SMC AW40K-F04-8-B Filter Regulator Relief Valve Lock AW40K-F04D-8-B VHS40-F04B

( Brand: Smc ), ( Manufacturer Part Number: AW40K-F04-8-B ), ( Type: Pneumatic )

Review SMC Filter Regulator Relief Valve Lock Out

The **SMC AW40K-F04-8-B** and **AW40K-F04D-8-B** series, paired with the **VHS40-F04B** relief valve and **lock**, represent a sophisticated and versatile pneumatic control solution designed for applications requiring precise pressure regulation, filtration, and protection against system overpressure. These components form part of SMC s high-performance **AW40K** series of air preparation units, engineered to deliver clean, dry, and stable compressed air essential for critical automation, robotics, and industrial processes. The **AW40K-F04-8-B** and **AW40K-F04D-8-B** models are compact yet robust filter-regulator combinations, featuring a **0.01 m absolute filtration** (in the case of the **F04D** variant, which includes an additional **coalescing filter** for superior particulate and moisture removal) to ensure the elimination of contaminants that could compromise pneumatic system efficiency or damage sensitive equipment. The **8-B** designation indicates a **1/4" NPT male inlet and outlet connection**, making these units compatible with standard pneumatic piping systems while maintaining a compact footprint ideal for space-constrained environments. The integrated **pressure regulator** within these units provides precise control over downstream air pressure, with an adjustable range of **0.2 to 10 bar (29 to 145 psi)**, allowing operators to tailor performance to specific application demands. The **VHS40-F04B relief valve**, when paired with these filter-regulators, acts as a critical safety component, automatically venting excess pressure to prevent system overloading, equipment damage, or hazardous conditions. This valve is designed to engage at a set maximum pressure (adjustable within the unit s range) and is equipped with a **locking mechanism** to ensure the relief setting remains secure, reducing the risk of accidental misadjustment. Together, these components form a cohesive air preparation system that not only enhances the reliability of pneumatic actuators, cylinders, and valves but also extends the operational lifespan of downstream machinery by mitigating the effects of contaminated or unstable air supply. Ideal for industries such as automotive assembly, packaging, food and beverage processing, and robotics, this setup exemplifies SMC s commitment to delivering precision-engineered solutions that balance performance, durability, and ease of integration into existing pneumatic architectures.

### **Pros and Cons of buying a SMC AW40K-F04-8-B, AW40K-F04D-8-B (Filter Regulator) and VHS40-F04B (Relief Valve) Together**

1. **Compatibility and System Integration**

- These components are designed to work together as part of SMC s AW40K series pneumatic system. The filter regulator (AW40K-F04-8-B or AW40K-F04D-8-B) and relief valve (VHS40-F04B) are engineered to fit seamlessly into the same piping configuration, reducing installation complexity and ensuring proper airflow regulation.

2. **Consistent Pressure Control**

- The filter regulator (AW40K-F04-8-B or AW40K-F04D-8-B) provides precise pressure adjustment, ensuring stable pneumatic operation. The integrated relief valve (VHS40-F04B) protects the system from overpressure, preventing damage to downstream components.

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

- The AW40K series is known for its compact footprint, making it ideal for applications where space is limited. The combination of filter, regulator, and relief valve in a modular setup reduces the need for additional fittings or junction blocks.

4. **Durability and Reliability**

- SMC components are built with high-quality materials and undergo rigorous testing, ensuring long-term performance in industrial environments. The AW40K series is particularly robust, suitable for continuous operation in manufacturing, automation, and other demanding applications.

5. **Easy Maintenance and Replacement**

- The modular design allows for individual component replacement without disrupting the entire system. The filter can be cleaned or replaced, the regulator adjusted, and the relief valve tested or recalibrated independently.

6. **Standardized Components**

- Since these parts are part of SMC s standard product line, they are widely available from authorized distributors, reducing lead times and ensuring compatibility with other SMC equipment.

7. **Energy Efficiency**

- The integrated filter removes contaminants, improving system efficiency by reducing wear on downstream components. The regulator ensures only the required pressure is supplied, minimizing energy waste.

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1. **Cost**

- Purchasing these components as a set (or individually) can be more expensive than generic or aftermarket alternatives, especially for small-scale or low-budget applications. However, the long-term reliability often justifies the investment.

2. **Specialized Knowledge Required**

- While SMC components are user-friendly, proper installation and maintenance (e.g., filter replacement, regulator calibration) may require technical expertise. Improper setup could lead to system inefficiencies or failures.

3. **Limited Customization**

- The AW40K series offers standard configurations, which may not accommodate highly specialized pressure or flow requirements without additional modifications or accessories.

4. **Potential Overkill for Simple Applications**

- If the application does not require the full range of features (e.g., high-pressure relief or advanced filtration), a simpler, less expensive unit might suffice. However, the AW40K series is versatile enough for most industrial uses.

5. **Dependence on SMC s Support Network**

- While SMC has a strong global support system, some users in remote or less developed regions may face challenges in accessing authorized service centers for repairs or spare parts.

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### **Conclusion**

The **SMC AW40K-F04-8-B / AW40K-F04D-8-B filter regulator and VHS40-F04B relief valve** combination is an excellent choice for applications requiring **reliable, modular, and integrated pneumatic control**. The benefits of **seamless integration, pressure stability, durability, and ease of maintenance** outweigh the minor drawbacks of **higher upfront cost and the need for technical know-how**.

- Industrial automation systems

- Manufacturing plants with pneumatic actuators

- Applications requiring consistent pressure regulation and overpressure protection

If budget is a concern but reliability is critical, the investment in SMC s branded components will likely pay off in reduced downtime and extended equipment lifespan.

### **Recommendation**

- You need a **high-quality, integrated pneumatic solution** for an industrial or automation application.

- You prioritize **long-term reliability, ease of maintenance, and system compatibility**.

- Your budget allows for **premium, standardized components** that reduce long-term operational risks.

- Your application is **low-pressure or simple**, and cost is a major constraint.

- You have **in-house expertise** to troubleshoot and maintain non-branded components.

For most professional or large-scale users, **SMC s AW40K series remains the best choice** for performance, support, and longevity.

Details:

In good working condition. Used in very good condition. Smc AW40K-F04D-8-B Filter Regulator With VHS40-F04B Relief Valve Lock Out. Please see the pictures for condition and details.

part #: aw40kf048 prices

• $30.75-$44.99

specifications generapneumati:

• brand: Smc
• mpn: Aw40k-f04-8-b
• type: Pneumatic

shipping generapneumati:

• carrier: UPS, FedEx
• class: Standard, One-day
• service: UPS Ground, UPS Next Day Air Saver, FedEx Standard Overnight
• cost: $0.00
• transit: 3-5 Days
• type: Calculated

payments generapneumati:

• other
• wallet: Google-pay
• credit card: Discover

general generapneumati:

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

returns generapneumati:

• policy: Returns Accepted
• method: Money back
• paid by: Buyer
• time: 14 Days

offer generapneumati:

• sold: 0
• availability: In Stock
• best offers: True
• quantity: 1
• started: February 22, 2026
• options: Ship-to-home

seller generapneumati:

• city: North Manchester, Indiana
• # reviews: 10154
• rating: 99.9%

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