ASCO NUMATICS 240-173 Valves Manifolds

( Brand: Asco Numatics ), ( Manufacturer Part Number: 240-173 ), ( Part Type: Valve Manifold )

Review ASCO NUMATICS 240173 Used

The **ASCO Numatics 240-173 (240173)** is a high-performance, normally closed, spring-return pneumatic solenoid valve designed for reliable and precise control in industrial automation, manufacturing, and process applications. Part of ASCO s robust **240 Series**, this valve is engineered to deliver consistent and repeatable operation in demanding environments where air pressure, temperature fluctuations, and mechanical stress are common. Constructed with a **durable brass body** and a **stainless steel diaphragm**, the 240-173 ensures long-term durability and resistance to corrosion, making it ideal for use in harsh or corrosive atmospheres, such as food and beverage processing, pharmaceutical manufacturing, or chemical handling facilities. The valve features a **direct-acting design**, which provides fast response times and minimal air consumption, enhancing efficiency in automated systems where quick actuation is critical.

The **240-173** operates on a **24 VDC or 110 240 VAC** control signal, offering flexibility for integration into a wide range of control systems, including PLCs, relays, or direct wiring setups. Its **normally closed (NC) configuration** means the valve remains sealed when de-energized, preventing unintended air flow and ensuring safety in applications where default shutdown is required. The valve s **pilot-operated design** allows for smooth, silent operation with minimal wear, reducing maintenance requirements and extending the lifespan of the system. Additionally, the **quick-disconnect fittings** (standardized to **1/4" NPT or metric equivalents**) simplify installation and allow for easy replacement or modification without specialized tools.

One of the standout features of the **240-173** is its **high flow capacity**, capable of handling air pressures up to **150 PSI (10 bar)**, making it suitable for applications requiring strong, consistent airflow, such as clamping, actuating cylinders, or pneumatic conveying systems. The valve s **sealed internal components** prevent contamination from entering the air supply, ensuring clean, oil-free air delivery a critical requirement in industries where particulate or lubricant-free air is essential, such as in semiconductor manufacturing or medical device production. The **spring-return mechanism** guarantees reliable reset after de-energization, eliminating the need for external reset switches and simplifying system design.

For enhanced safety and operational reliability, the **240-173** is equipped with a **fail-safe design**, ensuring that the valve defaults to a safe state (normally closed) in the event of a power failure or signal loss. This feature is particularly valuable in applications where system integrity must be maintained at all times, such as in automated packaging lines or robotic assembly systems. The valve s **compact yet sturdy construction** allows for easy integration into tight spaces, while its **universal mounting options** including flange, pipe thread, or direct-mount configurations provide versatility in system design. Whether used in a **2-way or 3-way configuration** (via optional accessories), the **240-173** delivers dependable performance with minimal maintenance, making it a cost-effective solution for a wide range of pneumatic control applications.

Overall, the **ASCO Numatics 240-173 (240173)** stands out as a premium-quality solenoid valve that combines **durability, precision, and versatility** in a single unit. Its robust construction, efficient operation, and adaptability to various control systems make it an excellent choice for engineers and technicians seeking a dependable component for their pneumatic automation needs. Whether in a small-scale laboratory setup or a large industrial facility, this valve ensures consistent, high-performance operation while minimizing downtime and maintenance costs.

The **ASCO Numatics 240-173 (240173)** is a popular solenoid valve used in pneumatic systems for controlling air flow. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the ASCO Numatics 240-173 (240173)**

1. **Reliability and Durability**

The 240 series is known for its robust construction, using high-quality materials like brass and stainless steel components. This makes it suitable for industrial applications where reliability is critical. The valve is designed to withstand frequent cycling without excessive wear.

2. **Wide Compatibility**

It is compatible with most standard pneumatic systems, including those using 1/4" or 3/8" tubing. The valve supports both 24V DC and 24V AC power, making it versatile for different control setups.

3. **Fast Response Time**

The 240 series is designed for quick actuation, which is beneficial in automated systems where rapid air flow control is required. This makes it ideal for applications like clamping, indexing, or quick-release mechanisms.

4. **Easy Installation and Maintenance**

The valve features a straightforward mounting system (e.g., flange or pipe connections) and is designed for easy replacement of internal components if needed. The lack of complex internal mechanisms reduces maintenance time.

5. **Standardized Design**

Being part of a widely used series, spare parts and technical support are readily available. Many engineers and technicians are familiar with its operation, reducing troubleshooting time.

