SWAGELOK R3A-A Relief Valve Aftl Manual Steel Bar Air Water 3.4-24.1

( Brand: Swagelok ), ( Manufacturer Part Number: R3A-A ), ( Part Type: Valve Manual Bar ), ( Suitable Media: Air, Water ), ( Body Material: Stainless Steel ), ( Maximum Adjustable Pressure: 24.1 Bar ), ( Minimum Adjustable Pressure: 3.4 Bar ), ( Valve Operation: Manual )

Review SWAGELOK Relief Valve Aftl Manual Stainless Steel 3.4-24.1 Bar Air Water

The **Swagelok R3A-A Relief Valve (AFTL Manual, Steel, 3.4 24.1 bar)** is a robust, high-performance pressure relief solution engineered for critical applications where precision, reliability, and safety are paramount. Designed with Swagelok s signature engineering excellence, this manual relief valve is built to protect pneumatic and hydraulic systems from excessive pressure buildup, ensuring operational integrity in environments where air, water, or other compatible fluids are present. Constructed from high-quality **316 stainless steel**, the valve body resists corrosion, chemical degradation, and wear, making it ideal for demanding industrial, laboratory, or field applications where durability is non-negotiable. Its **AFTL (Air, Fuel, and Lubrication) certification** confirms its suitability for use with compressed air, water, and other non-corrosive gases, while its **manual operation** provides operators with direct control, allowing for precise pressure adjustments when needed.

The relief valve operates within a **set pressure range of 3.4 to 24.1 bar (50 to 350 psi)**, offering versatility for systems requiring moderate to high-pressure protection. Its **adjustable spring mechanism** ensures accurate pressure relief settings, minimizing the risk of overpressure events while maintaining system efficiency. The valve s **steel construction** is complemented by a **sealed, corrosion-resistant design**, which prevents leakage and extends service life even in humid or contaminated environments. The **threaded connections** (typically -inch NPT or equivalent, depending on configuration) ensure a secure, leak-proof fit, reducing the potential for system failures due to improper sealing.

Ideal for applications such as **pneumatic test stands, hydraulic systems, laboratory instrumentation, and industrial process control**, the Swagelok R3A-A delivers both functionality and peace of mind. Its **compact yet sturdy build** allows for easy integration into existing setups without compromising performance. Whether used in research facilities, manufacturing plants, or field operations, this relief valve stands as a dependable safeguard against pressure-related hazards, ensuring that systems operate within safe parameters while maintaining optimal performance. With Swagelok s reputation for precision engineering and reliability, this valve is a trusted choice for professionals who demand nothing less than excellence in pressure management.

### **Pros and Cons of buying a Swagelok R3A-A Relief Valve (AFTL, Manual, Steel, 3.4 24.1 bar, Air/Water)**

#### **Pros**

1. **Reliable Brand Reputation** Swagelok is a well-established manufacturer known for high-quality, durable industrial components, particularly in fluid handling and pressure control systems. Their products are widely trusted in industries like oil & gas, pharmaceuticals, and manufacturing.

2. **Manual Operation** The manual relief valve allows for precise control without requiring external power or automation. This makes it suitable for applications where power sources may be unreliable or where manual intervention is preferred.

3. **Wide Pressure Range (3.4 24.1 bar)** The valve is designed to handle moderate pressure levels, making it versatile for various air and water systems, including compressed air lines, hydraulic systems, or low-pressure water relief applications.

4. **AFTL (Air, Fuel, Lubricating Oil) Compatibility** The valve is rated for use with air, water, and lubricating oils, expanding its applicability beyond just air systems. This versatility reduces the need for multiple specialized valves.

5. **Steel Construction** The steel body provides durability and resistance to corrosion, making it suitable for industrial environments where robustness is critical. This material choice also ensures longevity, especially in harsh conditions.

6. **Standardized Design** Swagelok components are designed to fit seamlessly into existing systems that use their fittings and connectors, reducing compatibility issues and installation time.

7. **Safety Feature** Relief valves are essential for preventing overpressure in systems, which can lead to catastrophic failures. This valve helps protect downstream equipment and personnel by releasing excess pressure when needed.

8. **Easy Maintenance** Manual relief valves are generally straightforward to inspect, adjust, or replace. The design often allows for quick disassembly without requiring specialized tools.

9. **Industrial-Grade Quality** Swagelok valves are built to meet strict industry standards, ensuring consistent performance and reliability over extended periods.

10. **Warranty and Support** Purchasing from Swagelok typically comes with warranty coverage and access to technical support, which can be invaluable for troubleshooting or replacements.

