ASCO NUMATICS 239-972 Hydraulics Pneumatics

( Brand: Asco Numatics ), ( Manufacturer Part Number: 239-972 ), ( Part Type: Hydraulic Pneumatic )

Review ASCO NUMATICS 239972 Used

The **ASCO Numatics 239-972** is a high-performance, normally closed, spring-return solenoid valve designed for precise pneumatic control in industrial automation applications. Part of ASCO s reliable **Series 239**, this valve is engineered to deliver exceptional durability and consistent performance in demanding environments, making it an ideal choice for machinery, packaging, material handling, and automation systems where reliability and efficiency are critical. Constructed from high-quality materials, the **239-972** features a robust stainless steel body and a durable coil assembly, ensuring long-term resistance to wear, corrosion, and thermal fluctuations. Its compact yet sturdy design allows for easy integration into existing pneumatic systems, while the **normally closed (NC) configuration** ensures that air flow is blocked when de-energized, providing inherent safety and energy efficiency.

The valve operates on a **24 VDC or 110 VAC** power supply, offering flexibility for integration into various control systems, and its **pilot-operated design** ensures smooth, rapid actuation with minimal hysteresis, reducing cycle times and improving overall system responsiveness. The **239-972** incorporates a **sealed, maintenance-free coil** that minimizes the risk of contamination and extends operational lifespan, while its **quick-connect fittings** simplify installation and reduce downtime during system upgrades or repairs. The valve s **metal-seated construction** guarantees tight sealing and superior leak resistance, even under high-pressure conditions, making it suitable for applications requiring precise flow control and minimal air loss.

Beyond its technical robustness, the **239-972** is engineered with user convenience in mind, featuring a **clear, labeled terminal block** for straightforward wiring and a **durable mounting bracket** that allows for versatile installation options, including panel, pipe, or direct-mount configurations. Its **low power consumption** and **fast response time** further enhance its efficiency, reducing operational costs while maintaining high performance. Whether deployed in a high-speed production line, a precision assembly system, or a critical process control application, the **ASCO Numatics 239-972** delivers the reliability, precision, and longevity expected of a premium pneumatic control component. Backed by ASCO s reputation for innovation and quality, this valve stands as a dependable solution for engineers and operators seeking a balance of performance, durability, and ease of integration.

### **ASCO Numatics 239-972 Solenoid Valve: Pros and Cons**

The **ASCO Numatics 239-972** is a 2-way, normally closed, direct-acting solenoid valve commonly used in pneumatic control systems. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Reliability and Durability**

The 239 series is known for its robust construction, designed for heavy-duty industrial applications. It is built to withstand frequent cycling and harsh environments, making it suitable for continuous use in manufacturing, automation, and material handling systems.

2. **Direct-Acting Design**

As a direct-acting valve, it does not require external pilot air pressure, simplifying installation and reducing system complexity. This makes it easier to integrate into smaller or simpler pneumatic circuits.

3. **Wide Voltage Range**

The valve operates on a broad voltage range (typically 12 240 VAC/DC), offering flexibility in power supply compatibility. This makes it adaptable to various control systems without requiring additional voltage converters.

4. **Compact and Lightweight**

Compared to some pilot-operated valves, the 239-972 is relatively compact, making it ideal for applications where space is limited. Its lightweight design also reduces installation and maintenance burdens.

5. **Low Power Consumption**

Direct-acting valves generally consume less power than pilot-operated ones, contributing to energy efficiency in pneumatic systems. This can lead to cost savings over time, especially in large-scale operations.

6. **Quick Response Time**

The valve provides fast actuation, which is critical in applications requiring rapid pneumatic control, such as clamping, indexing, or sorting systems.

7. **Compatibility with ASCO s Ecosystem**

As part of ASCO Numatics product line, the 239-972 is designed to work seamlessly with other ASCO components, such as manifolds, regulators, and control modules. This integration simplifies system design and reduces compatibility issues.

8. **Low Maintenance Requirements**

With minimal moving parts (relative to pilot-operated valves), the 239-972 requires less frequent maintenance. This reduces downtime and labor costs in industrial settings.

9. **Versatile Mounting Options**

The valve can be mounted in various orientations (e.g., horizontal, vertical, or on a manifold), providing flexibility in system layout and design.

10. **Good Flow Capacity**

The valve is rated for moderate flow rates (typically around 10 20 SCFM at 80 PSI), which is sufficient for many standard pneumatic applications, though it may not be ideal for high-flow requirements.

