NUPRO SS-58S8 Swagelok Steel Lift Check Valve 2.20CV 1/2 R32AS5837B

( Brand: Nupro ), ( Manufacturer Part Number: SS-58S8 ), ( Part Type: Valve Lift Check ), ( Unit Type: Unit )

Review NUPRO Swagelok Stainless Steel Lift Check Valve 1/2 Inch

The **Swagelok SS-58S8 Nupro Steel Lift Check Valve (Part #R32AS5837B)** is a precision-engineered, high-performance flow control component designed for demanding industrial applications where reliability, durability, and leak-tight integrity are paramount. Constructed from **316 stainless steel (SS-58)**, this valve combines the robustness of Swagelok s renowned metal-seated design with the versatility of Nupro s lift-check mechanism, making it an ideal choice for systems handling corrosive, abrasive, or high-purity fluids including refrigerants like R-32, cryogenic gases, chemicals, and pharmaceutical-grade media. The valve s **1/2-inch (12.7 mm) nominal size** and **2.20 CV (Cv) flow coefficient** ensure efficient, low-pressure-drop operation while maintaining strict containment, preventing backflow and ensuring unidirectional flow with minimal resistance. Its **lift-check design** features a robust stainless steel ball and seat assembly, which is both self-cleaning and resistant to seat wear, reducing maintenance requirements and extending operational lifespan. The valve s **threaded (NPT) male connections** on both ends provide a secure, leak-proof interface, while the **integrated Swagelok-style ferrule system** ensures a tight seal without the need for additional gaskets or adhesives. Built to withstand pressures up to **6,000 psi (41.4 MPa)** and temperatures ranging from **-320 F to 800 F (-196 C to 427 C)**, this valve excels in extreme environments, including cryogenic, vacuum, and high-temperature applications. Its **smooth, unobstructed flow path** minimizes turbulence and reduces the risk of clogging, making it particularly suitable for sensitive processes where particle contamination must be avoided. Additionally, the valve s **compact yet sturdy construction** allows for easy integration into tight piping layouts, while its **metal-to-metal sealing** eliminates the risk of elastomer degradation or failure over time. Whether deployed in **semiconductor manufacturing, gas processing, medical gas delivery, or refrigeration systems**, the Nupro SS-58S8 delivers consistent, leak-free performance with minimal operational friction, reinforcing Swagelok s reputation for engineering solutions that meet the most exacting industry standards.

### **Pros and Cons of buying a Nupro SS-58S8 Swagelok Steel Lift Check Valve (2.20CV, 1/2" R32AS5837B)**

1. **High-Quality Construction** Made from **316 stainless steel**, this valve is durable, corrosion-resistant, and suitable for aggressive chemicals, high temperatures, and high-pressure applications. The material ensures long-term reliability in demanding environments.

2. **Swagelok Compatibility** Designed to fit seamlessly into **Swagelok fittings and systems**, reducing the need for adapters or additional hardware. This compatibility simplifies installation and maintenance in existing setups.

3. **Lift Check Valve Design** The **lift check valve mechanism** prevents backflow while allowing forward flow, which is critical in **pneumatic, hydraulic, or gas delivery systems** where reverse pressure could cause damage or contamination.

4. **Pressure Rating (2.20CV)** The **2.20CV (200 psi at 70 F)** rating makes it suitable for moderate to high-pressure applications, though it may not be ideal for extreme high-pressure systems without reinforcement.

5. **Standardized Sizing (1/2")** The **1/2" port size** is common in many industrial and laboratory systems, making it easy to integrate into existing piping layouts.

6. **Sealed Actuation** The **sealed lift mechanism** reduces the risk of leakage at the valve stem, improving system integrity.

7. **Easy Maintenance** The design allows for **simple disassembly and cleaning**, which is beneficial in applications where residue buildup (e.g., in chemical or pharmaceutical processes) is a concern.

8. **Wide Industry Use** Commonly used in **semiconductor, pharmaceutical, oil & gas, and laboratory settings**, ensuring availability of spare parts and technical support.

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1. **Limited Pressure Rating** While 200 psi is sufficient for many applications, it may be **too low for high-pressure systems** (e.g., above 300 psi), requiring a heavier-duty valve.

2. **Stainless Steel Limitations** Although 316 stainless steel is corrosion-resistant, it is **not ideal for extremely aggressive chemicals** (e.g., strong acids or oxidizing agents over long periods) without additional coatings or materials.

3. **Potential for Stem Leakage** If the **seal deteriorates over time**, it could lead to minor leaks, requiring periodic inspection and maintenance.

4. **Cost Compared to Alternatives** Swagelok/Nupro valves are **premium-priced** compared to generic or non-branded check valves, which may not justify the expense for low-pressure or non-critical applications.

5. **Specialized Installation** Requires **proper Swagelok tooling** (e.g., wrenches, torque settings) for correct installation, which may not be available in all settings.

6. **Not Ideal for Extreme Temperatures** While stainless steel handles moderate heat well, **very high temperatures (above 400 F)** may require specialized materials or reinforced designs.

7. **Potential for Clogging** If used in **particulate-laden systems**, debris could accumulate in the valve seat, requiring more frequent cleaning.

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### **Conclusion**

The **Nupro SS-58S8 Swagelok Steel Lift Check Valve (1/2", 2.20CV)** is a **highly reliable, durable, and industry-standard component** best suited for **moderate to high-pressure applications** where **corrosion resistance, leak prevention, and Swagelok compatibility** are critical. It excels in **clean environments** (e.g., labs, semiconductor, pharmaceutical) but may not be the best choice for **extreme pressure, high-temperature, or highly corrosive conditions** without modification.

### **Recommendation**

- You need a **Swagelok-compatible, stainless steel check valve** for **moderate-pressure (up to 200 psi) applications** in **chemical, gas, or laboratory systems**.

- Your system requires **reliable backflow prevention** without excessive maintenance.

- You prioritize **long-term durability and ease of integration** with existing Swagelok fittings.

- Your application involves **pressures above 300 psi**, where a **heavier-duty valve (e.g., SS-58S8 with reinforced body or a ball check valve)** may be needed.

- You are working with **extremely corrosive chemicals** that may require **hastelloy, titanium, or coated valves**.

- Budget constraints exist, and a **lower-cost generic check valve** (with proper testing) could suffice for non-critical applications.

For most **standard industrial, lab, or gas delivery systems**, this valve is a **strong, well-supported choice**. However, always verify **specific pressure, temperature, and chemical compatibility** with the manufacturer s documentation before final purchase.

Details:

Swagelok NUPRO SS-58S8 Stainless Steel Lift Check Valve 2.20Cv 1/2 R32AS5837B.

part #: ss58s8 prices

• $160.65-$254.15

specifications valvesplumbing:

• brand: Nupro
• mpn: Ss-58s8
• part type: Valve Lift Check
• unit type: Unit

payments valvesplumbing:

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

returns valvesplumbing:

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

general valvesplumbing:

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

seller valvesplumbing:

• # reviews: 3222
• city: Kennesaw, Georgia
• rating: 100.0%

shipping valvesplumbing:

• transit: 3-6 Days
• carrier: FedEx, UPS
• type: Fixed
• cost: $9.00
• class: Economy, Standard, One-day
• service: FedEx Ground Economy, UPS Ground, UPS Next Day Air

offer valvesplumbing:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: February 27, 2026

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