
( Brand: Asco Numatics ), ( Manufacturer Part Number: 240-131 ), ( Part Type: Module )
The **ASCO Numatics 240-131 (240131)** is a high-performance, normally closed, spring-return pneumatic solenoid valve designed for reliable and efficient control of air or gas flows in industrial automation, manufacturing, and process applications. Part of ASCO s renowned **240 Series**, this valve is engineered to deliver precise and consistent operation in demanding environments where dependability and durability are critical. With a **3/8" (10mm) NPT female port connection**, it is well-suited for medium-flow applications, making it ideal for use in pneumatic cylinders, clamps, grippers, and other actuators where rapid and accurate switching is required. The valve operates on a **24V DC or 110/220V AC** control signal, offering flexibility in integration with PLCs, control panels, or standalone automation systems. Its **normally closed (NC) configuration** ensures that the air flow is blocked when no power is applied, enhancing safety by preventing unintended actuation. The robust **aluminum housing** provides excellent resistance to corrosion and mechanical stress, while the **stainless steel diaphragm** ensures long-term sealing integrity, even in environments with contaminants or moisture. ASCO s proprietary **sealed coil design** protects against dust, oil, and humidity, making this valve highly resistant to environmental degradation and extending its operational lifespan. The valve s **low power consumption** and **fast response time** contribute to energy efficiency and improved productivity in automated processes. Whether deployed in food and beverage processing, automotive assembly, packaging machinery, or general industrial automation, the **240-131** delivers consistent performance with minimal maintenance, reinforcing its reputation as a dependable workhorse in pneumatic control systems. Its compact yet sturdy construction also allows for easy installation in tight spaces, further enhancing its versatility across a wide range of applications.
### **ASCO Numatics 240-131 (240131) Solenoid Valve: Pros and Cons**
#### **Overview**
The **ASCO Numatics 240-131 (240131)** is a **2-way, normally closed (NC), 24V DC solenoid valve** commonly used in pneumatic control systems. It is designed for general-purpose applications, including automation, packaging, and industrial machinery.
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### **Pros**
1. **Reliability and Durability**
- ASCO Numatics is a well-established brand known for high-quality, long-lasting solenoid valves. The 240 series is built for industrial use, with robust construction to withstand frequent cycling and harsh environments.
- The valve is designed for **millions of operating cycles**, making it suitable for continuous use in automated systems.
2. **Wide Voltage Range Compatibility**
- Operates on **24V DC**, which is a standard voltage in many industrial control systems, reducing the need for additional power conversion.
- Some models in the 240 series also support **24V AC**, offering flexibility in wiring and system integration.
3. **Compact and Versatile Design**
- The valve has a **small footprint**, making it easy to integrate into tight spaces in machinery or control panels.
- Available in **multiple port configurations** (e.g., 1/4" NPT, 1/8" NPT, or metric connections), allowing compatibility with various piping systems.
4. **Low Power Consumption**
- Designed to operate efficiently with minimal power draw, reducing energy costs in large-scale pneumatic systems.
5. **Easy Installation and Maintenance**
- Simple **plug-and-play** design with standard electrical and pneumatic connections.
- Minimal maintenance required, with no internal moving parts beyond the solenoid coil and pilot mechanism.
6. **Compatibility with Common Control Systems**
- Works seamlessly with **PLCs, relays, and other industrial control devices** due to its standard 24V DC operation.
- Can be easily wired into **latching circuits** for energy-saving applications.
7. **Good Flow Rate for General Applications**
- While not the highest-flow valve on the market, it provides sufficient airflow for **light to medium-duty pneumatic tasks**, such as clamping, holding, or simple actuation.
8. **Cost-Effective for Standard Applications**
- Priced competitively for its reliability and performance, making it a cost-effective choice for many industrial and commercial applications.
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### **Cons**
1. **Limited Flow Capacity**
- The **240-131** is not designed for high-flow applications (e.g., large cylinders or high-pressure systems). Its flow rate is ** 100 L/min (3.5 CFM) at 80 PSI**, which may be insufficient for heavy-duty or high-speed pneumatic tasks.
