SWAGELOK 6L-CW4VR4 Welded Check Valve Integral Male Vcr 1/4 Fitting

( Brand: Swagelok ), ( Manufacturer Part Number: 6L-CW4VR4 ), ( Part Type: Valve Check Fitting ), ( Body Material: Stainless Steel ), ( Diameter: 1/4 In ), ( Country Of Origin: United States )

Review SWAGELOK 1/4 Inch All Welded Check Valve Integral Male Vcr Fitting

The **Swagelok 6L-CW4VR4 1/4" Welded Check Valve with Integral Male VCR Fitting** is a precision-engineered, high-performance fluid control component designed to ensure unidirectional flow while maintaining the integrity of industrial and process systems. This robust valve combines Swagelok s renowned reliability with a compact, welded construction, making it ideal for applications where space efficiency and leak-proof performance are critical. Featuring a **1/4-inch (6.35 mm) nominal size**, this check valve is engineered to handle a wide range of fluids, including gases, liquids, and corrosive media, across a broad temperature and pressure spectrum, typically up to **3000 psi (207 bar) and 400 F (204 C)** depending on the material specification. The **welded design** eliminates the need for threaded or flanged connections, reducing potential leak points and enhancing system durability, particularly in high-vibration or high-pressure environments.

The valve s **integral male VCR fitting** provides a seamless transition to compatible Swagelok tubing or piping, ensuring a secure, vibration-resistant connection without the need for additional fittings or adapters. This feature simplifies installation and maintenance while maintaining the system s overall integrity. The check valve operates on a **spring-loaded ball mechanism**, which swiftly closes upon reverse flow to prevent backpressure, ensuring consistent and reliable performance in critical applications such as hydraulic systems, pneumatic controls, and chemical processing. Constructed from high-quality **316 stainless steel** (standard material), this valve resists corrosion, scaling, and wear, making it suitable for aggressive environments where longevity and performance are paramount.

Beyond its functional excellence, the **6L-CW4VR4** exemplifies Swagelok s commitment to precision engineering, offering a **clean, smooth flow path** that minimizes pressure drop and reduces the risk of clogging or debris accumulation. Its compact footprint and modular design allow for easy integration into existing systems, whether in laboratory setups, industrial automation, or specialized process equipment. Whether used in research and development, manufacturing, or energy applications, this check valve delivers the confidence of a trusted brand Swagelok known for its uncompromising standards in fluid handling technology.

**Pros and Cons of buying a Swagelok 6L-CW4VR4 (1/4" Welded Check Valve with Integral Male VCR Fitting)**

1. **High-Quality Construction** Swagelok is a well-known brand in industrial fluid systems, known for durable, corrosion-resistant materials (typically stainless steel) and precise engineering. This valve is designed for high-pressure and high-temperature applications, making it reliable for demanding environments.

2. **Welded Design** The welded construction ensures a leak-proof connection, reducing the risk of failures due to loose fittings or gasket degradation. This is particularly valuable in critical systems where containment is essential.

3. **Integral VCR Fitting** The built-in male VCR (Vacuum/Compression Ring) fitting allows for easy and secure connection to compatible tubing or fittings without additional tools. VCR fittings are known for their reliability and ease of installation compared to threaded or flared connections.

4. **Check Valve Functionality** The check valve prevents backflow, which is crucial in systems where reverse pressure could cause damage, contamination, or operational failures (e.g., hydraulic systems, gas lines, or fluid transfer applications).

5. **Compatibility with Swagelok Ecosystem** Since Swagelok components are designed to work seamlessly together, this valve can be easily integrated into existing Swagelok systems without compatibility issues. This includes compatibility with Swagelok tubing, fittings, and valves.

6. **Pressure and Temperature Ratings** The 6L series is rated for high-pressure applications (typically up to 6,000 psi or higher, depending on the specific configuration) and can handle a wide temperature range, making it suitable for extreme conditions.

