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Swagelok VCR Adapter Fittings

Swagelok VCR Adapter Fittings

Swagelok VCR Adapter Fittings: High-Purity Sealing Solutions for UHV and Specialty Gas Systems

Swagelok VCR Adapter Fittings from TFM deliver uncompromising performance in low-pressure gas and ultra-high vacuum (UHV) systems. Featuring a metal gasket face-seal design, these adapters provide leak-tight, particle-free connections ideal for helium leak checks, lecture bottle setups, cleanroom installations, and bakeable gas systems.

Swagelok VCR adapters are engineered to seamlessly integrate VCR face-seal connections with a variety of fitting terminations, including male/female NPT, weld ends, or tube stub outs, offering system designers the flexibility to connect VCR fittings to virtually any port or component.

Key Features of Swagelok VCR Adapter Fittings:

  • Superior Sealing for Low-Pressure Gas Systems
    VCR adapters create robust, metal-to-metal face seals, ensuring zero elastomer degradation and long-term leak-tight connections, even under thermal cycling.

  • High-Temperature Compatibility

    • With stainless steel gaskets, Swagelok VCR fittings can withstand bakeout temperatures up to 538°C, ideal for UHV and semiconductor-grade systems.

    • With copper gaskets, they maintain tight seals at up to 204°C, offering reliable performance in standard industrial gas plumbing.

  • Ultra-High Vacuum (UHV) Performance
    Designed for environments down to 10⁻⁹ Torr or lower, these fittings are fully compatible with UHV chambers, leak detection systems, and mass spectrometry interfaces.

  • Versatile Connection Options
    TFM’s Swagelok VCR Adapter Fittings are available in a range of terminations, such as:

    • VCR male to female NPT

    • VCR female to weld stub

    • VCR male to Swagelok compression

    • VCR female to KF/CF vacuum flanges

  • Cleanroom and Semiconductor-Ready
    All VCR adapters are machined from 316L stainless steel with surface finishes suitable for high-purity gas delivery systems and corrosive applications.

Applications:

  • “Lecture bottle” gas cylinder connections

  • Helium leak detection interfaces

  • Plasma etch and deposition tool gas inlets

  • High-temperature and UHV-compatible glovebox setups

  • Gas distribution panels in semiconductor cleanrooms

  • Analytical instrumentation, including GC/MS and RGA systems

TFM also supplies a wide range of Swagelok-compatible VCR accessories, including gaskets (stainless steel or copper), nuts, caps, and face-seal glands, providing a complete solution for every stage of system integration and maintenance.

Ordering Table

Material Tube OD 1 Tube OD 2 Part Number
Stainless Steel 0.125 0.25 2MVCR-4FVCR
Stainless Steel 0.25 0.5 4MVCR-8FVCR

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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