SMC EX122-SPR1-B Valves Manifolds

( Brand: Smc ), ( Manufacturer Part Number: EX122-SPR1-B ), ( Part Type: Valve Manifold )

Review SMC Ex122spr1b Used

The **SMC EX122-SPR1-B (EX122SPR1B)** is a high-performance, compact solenoid valve designed for precise pneumatic control in industrial automation, robotics, and manufacturing applications. Part of SMC s advanced EX series, this normally closed (NC) valve features a robust, corrosion-resistant construction with a stainless steel body and aluminum housing, ensuring durability in demanding environments where exposure to moisture, dust, or harsh chemicals is a concern. Engineered for reliability, the EX122-SPR1-B operates at a rated pressure of up to 10 bar (145 psi) and maintains a stable flow rate of 200 L/min (7.06 CFM) at 6 bar (87 psi), making it ideal for medium to high-volume air control systems. Its spring-return design provides immediate response and consistent operation, reducing energy consumption while minimizing wear over extended use.

The valve incorporates SMC s **SPR (Spring-Return Pilot) technology**, which enhances responsiveness and reduces pilot pressure requirements, resulting in more efficient system performance. The compact, modular design allows for easy integration into existing pneumatic circuits, with standard M5 threaded connections and a 1/4" NPT pilot port for seamless compatibility with other SMC components. The EX122-SPR1-B is equipped with a **dual-coil configuration**, enabling bidirectional control either normally closed (NC) or normally open (NO) via software or external switching while maintaining a low power draw of just 2.5W, reducing operational costs. Its **IP65-rated enclosure** ensures protection against dust and water splashes, making it suitable for both cleanroom and outdoor industrial applications.

Beyond its technical specifications, the EX122-SPR1-B excels in versatility, accommodating a wide range of working media, including compressed air, nitrogen, and dry gases, provided they meet the valve s material compatibility standards. The valve s **low noise emission** and smooth operation contribute to quieter workflow environments, while its **quick-disconnect fittings** simplify maintenance and reduce downtime. Whether deployed in CNC machining, packaging systems, or automated assembly lines, this solenoid valve delivers consistent, repeatable performance with minimal maintenance, reinforcing SMC s reputation for precision engineering in pneumatic automation. Its compact footprint and modular design further enhance its appeal for engineers seeking space-efficient yet high-performance solutions.

### **Pros and Cons of buying a SMC EX122-SPR1-B (EX122SPR1B) Solenoid Valve**

The **SMC EX122-SPR1-B** is a **2-way, normally closed (NC) pneumatic solenoid valve** commonly used in automation, packaging, and industrial applications. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros**

1. **High Reliability and Durability**

- SMC is a well-established brand known for robust, long-lasting pneumatic components. The EX122 series is designed for frequent cycling, making it suitable for high-demand applications.

- The valve features a **sealed internal structure**, reducing wear and tear from contaminants in the air supply.

2. **Compact and Space-Efficient Design**

- The **EX122** series is compact, allowing for easier integration into tight spaces in machinery or control panels.

- The **SPR1-B** variant includes a **quick-release coupling**, simplifying installation and maintenance.

3. **Energy Efficiency**

- The valve operates on **low power consumption** (typically 24V DC or 120V AC), making it cost-effective for continuous use.

- It incorporates **low-leakage technology**, reducing wasted compressed air.

4. **Easy Installation and Maintenance**

- The **quick-connect fittings** (SPR1-B model) allow for fast disassembly without tools, speeding up maintenance.

- The valve is **self-diagnostic** many SMC models include status LEDs for quick troubleshooting.

5. **Compatibility with SMC s Control Systems**

- Works seamlessly with **SMC s PLCs, proportional valves, and control modules**, making it ideal for automated systems.

- Supports **digital and analog control** via SMC s **VACUUM and PNEUMATIC control interfaces**.

6. **Wide Operating Range**

- Suitable for **pressures up to 10 bar (145 psi)**, making it versatile for various pneumatic applications.

- Operates reliably in **temperature ranges of -10 C to 60 C**, though performance may vary with extreme conditions.

7. **Low Noise Operation**

- Designed to minimize operational noise, which is beneficial in cleanroom or noise-sensitive environments.

8. **Cost-Effective for High-Volume Use**

- While the upfront cost is moderate, its **longevity and efficiency** reduce long-term maintenance expenses.

