintenance, with minimal wear parts. The internal design reduces clogging and ensures long-term performance with proper filtration and lubrication.

8. **Support and Documentation** SMC provides comprehensive technical documentation, including installation guides, wiring diagrams, and troubleshooting resources. Their customer support is accessible for technical inquiries.

9. **Versatility** Suitable for various industries, including automotive, food processing, pharmaceuticals, and general manufacturing, where precise vacuum control is required.

10. **Cost-Effective for Mid-Range Needs** While not the most budget-friendly option, it offers a good balance between performance and price, avoiding the need for over-engineered or overly expensive solutions.

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1. **Higher Initial Cost** Compared to generic or lower-end vacuum regulators, the SMC VH402-N04 is more expensive. For small-scale or low-budget projects, this may be a significant drawback.

2. **Dependence on SMC Ecosystem** If your system relies on non-SMC components, integration might require additional adapters or compatibility checks, potentially adding complexity or cost.

3. **Limited Customization** The valve is a standard model with fixed specifications (e.g., port sizes, pressure range). For highly specialized applications, custom modifications may not be feasible without additional components.

4. **Requires Proper Setup** Like all pneumatic valves, it needs correct installation, including proper piping, filtration, and lubrication to prevent damage or inefficiency. Improper setup can lead to performance issues or premature failure.

5. **Spare Parts Availability** While SMC parts are widely available, older or discontinued models might have limited spare components over time, requiring careful inventory management.

6. **Learning Curve for Non-Experts** Pneumatic systems can be complex, and configuring the valve correctly (e.g., setting the desired vacuum level) may require technical knowledge or assistance from a specialist.

7. **Potential for Leakage Over Time** All pneumatic valves can develop leaks with prolonged use, especially if exposed to contaminants or extreme conditions. Regular inspections are necessary to maintain efficiency.

8. **Size and Space Constraints** The valve s physical dimensions (part of the 150 series) may not fit in compact or space-limited applications, requiring careful placement or alternative solutions.

9. **No Built-In Diagnostics** Unlike some advanced control systems, the VH402-N04 does not include self-diagnostic features. Fault detection may require external monitoring or manual checks.

10. **Environmental Sensitivity** Exposure to moisture, dust, or extreme temperatures can reduce performance or lifespan. Additional protective measures (e.g., enclosures, filters) may be needed in harsh environments.

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### **Conclusion**

The **SMC VH402-N04 vacuum regulator valve** is a robust, reliable, and well-supported component ideal for applications requiring precise vacuum control in pneumatic systems. Its strengths lie in its compatibility with SMC s ecosystem, durability, and ease of integration into larger automation setups. However, its higher cost, potential complexity for non-specialists, and dependence on proper installation and maintenance may pose challenges for smaller operations or DIY projects.

For users already invested in SMC s pneumatic infrastructure or those needing a dependable mid-range solution, this valve is a strong choice. Conversely, budget-conscious buyers or those with highly customized needs may find alternatives (e.g., generic regulators, electronic controls, or lower-cost brands) more suitable.

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### **Recommendation**

- You are part of an established SMC-based pneumatic system and need a reliable, off-the-shelf vacuum regulator.

- Your application demands precise and stable vacuum control (e.g., packaging, material handling, or laboratory equipment).

- You prioritize long-term reliability, support, and compatibility with other SMC components.

- You have the technical expertise or resources to install and maintain the valve properly.

- Your budget is tight, and you can find equally effective (but cheaper) generic or brand-name alternatives.

- Your system is non-SMC, and integration risks or additional adapters are a concern.

- You require highly customized pressure ranges or features not offered by the standard model.

- You lack experience with pneumatic systems and need a simpler, more forgiving solution.

- **Budget Option:** Generic vacuum regulators (e.g., from local suppliers or online marketplaces) if compatibility is not a concern.

- **Electronic Control:** If you need digital adjustments or monitoring, consider an electronic vacuum regulator with PID control.

- **Lower-Series SMC:** If space is a constraint, the **VH401-N04 (100 series)** may offer a more compact alternative.

- **Higher-Series SMC:** For industrial or high-demand applications, the **VH403-N04 (200 series)** provides enhanced durability.

Ultimately, the VH402-N04 is a **solid professional-grade choice** for those who value performance and integration within SMC s product line. For other use cases, weigh the pros and cons carefully against your specific requirements.

Details:

Perfect for various industrial applications, this vacuum regulator valve ensures reliable performance and control over systems. Type: Vacuum Regulator Valve. Key Features: Brand: SMC. Made in Japan by the reputable brand SMC, this unit offers precision and efficiency regulating vacuum pressure.

SMC VH402-N04 Vacuum Regulator Valve 1.0MPa 150 PSI Pneumatic Control Industrial. The SMC VH402-N04 Vacuum Regulator Valve is a high-quality pneumatic control unit designed for industrial use. With a maximum pressure of 1.0MPa 150 PSI, this manual valve is durable and reliable for controlling vacuum systems.

part #: vh402n04 prices

• $50.00-$250.00

specifications valvesplumbing:

• brand: Smc
• mpn: Vh402-n04
• part type: Vacuum Valve Pneumatic Control Regulator
• valve operation: Manual
• unit type: Unit
• country of origin: Japan

returns valvesplumbing:

• policy: No Returns

offer valvesplumbing:

• started: March 23, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0

seller valvesplumbing:

• # reviews: 598
• city: ana, California
• rating: 98.3%

shipping valvesplumbing:

• transit: 5-9 Days
• cost: $10.50
• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS

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general valvesplumbing:

• condition: Used
• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds

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