- For applications requiring higher airflow, larger valves (e.g., ASCO 240-132 or 240-133 series) may be necessary.
2. **No Built-In Protection Against Overpressure**
- Unlike some higher-end valves, the **240-131 does not include built-in pressure relief or overpressure protection**. Users must ensure proper system safeguards (e.g., pressure regulators, safety valves) are in place to prevent damage from excessive pressure.
3. **Basic Pilot Operation (No Integral Pilot)**
- The valve relies on **external piloting** (e.g., via a relay or PLC signal) to activate. While this is standard for many applications, it requires additional wiring and control logic compared to self-piloting or latching valves.
4. **Limited Environmental Resistance**
- While durable, the **240-131 is not rated for extreme environments** (e.g., high humidity, corrosive gases, or extreme temperatures without additional protection). For harsh conditions, specialized versions (e.g., ASCO s **240-131X** or **240-131H**) may be needed.
5. **No Integral Position Feedback**
- Unlike some advanced solenoid valves, the **240-131 does not provide built-in position feedback** (e.g., limit switches or sensors). Users must add external feedback devices if real-time position monitoring is required.
6. **Potential for Leakage Over Time**
- Like all pneumatic valves, **seals can degrade with age or frequent use**, leading to minor air leaks. Regular maintenance may be required to ensure optimal performance.
7. **Limited Customization Options**
- The **240-131 is a standard valve** with few customization options (e.g., no built-in timers, latching, or advanced control features). For specialized applications, other models (e.g., ASCO s **240-131L** for latching or **240-131T** for timing) may be more suitable.
8. **Dependence on Power Supply Stability**
- Since it operates on **24V DC**, fluctuations or power interruptions can affect performance. A stable power source or backup system may be needed in critical applications.
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### **Conclusion**
The **ASCO Numatics 240-131 (240131)** is a **reliable, cost-effective, and easy-to-install** solenoid valve ideal for **general-purpose pneumatic control** in light to medium-duty applications. Its **durability, compact size, and compatibility with standard control systems** make it a popular choice for automation, packaging, and industrial machinery.
However, it is **not suitable for high-flow, high-pressure, or extreme-environment applications** without modifications. Users should carefully assess their **flow requirements, environmental conditions, and control needs** before selecting this valve.
For applications requiring **higher airflow, latching, or advanced features**, ASCO offers alternative models (e.g., **240-132, 240-131L, or 240-131X**) that may better meet specific demands.
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### **Recommendation**
**Buy the ASCO Numatics 240-131 (240131) if:**- You need a **reliable, low-cost, 24V DC solenoid valve** for **general pneumatic control**.
- Your application involves **light to medium airflow** (e.g., clamping, simple actuation, or holding).
- You require a **compact, easy-to-install valve** with minimal maintenance.
- Your system operates in **moderate environmental conditions** (not extreme heat, cold, or corrosive environments).
**Consider alternatives if:**- You need **higher airflow** (e.g., for large cylinders or high-speed operations) **ASCO 240-132 or 240-133**.
- Your application requires **latching or energy-saving features** **ASCO 240-131L**.
- You operate in **harsh environments** (e.g., high humidity, chemicals) **ASCO 240-131X or 240-131H**.
- You need **position feedback or advanced control** **ASCO with integrated sensors or PLC-compatible models**.
For most **standard pneumatic control tasks**, the **240-131 remains a solid, well-supported choice** due to ASCO s reputation for quality and reliability.
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. ASCO 240-131 / 240131 USED DISCONTINUED BY MANUFACTURER, PNEUMATIC MODULE, 8 X PORT, 5 PIN PORTS, 12mm FEMALE CONNECTOR, PNP SOURCING I/O TYPE. Sells new and surplus product develops channels to purchase such.
All products are guaranteed to be working but may show signs of use if purchasing a used product.