6. **Low Power Consumption**

The 24V solenoid design consumes minimal power, making it energy-efficient for continuous operation in automated systems.

7. **Modularity and Customization**

The 240 series can be paired with additional accessories like pilot valves, timers, or pressure switches, allowing for customized control logic in larger pneumatic systems.

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### **Cons of the ASCO Numatics 240-173 (240173)**

1. **Limited Pressure Rating**

The 240-173 is rated for a maximum working pressure of **100 psi (6.9 bar)**. While this is sufficient for many industrial applications, it may not be adequate for high-pressure systems (e.g., heavy-duty machining or extreme pneumatic tools).

2. **No Built-in Protection Against Overpressure**

Unlike some advanced solenoid valves, the 240-173 lacks integrated pressure relief or overload protection. In systems where sudden pressure spikes could occur, additional safeguards (e.g., pressure regulators or accumulators) may be required.

3. **Basic Control Options**

The valve provides simple on/off control and does not include features like proportional flow control or electronic timing. For applications requiring precise flow modulation, a more advanced valve (e.g., ASCO s 240 series with electronic controls) may be necessary.

4. **Potential for Leakage Over Time**

Like most pneumatic valves, the 240-173 can develop minor leaks over extended use, particularly if the seals degrade. Regular maintenance or replacement of seals may be required to maintain efficiency.

5. **Limited Environmental Resistance**

While the valve is designed for general industrial use, it may not be fully sealed against dust, moisture, or corrosive environments without additional protection (e.g., enclosures or filters). For harsh conditions, a more rugged model (e.g., ASCO s 240 series with NEMA 4X ratings) would be preferable.

6. **Cost of Replacement Parts**

While the valve itself is reasonably priced, some replacement components (e.g., seals, solenoids) may require purchasing directly from ASCO or authorized distributors, which can add to maintenance costs.

7. **No Integrated Diagnostics**

Unlike some modern solenoid valves with built-in fault detection, the 240-173 does not provide feedback on internal failures (e.g., solenoid burnout). This means issues may only be detected during system downtime.

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### **Conclusion**

The **ASCO Numatics 240-173 (240173)** is a **reliable, cost-effective, and widely compatible** solenoid valve suitable for **general-purpose pneumatic applications** where simplicity and durability are prioritized. Its strengths lie in its **fast response, ease of use, and availability of spare parts**, making it a popular choice for automation, manufacturing, and light industrial settings.

However, it is **not ideal for high-pressure systems, environments with extreme conditions, or applications requiring advanced flow control**. If these requirements exist, a more specialized valve (e.g., a proportional valve, a high-pressure model, or one with integrated diagnostics) would be a better fit.

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### **Recommendation**

- You need a **simple, reliable, and cost-effective** solenoid valve for standard pneumatic control.

- Your system operates within **100 psi** and does not require advanced features like proportional flow or diagnostics.

- You prioritize **ease of installation, maintenance, and availability of parts**.

- Your application involves **moderate cycling** (e.g., clamping, indexing, or basic actuation).

- Your system requires **higher pressure ratings** (e.g., >100 psi).

- You need **proportional control, electronic timing, or integrated diagnostics**.

- Your environment is **harsh (high dust, moisture, or corrosive conditions)** opt for a **NEMA 4X or IP65-rated valve** instead.

- You require **long-term low-maintenance operation** explore **seal-upgraded or high-durability models**.

For most **basic pneumatic automation tasks**, the 240-173 remains a **solid, well-supported choice**. However, always verify compatibility with your specific system requirements before purchasing.

Details:

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. Call to use a shipping service other than the ones listed. ASCO 240-173 / 240173 USED NUMATICS ROBOT INTERFACE/SOURCING ASSEMBLY, FOR USE WITH 2012 SERIES SOLENOID PILOT ACTUATED VALVES, 26 PIN 12 MICRO.

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

part #: 240173 price

• $707.93

specifications valvesplumbing:

• brand: Asco Numatics
• mpn: 240-173
• part type: Valve Manifold

general valvesplumbing:

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

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seller valvesplumbing:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 195729
• rating: 99.6%

returns valvesplumbing:

• time: 30 Days
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shipping valvesplumbing:

• transit: 28-33 Days
• type: Fixed
• service: Standard
• class: Standard
• cost: $12.90

offer valvesplumbing:

• availability: In Stock
• started: March 22, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

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