ASCO NUMATICS 228-839 Hydraulics Pneumatics

( Brand: Asco Numatics ), ( Manufacturer Part Number: 228-839 ), ( Part Type: Hydraulic Pneumatic )

Review ASCO NUMATICS 228839 Used

The **ASCO Numatics 228-839** is a high-performance, electrically actuated pneumatic solenoid valve designed for reliable and precise control in industrial automation, manufacturing, and process applications. Part of ASCO s renowned **228 Series**, this normally closed (NC) valve is engineered to deliver exceptional durability, efficiency, and versatility in demanding environments. Constructed from robust materials, including a brass or stainless steel body and a durable plastic or metal housing, the 228-839 is built to withstand harsh conditions, including exposure to moisture, dust, and temperature fluctuations, making it ideal for both cleanroom and rugged factory settings. Its compact yet sturdy design allows for easy integration into existing pneumatic systems, whether in conveyor systems, packaging machinery, or automated assembly lines.

The valve operates on a **24V DC or 110/220V AC** electrical supply, providing consistent and repeatable actuation with minimal power consumption, while its **normally closed (NC) configuration** ensures that air flow is halted when power is removed, enhancing safety and reducing energy waste. The **pilot-operated design** ensures smooth and silent operation, minimizing noise pollution in sensitive environments, while its **quick-exhaust feature** allows for rapid response times, improving overall system efficiency. The valve s **metal-seated construction** guarantees tight sealing and prevents air leakage, maintaining system pressure integrity and reducing operational costs over time.

For enhanced functionality, the 228-839 is available in multiple port configurations, including **2-way, 3-way, or 4-way**, accommodating a wide range of pneumatic circuit requirements. Its **direct-mounting capability** simplifies installation, as it can be directly attached to cylinders, valves, or other pneumatic components without additional fittings. The valve also features **IP65 ingress protection**, shielding internal components from dust, dirt, and water splashes, which is crucial for applications in washdown environments or outdoor installations. Additionally, its **low-maintenance design** minimizes downtime, as it requires no lubrication and has few wear-prone parts, extending its operational lifespan significantly.

ASCO Numatics is a globally recognized leader in pneumatic control solutions, and the **228-839** exemplifies their commitment to innovation and reliability. Whether used in food and beverage processing, automotive manufacturing, or pharmaceutical production, this solenoid valve delivers consistent performance, precise control, and long-term dependability. Its combination of **high-quality materials, efficient operation, and adaptable configurations** makes it a trusted choice for engineers and operators seeking a dependable pneumatic control solution in a wide array of industrial applications.

The **ASCO Numatics 228-839** 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 228-839**

1. **Reliability and Durability**

The 228-839 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 a broad range of pneumatic systems, including those using standard air pressures (typically 80 100 PSI). The valve can be easily integrated into existing setups with minimal modifications.

3. **Easy Installation and Maintenance**

The valve features a straightforward design with a quick-connect fitting system, simplifying installation. It also has a removable coil, making maintenance and replacement of electrical components easier. The valve s compact size allows for flexible placement in tight spaces.

4. **Low Power Consumption**

The coil design is energy-efficient, drawing minimal power when activated. This reduces operational costs, especially in systems with multiple valves.

5. **Versatile Port Configurations**

The 228-839 is available in various port configurations (e.g., 2-way, 3-way, 4-way), allowing it to be tailored to specific applications such as actuating cylinders, controlling clamps, or managing air flow in automation systems.

6. **Good Flow Rate**

The valve provides adequate flow rates for most standard pneumatic applications, ensuring efficient operation of pneumatic actuators and tools.

7. **Positive Sealing**

The internal sealing mechanism ensures minimal air leakage when the valve is off, improving energy efficiency and system performance.

8. **Wide Temperature Range**

The valve can operate effectively in a broad temperature range (typically -20 C to 80 C), making it suitable for environments with varying thermal conditions.

9. **Long Lifespan**

With proper maintenance, the 228-839 can last for many years, reducing the need for frequent replacements and lowering long-term costs.

10. **Aftermarket Support**

ASCO Numatics is a well-established brand with extensive aftermarket support, including readily available replacement parts, technical documentation, and customer service.

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### **Cons of the ASCO Numatics 228-839**

1. **Limited High-Pressure Capability**

While the valve handles standard air pressures well, it may not be ideal for high-pressure applications (above 100 PSI) without additional modifications or reinforcement. This could limit its use in heavy-duty or high-force pneumatic systems.

