ASCO NUMATICS 239-1175 Hydraulics Pneumatics

( Brand: Asco Numatics ), ( Manufacturer Part Number: 239-1175 ), ( Part Type: Hydraulic Pneumatic )

Review ASCO NUMATICS 2391175 Used

The **ASCO Numatics 239-1175** is a high-performance, normally closed, spring-return solenoid valve designed for precise pneumatic control in industrial automation, manufacturing, and material handling applications. Part of ASCO s renowned **239 Series**, this valve is engineered to deliver reliable, repeatable operation in demanding environments where air pressure and flow must be meticulously regulated. Constructed from durable materials, including a robust **brass or stainless steel body** (depending on the variant), the 239-1175 is built to withstand continuous use in temperatures ranging from **-20 C to 80 C**, ensuring consistent performance even in fluctuating conditions. Its **normally closed (NC) configuration** means the valve remains sealed until energized, preventing unintended air leakage and conserving energy when the system is inactive.

The valve features a **direct-acting design** with a **piston-type actuator**, providing fast response times and minimal hysteresis, which is critical for applications requiring rapid sequencing or high-speed pneumatic actuation. Its **2-way, 2-position operation** allows for simple on/off control, making it ideal for basic pneumatic circuits such as clamping, indexing, or cylinder actuation. The **1/4-inch NPT (National Pipe Thread) female ports** ensure compatibility with standard pneumatic tubing and fittings, while the **12 VDC or 24 VDC coil options** offer flexibility for integration into existing control systems. The coil is designed for low power consumption while maintaining strong magnetic force, reducing heat buildup and extending the valve s operational lifespan.

Safety and reliability are prioritized in the 239-1175 s construction, with features such as a **sealed coil** to prevent moisture and dust ingress, a **non-return valve** to protect against backpressure, and a **spring-loaded piston** that ensures consistent sealing and minimal wear over time. The valve s **metal-to-metal sealing** between the piston and body further enhances durability, reducing the risk of leaks and maintaining efficiency even after prolonged use. Additionally, the **quick-disconnect terminals** simplify installation and maintenance, allowing for easy replacement of the coil if needed without disturbing the entire assembly.

Ideal for applications in **automotive assembly lines, packaging machinery, robotics, and CNC systems**, the ASCO Numatics 239-1175 is a versatile component that bridges the gap between precision control and rugged industrial demands. Its compact yet sturdy design allows for easy integration into tight spaces, while its **CE and UL-recognized** components ensure compliance with global safety standards. Whether used in a high-volume production environment or a precision-driven application, this solenoid valve delivers the reliability and performance required to keep pneumatic systems running smoothly day after day.

### **Pros and Cons of buying a ASCO Numatics 239-1175 (2391175) Solenoid Valve**

The **ASCO Numatics 239-1175** is a popular **2-way, normally closed (NC) pneumatic solenoid valve** commonly used in industrial automation, CNC machines, and pneumatic systems. Below is a detailed breakdown of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros**

1. **Reliability and Durability**

- ASCO Numatics is a well-established brand known for high-quality, long-lasting solenoid valves. The **239-1175** is designed for heavy-duty industrial use, with robust construction to withstand frequent cycling and harsh environments.

- Many users report minimal failure rates over extended periods, especially when properly maintained.

2. **Wide Compatibility**

- Works with **compressed air (0.2 1.0 MPa / 3 15 PSI)** and is compatible with most standard pneumatic systems.

- Available in various **port sizes (1/4", 3/8", 1/2")**, making it versatile for different applications.

- Can be integrated with **ASCO s other components** (e.g., manifolds, regulators) for seamless system design.

3. **Energy Efficiency**

- The valve is designed to **minimize air leakage** when de-energized (normally closed), reducing wasted compressed air.

- Some models in this series feature **low power consumption**, making them suitable for energy-conscious applications.

4. **Easy Installation and Maintenance**

- Standard **threaded or flanged connections** (depending on variant) simplify installation.

- **Quick-disconnect fittings** are available for easier maintenance and replacement.

- Many users find it **easy to service** common issues (e.g., coil failure) can be resolved by replacing the solenoid assembly.

5. **Wide Operating Temperature Range**

- Typically operates effectively in **0 C to 60 C (32 F to 140 F)**, though some variants may extend this range, making it suitable for indoor and lightly controlled outdoor environments.

6. **Multiple Actuation Options**

- Available in **AC (120V, 240V) and DC (24V, 12V) versions**, allowing flexibility in power supply selection.

- Some models support **momentary or latching operation**, useful in specific control applications.

7. **Good Noise Reduction**

- Compared to some cheaper solenoid valves, the **239-1175** has **lower operating noise**, which is beneficial in cleanroom or noise-sensitive environments.

8. **Aftermarket Support and Availability**

- ASCO Numatics has a **strong global distribution network**, making parts and replacements widely available.

- Many **third-party suppliers** stock this model, reducing lead times in emergencies.

9. **Safety Features**

- **Normally closed (NC) design** ensures no unintended air flow when power is lost, improving system safety.