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#### **Cons**

1. **Higher Upfront Cost** Swagelok products are premium-priced compared to generic or aftermarket alternatives. For applications where cost is a major constraint, this could be a significant drawback.

2. **Limited Pressure Range** The valve s pressure range (3.4 24.1 bar) may be too low for high-pressure industrial applications. Users requiring higher pressures (e.g., above 24 bar) would need a different model.

3. **Manual Operation Limitations** While manual operation is advantageous in some cases, it can be less convenient in automated or high-throughput systems where remote or automated control is preferred. This may require additional actuators or controllers.

4. **Specialized Installation** Swagelok fittings often require specific tools (e.g., Swagelok wrenches) and expertise for proper installation. Improper installation could lead to leaks or reduced performance.

5. **Potential Overkill for Low-Demand Applications** If the application involves very low-pressure or non-critical systems, a more affordable generic relief valve might suffice without sacrificing reliability.

6. **Maintenance Dependency** Like all mechanical components, manual relief valves require periodic inspection and maintenance to ensure they function correctly. Neglecting maintenance could lead to failures when they are most needed.

7. **Limited Customization** Swagelok valves are designed for standard applications. Custom modifications (e.g., unique pressure settings, specialized materials) may require additional costs or third-party adjustments.

8. **Weight and Bulk** The steel construction makes the valve heavier and bulkier than plastic or lightweight alternatives, which could be a consideration in space-constrained environments.

9. **Potential for Misuse** If not properly sized or installed for the specific application, the valve may not perform optimally. For example, using it in a system with fluctuating pressures without proper sizing could lead to premature wear or failure.

10. **Dependence on Swagelok Ecosystem** If the system relies heavily on Swagelok components, switching to other brands later could create compatibility issues, increasing long-term costs.

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### **Conclusion**

The **Swagelok R3A-A relief valve** is an excellent choice for applications requiring **reliable, durable, and high-quality pressure relief** in systems handling air, water, or lubricating oils within the 3.4 24.1 bar range. Its **manual operation, steel construction, and compatibility with Swagelok s ecosystem** make it ideal for industrial, commercial, or laboratory settings where safety and longevity are priorities.

However, the **higher cost, limited pressure range, and need for proper installation/maintenance** may not justify the purchase for **low-pressure, non-critical, or budget-sensitive applications**. If the system does not require Swagelok s brand-specific advantages, a more affordable alternative might be sufficient.

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### **Recommendation**

- You are working in an **industrial or high-reliability environment** where Swagelok s quality and compatibility are essential.

- Your system operates within the **3.4 24.1 bar range** and requires manual pressure relief for air, water, or lubricating oils.

- You prioritize **long-term durability, ease of maintenance, and integration with existing Swagelok systems**.

- Budget constraints are not a major concern, and the **premium price aligns with your project s requirements**.

- Your application involves **higher pressures (above 24.1 bar)** or **extreme conditions** where a specialized valve would be more appropriate.

- You are working with a **tight budget** and can find a **reputable generic relief valve** that meets your needs without sacrificing safety.

- The system is **low-pressure or non-critical**, and a simpler, lower-cost solution would suffice.

- You require **automated or remote-controlled relief**, in which case a **pilot-operated or electrically actuated valve** would be more suitable.

For most **industrial, laboratory, or commercial applications** where reliability and safety are paramount, the Swagelok R3A-A is a **strong recommendation**. However, always verify the **specific pressure requirements, system compatibility, and long-term cost** before making a final decision.

Details:

Swagelok Relief Valve AFTL R3A-A Manual Stainless Steel 3.4-24.1 bar Air Water.

part #: r3a prices

• $56.30-$499.99

specifications valvesplumbing:

• brand: Swagelok
• mpn: R3a-a
• part type: Valve Manual Bar
• suitable media: Air, Water
• body material: Stainless Steel
• maximum adjustable pressure: 24.1 Bar
• minimum adjustable pressure: 3.4 Bar
• valve operation: Manual

seller valvesplumbing:

• # reviews: 64
• rating: 100.0%
• city: Boise, Idaho

shipping valvesplumbing:

• service: USPS Priority Mail Small Flat Rate Box
• transit: 4-9 Days
• type: Calculated
• carrier: USPS
• class: Expedited
• cost: $9.80

offer valvesplumbing:

• started: January 31, 2026
• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1

general valvesplumbing:

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

returns valvesplumbing:

• policy: No Returns

payments valvesplumbing:

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

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