7. **Cleanliness and Contamination Control** Swagelok components are often used in industries where cleanliness is critical (e.g., pharmaceuticals, food processing, or semiconductor manufacturing). The welded design and smooth internal surfaces help minimize particulate contamination.

8. **Long Lifespan** Due to its robust construction and resistance to wear, this valve is designed for long-term use with minimal maintenance, reducing downtime and replacement costs over time.

---

1. **High Initial Cost** Swagelok products are premium-priced compared to generic or lower-end brands. The cost may be prohibitive for small-scale or non-critical applications where budget constraints are a concern.

2. **Specialized Installation Requirements** While VCR fittings are user-friendly, proper installation still requires attention to detail (e.g., correct tubing preparation, proper torque, and alignment). Improper installation can lead to leaks or reduced performance.

3. **Limited Customization** This valve is a standard design with fixed specifications (e.g., 1/4" size, welded body, VCR fitting). If you need non-standard features (e.g., different port configurations, materials, or pressure ratings), you may need to source a different model or custom solution.

4. **Tooling Dependency** Swagelok systems often require specialized tools (e.g., VCR crimping tools, tubing cutters) for proper installation and maintenance. This adds to the overall cost and complexity of working with the system.

5. **Weight and Bulk** The welded stainless steel construction makes the valve heavier and bulkier than alternatives (e.g., threaded or plastic valves). This may be a consideration in space-constrained or portable applications.

6. **Potential for Overkill** For low-pressure or non-critical applications (e.g., simple plumbing or non-industrial fluid transfer), the robustness of a Swagelok valve may be unnecessary, making it an expensive choice for minor uses.

7. **Maintenance Challenges** While Swagelok valves are durable, internal components (e.g., the check valve mechanism) may require periodic inspection or replacement in harsh environments. Accessibility for maintenance can sometimes be limited due to the welded design.

8. **Lead Times** Swagelok parts may have longer lead times compared to generic brands, especially for specialized or discontinued models. This could delay projects if parts are not readily available.

---

The **Swagelok 6L-CW4VR4 (1/4" welded check valve with integral male VCR fitting)** is an excellent choice for **high-pressure, high-reliability applications** where leak-proof performance, durability, and compatibility with Swagelok systems are critical. Its welded construction, check valve function, and VCR fitting make it ideal for industries such as **oil and gas, chemical processing, pharmaceuticals, aerospace, or hydraulic systems**. However, its **high cost, specialized installation requirements, and potential over-engineering for less demanding applications** may make it less suitable for budget-conscious or low-pressure projects.

- You are working in an **industrial, high-pressure, or critical fluid system** where reliability and leak prevention are non-negotiable.

- You are already using a **Swagelok system** and need a compatible component.

- Your application involves **corrosive fluids, extreme temperatures, or environments where generic valves would fail**.

- You prioritize **long-term durability and minimal maintenance** over initial cost.

- Your application is **low-pressure, non-critical, or cost-sensitive** (e.g., simple plumbing, DIY projects, or non-industrial uses).

- You lack access to **proper installation tools** or expertise.

- You need **custom or non-standard specifications** that Swagelok does not offer.

- You can find a **lower-cost alternative** (e.g., threaded check valves, plastic valves, or other brands) that meets your requirements.

For most **professional, high-stakes fluid systems**, the Swagelok valve is a **worthwhile investment**. For casual or non-industrial uses, exploring **more affordable alternatives** may be a better financial decision. Always ensure the valve s **pressure, temperature, and material ratings** align with your specific application before purchasing.

