NUMATICS 031SA4002 Valve 120V 237-572B

( Brand: Numatics ), ( Manufacturer Part Number: 031SA4002 ), ( Part Type: Valve ), ( Country Of Origin: United States )

Review NUMATICS Valve 120v

The Numatics 031SA4002 is a high-performance, electrically actuated solenoid valve designed for precise pneumatic control in industrial automation applications. Part of Numatics renowned 031 Series, this normally closed, 2/2-way valve operates on a 120V AC power supply, delivering reliable and efficient air control for a wide range of machinery and systems. With a nominal flow rate of 237 572 standard cubic feet per minute (SCFM), this valve is engineered to handle moderate to high-volume air demands, making it ideal for applications such as clamping, positioning, indexing, and general pneumatic actuation where consistent and repeatable performance is critical. Constructed with durable materials, including a robust stainless steel body and a corrosion-resistant coating, the 031SA4002 ensures long-term reliability even in demanding environments, such as manufacturing plants, assembly lines, or automated packaging systems. Its compact yet sturdy design allows for easy integration into existing control panels or direct mounting on pneumatic circuits, while the sealed internal components minimize the risk of contamination from dust, moisture, or debris, enhancing overall system longevity. The valve features a quick-exhaust design, which reduces energy consumption and improves response time, making it an efficient choice for applications requiring rapid cycling. Additionally, its modular construction simplifies maintenance, as components like the solenoid coil, pilot valve, and diaphragm can be serviced or replaced without dismantling the entire unit. Whether used in automated material handling, robotics, or specialized industrial processes, the Numatics 031SA4002 delivers consistent, high-precision air control, ensuring seamless operation and reduced downtime. Its compatibility with standard pneumatic fittings and control systems further enhances its versatility, making it a trusted component in modern automation setups.

### **Pros and Cons of buying a Numatics 031SA4002 Valve (120V, 237-572 lbm/hr)**

1. **Reliability and Durability** Numatics is a well-established brand in pneumatic automation, known for producing high-quality, long-lasting components. The 031SA4002 is designed for industrial use, ensuring robust performance in demanding environments.

2. **Wide Flow Range (237-572 lbm/hr)** This valve is versatile for applications requiring moderate to high airflow, making it suitable for a variety of pneumatic systems, including packaging, material handling, and assembly lines.

3. **120V AC Operation** The 120V power requirement makes it compatible with standard industrial electrical setups in North America, simplifying installation and reducing compatibility issues.

4. **Modular and Easy to Integrate** The valve is part of Numatics **SAE Series**, which is designed for easy mounting and integration into existing pneumatic systems. It supports **0.25" NPT or 0.5" NPT** connections, providing flexibility in system design.

5. **Energy Efficiency** Numatics valves are optimized for efficient air consumption, reducing operational costs over time.

6. **Low Maintenance** The design minimizes wear points, reducing the need for frequent servicing.

7. **Compatibility with Numatics Ecosystem** If you already use other Numatics components (e.g., compressors, regulators, or cylinders), this valve will integrate seamlessly, ensuring consistent performance.

8. **Good Availability & Support** As a widely used industrial component, spare parts and technical support are readily available.

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1. **Higher Upfront Cost** Compared to generic or lesser-known brands, Numatics valves are premium-priced. The 031SA4002 may require a significant investment, especially for small-scale or budget-conscious applications.

2. **Potential Overkill for Low-Demand Systems** If your application only requires **low airflow (below 237 lbm/hr)**, a smaller, more cost-effective valve might suffice, making this model unnecessary.

3. **Electrical Dependency** Since it runs on **120V AC**, it requires a stable power supply. In environments with frequent voltage fluctuations or power outages, additional protection (e.g., surge suppressors) may be needed.

4. **Limited Customization** Unlike some high-end industrial valves, this model may not offer extensive customization options (e.g., different mounting styles, additional sensors, or advanced diagnostics).

5. **Installation Complexity** While designed for ease of use, improper installation (e.g., incorrect piping, wiring, or pressure settings) could lead to performance issues or premature failure.

6. **Potential for Noise in Open Systems** Pneumatic valves can generate noise, especially if exhaust ports are not properly muffled. This may be a concern in noise-sensitive environments.

7. **Depreciation Over Time** While durable, industrial pneumatic valves may not retain high resale value, especially if newer, more efficient models emerge.

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The **Numatics 031SA4002** is an excellent choice for **industrial applications requiring reliable, high-performance pneumatic control within the 237-572 lbm/hr range**. Its **durability, compatibility with Numatics ecosystem, and ease of integration** make it a strong option for medium to large-scale systems where reliability is critical.

However, if your application has **low airflow demands, tight budget constraints, or minimal electrical infrastructure**, a more cost-effective alternative (e.g., a generic 120V valve or a smaller Numatics model) might be preferable.

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- You need a **reliable, high-performance valve** for an industrial pneumatic system.

- Your application falls within the **237-572 lbm/hr range**.

- You already use **Numatics components**, ensuring compatibility.

- Budget is not a major concern, and long-term durability is prioritized.

- Your airflow requirements are **below 237 lbm/hr** (a smaller valve would suffice).

- You are working with a **tight budget** and can find a similarly rated valve at a lower cost.

- Your system has **frequent power issues** that could affect valve performance.

For most **serious industrial applications**, the **Numatics 031SA4002 is a solid, well-supported choice** that balances performance, reliability, and ease of use. If cost is a major factor, compare it with other reputable brands (e.g., Festo, SMC) to ensure the best value.

Details:

Numatics 031SA4002 Valve 120V 237-572B.

part #: 031sa4002 prices

• $24.77-$194.99

specifications valvesplumbing:

• brand: Numatics
• mpn: 031sa4002
• part type: Valve
• country of origin: United States

shipping valvesplumbing:

• service: Expedited
• cost: $0.00
• class: Expedited
• transit: 3-6 Days
• type: Fixed

seller valvesplumbing:

• # reviews: 13628
• city: Spirit Lake, Idaho
• rating: 100.0%

offer valvesplumbing:

• quantity: 1
• sold: 0
• started: February 27, 2026
• availability: In Stock
• options: Ship-to-home

general valvesplumbing:

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

payments valvesplumbing:

• other
• wallet: Apple-pay
• credit card: Visa

returns valvesplumbing:

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

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