---

### **Cons**

1. **Limited Flow Rate for High-Demand Applications**

The 239-972 is not designed for high-flow applications (e.g., large cylinders or high-speed pneumatic tools). For such uses, larger or pilot-operated valves (e.g., ASCO 230 series) may be more appropriate.

2. **Sensitivity to Contamination**

While durable, the valve s internal components (e.g., coil, plunger, and seals) can be affected by dust, moisture, or compressed air contaminants. Regular filtration and maintenance are necessary to prevent premature wear or failure.

3. **Coil Lifespan and Heat Dissipation**

Direct-acting coils can generate heat during prolonged use, especially in high-temperature environments. Over time, this may reduce coil lifespan or require additional cooling measures. The 239-972 is not designed for extreme temperature ranges (typically 0 60 C/32 140 F), which may limit its use in harsh conditions.

4. **Higher Initial Cost Compared to Basic Valves**

While not excessively expensive, the 239-972 is more costly than very basic solenoid valves (e.g., some generic or non-branded alternatives). However, its reliability often justifies the investment in industrial settings.

5. **Limited Customization**

The valve is a standard model with fixed specifications (e.g., voltage, flow rate, mounting size). Custom modifications (e.g., special connectors or voltage ranges) may require additional components or third-party solutions.

6. **Potential for Leakage Over Time**

Like all pneumatic valves, seals and O-rings can degrade with age or improper maintenance, leading to minor air leaks. While the 239-972 is designed to minimize this, regular inspections are recommended.

7. **Not Ideal for High-Pressure Applications**

The valve is rated for standard pneumatic pressures (typically up to 100 PSI/6.9 bar). For high-pressure systems (e.g., above 150 PSI), specialized valves or additional safety measures may be required.

8. **Dependence on Clean, Dry Air**

The valve performs best with clean, dry compressed air. Moisture or particulate contamination can accelerate wear on internal components, reducing efficiency and lifespan.

---

### **Conclusion**

The **ASCO Numatics 239-972** is a well-suited solenoid valve for **moderate to high-reliability pneumatic applications** where simplicity, direct actuation, and compatibility with ASCO s ecosystem are priorities. Its direct-acting design, wide voltage range, and low maintenance requirements make it a strong choice for industrial automation, material handling, and general pneumatic control systems.

However, it is **not ideal for high-flow, high-pressure, or extremely harsh environments**. For such applications, consider pilot-operated valves (e.g., ASCO 230 series) or larger direct-acting models. Additionally, users should ensure their compressed air system is properly filtered and dried to maximize the valve s lifespan.

---

### **Recommendation**

- You need a **reliable, direct-acting valve** for standard pneumatic control.

- Your system requires **flexibility in voltage input** (12 240 VAC/DC).

- You prioritize **low maintenance and ease of integration** with ASCO components.

- Your application involves **moderate flow rates** (e.g., 10 20 SCFM) and standard pressures (up to 100 PSI).

- You operate in a **controlled environment** with clean, dry compressed air.

- You require **high flow rates** (e.g., for large cylinders or high-speed tools).

- Your system operates at **extreme temperatures** (outside 0 60 C/32 140 F).

- You need **high-pressure capabilities** (above 100 PSI).

- Your environment has **high levels of contamination** (dust, moisture, or oil in compressed air).

- You are working with **very tight space constraints** where even the 239 series may be too large.

- For **higher flow rates**: ASCO 230 series (pilot-operated).

- For **extreme environments**: ASCO 239 series with special coatings or seals.

- For **budget constraints**: Generic direct-acting valves (though reliability may be lower).

- For **custom voltage requirements**: Check ASCO s extended voltage options or consult a distributor for modified versions.

In most standard industrial applications where reliability and simplicity are key, the **239-972 is a solid, well-supported choice**. Always verify your specific system requirements before purchasing.

Details:

Sells new and surplus product develops channels to purchase such. ASCO 239-972 / 239972 USED MK4 HOUSING ASSEMBLY. Call to use a shipping service other than the ones listed. All products are guaranteed to be working but may show signs of use if purchasing a used product.

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: 239972 prices

• $50.69-$298.99

specifications generapneumati:

• brand: Asco Numatics
• mpn: 239-972
• part type: Hydraulic Pneumatic

seller generapneumati:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 191736
• rating: 99.6%

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• class: Standard
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general generapneumati:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Other Hydraulics Pneumatics

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• quantity: 1
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• started: February 25, 2026

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