---

### **Cons**

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

- The **EX122** is a **medium-flow valve** (typically **20 L/min at 6 bar**), which may be insufficient for **high-speed or large-scale pneumatic systems**.

- For applications requiring **higher airflow**, larger models (e.g., EX222 or EX322 series) may be necessary.

2. **Dependence on Clean Air Supply**

- Like most pneumatic valves, it **requires filtered, dry air** to prevent clogging or damage. Poor air quality can reduce lifespan.

- Contaminants (oil, moisture, particles) can lead to **sticking or reduced responsiveness**.

3. **Single-Pole Operation (Normally Closed Only)**

- The **NC (Normally Closed) configuration** means it requires power to open. If power fails, the valve will default to closed, which may not be ideal for all safety-critical applications.

- A **normally open (NO) or double-acting (DC) valve** (e.g., EX122-SPR2-B) may be needed for different control requirements.

4. **Limited Customization Options**

- The **EX122-SPR1-B** is a standard model with **fewer customizable features** compared to some competitors (e.g., adjustable flow rates, built-in pressure regulators).

- Additional accessories (e.g., filters, lubricators) may be required for specific applications.

5. **Potential for Leakage Over Time**

- While SMC valves are durable, **seals degrade with age**, potentially leading to **minor air leaks**, especially if not maintained properly.

- Regular **lubrication and inspection** are recommended to prevent this.

6. **Higher Initial Cost Than Basic Valves**

- Compared to **basic solenoid valves from lesser-known brands**, the SMC EX122-SPR1-B is **pricier**, though the investment is justified by reliability.

- For **budget-sensitive applications**, alternatives like **Festo or ASCO valves** may offer similar performance at a lower cost.

7. **Requires Proper Wiring and Control Setup**

- Incorrect wiring (e.g., wrong voltage, polarity) can **damage the coil** or cause erratic operation.

- Users must ensure **proper control signal compatibility** (e.g., 24V DC, 120V AC) with their system.

8. **Limited Global Availability of Spare Parts**

- While SMC has a **strong global distribution network**, **rare spare parts or obsolete models** may take longer to source compared to more widely available brands.

---

### **Conclusion**

The **SMC EX122-SPR1-B** is an **excellent choice** for applications requiring **reliable, compact, and efficient pneumatic control** in **medium-flow scenarios**. Its **durability, ease of maintenance, and compatibility with SMC s ecosystem** make it a **premium option** for industrial automation, packaging, and general pneumatic systems.

However, if the application demands **high flow rates, customizable settings, or cost-sensitive solutions**, alternative models (e.g., **EX222, EX322, or third-party brands**) may be more suitable. Additionally, **proper air filtration and maintenance** are critical to maximizing its lifespan.

---

### **Recommendation**

You need a **reliable, compact, and low-maintenance** solenoid valve for **medium-flow pneumatic applications**.

Your system is **already using SMC components**, ensuring seamless integration.

You prioritize **longevity and efficiency** over absolute cost savings.

The application does **not require extremely high flow rates** (consider **EX222 or EX322** if needed).

You require **higher flow rates** (e.g., **EX222, EX322, or Festo s MPPE series**).

You need **normally open (NO) or double-acting (DC) operation** (e.g., **EX122-SPR2-B**).

Budget is a **major constraint** (e.g., **ASCO or Norgren valves** may offer similar performance at a lower cost).

Your system has **extreme environmental conditions** (consider **specialized industrial valves** with higher temperature/pressure ratings).

For **most standard pneumatic control applications**, the **SMC EX122-SPR1-B is a strong, dependable choice** that justifies its cost with **long-term reliability and ease of use**. Ensure proper **air filtration, wiring, and maintenance** to extend its operational life.

Details:

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. SMC EX122-SPR1-B / EX122SPR1B USED DISCONTINUED BY MANUFACTURER, PROFIBUS-DP SI UNIT, 4.1 AMP, 2.1 W, 16 OUTPUT, DIN RAIL MOUNT. 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.

Part Number EX122-SPR1-B. Sells new and surplus product develops channels to purchase such.

part #: ex122spr1 prices

• $199.99-$480.09

specifications valvesplumbing:

• brand: Smc
• mpn: Ex122-spr1-b
• part type: Valve Manifold

general valvesplumbing:

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

shipping valvesplumbing:

• cost: $12.90
• service: Standard
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seller valvesplumbing:

• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 193993

offer valvesplumbing:

• options: Ship-to-home
• started: March 10, 2026
• quantity: 1
• sold: 0
• availability: In Stock

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