2. **Sensitivity to Contaminants**

Like many pneumatic valves, the 228-839 can be affected by dirt, moisture, or debris in the air supply. Without proper filtration (e.g., air dryers or filters), contaminants can cause premature wear or failure of the internal seals and moving parts.

3. **Coil Lifespan and Failure Risk**

The electrical coil is a potential weak point. Over time, coils can fail due to thermal stress, voltage fluctuations, or electrical surges. While the coil is removable, frequent replacements may add to maintenance costs.

4. **Noise Generation**

Some users report that the valve can generate audible noise during operation, particularly when the air flow is rapid or the valve is cycling frequently. This may not be an issue in all applications but could be a concern in noise-sensitive environments.

5. **Limited Customization**

The valve s design is standardized, and significant customization (e.g., unique port sizes or specialized sealing materials) may require additional components or modifications, which could increase complexity and cost.

6. **Potential for Leakage Over Time**

Seals in pneumatic valves can degrade with age or exposure to harsh conditions, leading to minor leaks. While the 228-839 is generally tight, regular inspections and maintenance are necessary to prevent performance degradation.

7. **Cost of Replacement Parts**

While ASCO Numatics parts are widely available, some specialized components (e.g., O-rings or seals) may require purchasing directly from the manufacturer, which can be more expensive than generic alternatives.

8. **Not Ideal for Extreme Environments**

While it handles a wide temperature range, the valve may not perform optimally in extreme conditions such as high humidity, corrosive atmospheres, or environments with frequent temperature swings without additional protection.

9. **Learning Curve for Installation**

Although the valve is user-friendly, improper installation (e.g., incorrect wiring, improper sealing, or misalignment) can lead to operational issues. Users unfamiliar with pneumatic systems may require guidance during setup.

10. **Limited Digital or Smart Features**

The 228-839 is a traditional mechanical valve and lacks advanced features such as digital diagnostics, remote monitoring, or integration with IoT platforms. For modern automation systems requiring smart controls, additional interfaces may be needed.

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### **Conclusion**

The **ASCO Numatics 228-839** is a well-regarded solenoid valve that excels in reliability, ease of use, and compatibility with standard pneumatic systems. Its robust construction, low power consumption, and wide temperature range make it a practical choice for many industrial and automation applications. However, it is not without limitations its sensitivity to contaminants, coil lifespan concerns, and lack of advanced features may pose challenges in certain environments or high-demand applications.

For users prioritizing **durability, simplicity, and cost-effectiveness** in standard pneumatic setups, the 228-839 is an excellent choice. However, those operating in **high-pressure, high-contamination, or smart-automation environments** may need to consider additional safeguards, modifications, or alternative valves.

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### **Recommendation**

- You require a **reliable, low-maintenance valve** for standard pneumatic applications (e.g., actuating cylinders, controlling clamps, or basic automation).

- Your system operates within **80 100 PSI** and has **proper air filtration** to protect the valve from contaminants.

- You need a **quick-install, removable-coil design** that simplifies maintenance.

- You prefer a **proven, well-supported brand** with extensive aftermarket availability.

- Your application involves **high pressures (above 100 PSI)** or **extreme temperatures**, where a reinforced or specialized valve may be needed.

- Your environment has **high levels of dust, moisture, or corrosive gases**, requiring additional filtration or sealing solutions.

- You need **smart features, remote monitoring, or digital integration**, as the 228-839 lacks these capabilities.

- You are working with **very high-cycle applications** where coil longevity or wear may become a concern, and you prefer a valve with a longer electrical component lifespan.

For most standard pneumatic tasks, the **228-839 is a solid, cost-effective choice**. Pair it with proper air treatment (filters, dryers) and regular maintenance to maximize its lifespan and performance.

Details:

ASCO 228-839 / 228839 USED SOLENOID, MK55, 120 V, 2-PIN, PLUG-IN, DOUBLE228-839. 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. Sells new and surplus product develops channels to purchase such.

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

part #: 228839 prices

• $54.34-$185.00

specifications generapneumati:

• brand: Asco Numatics
• mpn: 228-839
• part type: Hydraulic Pneumatic

shipping generapneumati:

• transit: 24-37 Days
• cost: $12.90
• type: Fixed
• class: Standard
• service: Standard

seller generapneumati:

• # reviews: 188334
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.5%

payments generapneumati:

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returns generapneumati:

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

general generapneumati:

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

offer generapneumati:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: February 2, 2026
• availability: In Stock

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