Details:

Minor Scratches. Please see pictures for further. 1/4 Swagelok 6L-CW4VR4 All Welded Check Valve Integral Male VCR Fittings, Used. Removed from process in working condition.

part #: 6lcw4vr4 prices

• $50.00-$100.00

specifications valvesplumbing:

• brand: Swagelok
• mpn: 6l-cw4vr4
• part type: Valve Check Fitting
• body material: Stainless Steel
• diameter: 1/4 In
• country of origin: United States

payments valvesplumbing:

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

seller valvesplumbing:

• # reviews: 389
• rating: 100.0%
• city: York, Maine

shipping valvesplumbing:

• cost: $18.37
• carrier: UPS
• transit: 3-7 Days
• service: UPS Ground
• type: Calculated
• class: Standard

general valvesplumbing:

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

returns valvesplumbing:

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

offer valvesplumbing:

• started: April 13, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• best offers: True

Swagelok 6L-CW4VR4 Is Similar To:

• 177-13k-r4-a Swagelok New Lot High Pressure Relief Valve Spring Kit (40.6% similar) Lot 10 x Swagelok 177-13K-R4-A relief valve spring kit new package free fast shipping...(May 10th, 2018)
• 6l-e4hat4a-54 Swagelok Nupro Excess Flow Valve Max Open Psig (38.2% similar) This offer is for 1 unit. This includes internal photographs, if relevant. If you prefer to ask your question privately, please let us know. Photos: we attempt to take photos that show the important features, parts, labels, connections, defects, scuffs, scratches and imperfections of each item. This...(March 9th, 2018)
• 6lv-2-vcr-3s-2tb7p Swagelok (15.5% similar) 6LV-2-VCR-3S-2TB7P Swagelok 325 PCs 316L var vcr fitting, short BTW gland, 1/8 in. 1MM ext, SC-01 cleaned. 028 in vcr x 1...(February 24th, 2019)
• 6lv-8-vcr-3-8tb7p Swagelok (15.7% similar) Shipping within USA only...(July 2nd, 2018)
• 6lv-e4hb-580-m4 Swagelok Nupro Excess Flow Valve Max Open Psig (37.7% similar) None have ever been used and or installed. This offer is for 1 unit. Photos: we attempt to take photos that show the important features, parts, labels, connections, defects, scuffs, scratches and imperfections of each item. This includes internal photographs, if relevant. I am starting this offer ...(March 9th, 2018)
• 6lvv-a61vd2dp-asas-nv Swagelok New Diaphragm Valve Manifold Adl Sealed (34.2% similar) Connection 3 type vcr metal gasket face seal SWG01 40141600ECLASS 27271500ECLASS condition: brand new sealed box Swagelok diaphragm valve manifold part no: 6LVV-A61VD2DP-ASAS-NV 316L vim-var Aldo 1-VALVE 3-PORT mono block, 1/4 in. Connection 2 type female vcr metal gasket face seal fitting ...(October 26th, 2018)
• 6lvv-dpfr4-p1 Swagelok Manual Valve Fvcr (34.5% similar) Over order from past job. All in original package. Priced individually. Packaging should be the same as what is found in a retail store, unless item handmade or was packaged by manufacturer non-retail packaging, such an unpainted box plastic bag. Swagelok small diaphragm valve 6LVV-DPHFR4-P1-BL 1/4 ...(August 16th, 2018)
• 6lvv-dpmr4-p-c Swagelok Diaphragm Sealed Valve (34.4% similar) Swagelok up diaphragm sealed VALVE1 4 in male vcr nc ACTUATOR6LVV-DPMR4-P-C...(October 4th, 2017)
• 6lvv-msm-ald3e-3-p-cs Swagelok New Diaphragm Valve In Box Sealed (35.7% similar) 1/3 7011801UNSPSC 40141621UNSPSC condition: brand new sealed in box genuine Swagelok diaphragm valve Aldo 3-PORT stainless steel part no: 6LVV-MSM-ALD3E-3-P-CS modular platform components, spring less valve, c-seal, nc actuator, SC-01 cleaned fast safe free domestic shipping Inc 13D1004 ...(October 26th, 2018)
• 6lw-dplvr4-p Swagelok Locking Vcr Valves (29.3% similar) 4 Swagelok 1 valves 6LV-DPLVR4-P, brand new double bagged and sealed...(August 27th, 2018)
• B-18vf6 Swagelok New Brass Valve (31.5% similar) To USA address only. You are buying on a new Swagelok valve. Any questions just ask. I do combine shipping when possible. Shipping and handling is...(February 28th, 2018)