- Some variants include **overload protection** for the coil to prevent damage from power surges.

10. **Proven Performance in Automation**

- Frequently used in **CNC machines, robotics, packaging equipment, and industrial automation**, where reliability is critical.

- Compatible with **PLCs and control systems** via standard electrical connections.

---

### **Cons**

1. **Higher Upfront Cost**

- Compared to **generic or no-name solenoid valves**, the **239-1175** is **more expensive**, which may be a barrier for small businesses or budget-conscious projects.

- Pricing can vary based on **voltage, port size, and special modifications** (e.g., stainless steel construction).

2. **Limited Customization**

- While ASCO offers multiple variants, **customization options are limited** compared to some competitors (e.g., Festo or SMC).

- Special mounting, unique electrical interfaces, or non-standard airflow requirements may require additional adapters or modifications.

3. **Coil Sensitivity to Power Fluctuations**

- Some users report that **sudden power surges or voltage spikes** can damage the coil, though ASCO valves are generally more robust than cheaper alternatives.

- A **surge protector or proper power conditioning** may be necessary in unstable electrical environments.

4. **Potential for Air Leakage Over Time**

- Like all pneumatic valves, **seals degrade over time**, leading to minor air leaks. While not severe, this can affect system efficiency if not addressed.

- Regular **lubrication and maintenance** are required to prevent this.

5. **Size and Bulk**

- The valve is **larger than some compact alternatives**, which may be a constraint in **space-limited applications**.

- If mounting in tight areas, **custom brackets or alternative models** may be needed.

6. **Dependence on Compressed Air Quality**

- **Dirty or poorly filtered air** can clog internal passages, reducing performance.

- Requires **proper air filtration and moisture separation** upstream to maintain longevity.

7. **Limited Lifespan in Harsh Environments**

- While durable, **extreme temperatures, high humidity, or corrosive environments** (e.g., chemical plants) may shorten its lifespan if not properly protected.

- Some industrial variants (e.g., stainless steel models) are available but increase cost.

8. **Learning Curve for Installation**

- First-time users may find **wiring and pneumatic connections** slightly complex, especially when integrating with PLCs or complex manifolds.

- Clear **installation manuals** are provided, but improper setup can lead to malfunctions.

9. **Potential for Counterfeit Products**

- Due to its popularity, **fake or low-quality replicas** may appear in the market, especially from untrusted suppliers.

- Always **purchase from authorized distributors** to ensure authenticity.

10. **Not Ideal for High-Frequency Cycling**

- While robust, **extreme high-frequency operation (e.g., >100 cycles per minute)** may reduce lifespan if the valve is not properly sized or cooled.

- For such applications, **specialized high-duty valves** may be more appropriate.

---

### **Conclusion**

The **ASCO Numatics 239-1175** is a **high-quality, reliable solenoid valve** that excels in **industrial automation, CNC machines, and pneumatic control systems**. Its **durability, compatibility, and energy efficiency** make it a **strong choice for applications requiring long-term performance and minimal maintenance**. However, its **higher cost, limited customization, and sensitivity to air quality** may be drawbacks for some users.

For **most industrial and automation applications**, the **239-1175 is a safe and effective choice**, especially when budget allows. If **cost is a major concern**, alternatives like **SMC or Festo valves** may offer comparable performance at a lower price, though with slightly different feature sets. For **highly specialized or space-constrained applications**, evaluating **compact or custom-engineered valves** may be necessary.

---

### **Final Recommendation**

You need a **reliable, long-lasting solenoid valve** for **industrial or automation use**.

Your system requires **standardized, well-supported components** with **minimal downtime**.

You can **afford the higher upfront cost** in exchange for **durability and ease of maintenance**.

Your environment has **stable power and clean compressed air**.

**Budget is tight** look for **SMC, Festo, or other mid-range brands** with similar performance.

You need **extreme customization or compact size** explore **specialized valve manufacturers**.

Your application involves **high-frequency cycling or harsh conditions** consult ASCO s **high-duty or stainless steel variants**.

You require **quick, low-cost replacements** ensure you re purchasing from an **authorized distributor** to avoid counterfeits.

**Best for:** **Industrial automation, CNC machines, pneumatic control systems, and applications where reliability outweighs cost concerns.**

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Sells new and surplus product develops channels to purchase such.

ASCO 239-1175 / 2391175 USED PNEUMATIC HOUSING KIT, SUB-D, 25 PIN, W/ DIN239-1175.

part #: 2391175 prices

• $63.92-$116.00

specifications generapneumati:

• brand: Asco Numatics
• mpn: 239-1175
• part type: Hydraulic Pneumatic

payments generapneumati:

• credit card: Discover
• wallet: Paypal
• other

general generapneumati:

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

returns generapneumati:

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

shipping generapneumati:

• class: Standard
• cost: $12.90
• type: Fixed
• transit: 23-36 Days
• service: Standard

seller generapneumati:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 194052
• rating: 99.6%

offer generapneumati:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: March 11, 2026
• quantity: 1

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