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CF to Swagelok VCO® Adapter

CF to Swagelok VCO® Adapter

CF to Swagelok VCO® Adapter: Leak-Tight UHV Connections Between ConFlat and VCO® Systems

The CF to Swagelok VCO® Adapter from TFM is engineered to bridge the gap between ConFlat (CF) vacuum flanges and Swagelok VCO® face seal fittings, enabling a secure, high-purity, and leak-free transition for demanding applications. Whether you’re interfacing vacuum chambers with instrumentation or connecting UHV systems to precision gas delivery lines, this adapter offers performance and reliability in one streamlined component.

VCO® (Vacuum Coupling Orbitally-welded) fittings feature a flat-face, O-ring seal that is compressed axially between a male connector and a gland, producing a torque-free seal that’s ideal for high-purity, high-cycle systems. The CF end delivers metal gasket sealing for ultra-high vacuum performance down to 10⁻⁹ torr.

Key Features of CF to Swagelok VCO® Adapter:

  • CF to VCO® Interface
    Connects UHV-grade CF flanges (such as DN16CF, DN35CF, DN63CF) to Swagelok VCO® face seal connectors—available in both male and female configurations.

  • UHV Compatibility
    The CF flange utilizes knife-edge sealing with copper gaskets, making it suitable for bakeable, leak-tight operation in ultra-high vacuum environments.

  • VCO® Face Seal Reliability
    Swagelok VCO® fittings use a replaceable O-ring on the male face, compressed against a polished gland surface to provide high-integrity, repeatable sealing with minimal dead volume.

  • 304 Stainless Steel Construction
    Built for chemical resistance, high-temperature durability, and compatibility with cleanroom and process-grade applications.

  • Custom Terminations Available
    Choose from straight or elbow adapters, different flange sizes, or gland genders depending on system needs. Custom versions with electropolishing, passivation, or alternate alloys are also available upon request.

Applications:

  • Connecting UHV vacuum systems to high-purity gas delivery infrastructure

  • Process tool instrumentation for semiconductor and analytical systems

  • Modular R&D chambers requiring repeatable disconnection and reconfiguration

  • Hybrid vacuum/process setups combining face-seal and metal gasket interfaces

  • Leak-tight transfer of inert or reactive gases in vacuum-integrated environments

TFM also offers CF to Swagelok VCR® adapters, CF to NPT and tube compression fittings, and a comprehensive inventory of gaskets, flanges, and hardware kits to support any vacuum or clean process build.

In conclusion, the CF to Swagelok VCO® Adapter provides a high-purity, UHV-compatible solution for interfacing two of the most trusted connection standards in scientific and industrial applications. Designed with versatility and performance in mind, this adapter is an indispensable component for any advanced vacuum system or process integration platform.

Ordering Table

Flange Size/OD Type Drawing Fitting Part Number
DN16CF (1.33" OD) Female Tooltip 1/4" VCO F0133X4FVCO
DN16CF (1.33" OD) Male Tooltip 1/4" VCO F0133X4MVCO
DN16CF (1.33" OD) Female Tooltip 3/8" VCO F0133X6FVCO
DN16CF (1.33" OD) Male Tooltip 3/8" VCO F0133X6MVCO
DN16CF (1.33" OD) Female Tooltip 1/2" VCO F0133X8FVCO
DN16CF (1.33" OD) Male Tooltip 1/2" VCO F0133X8MVCO
DN35CF-DN40CF (2.75" OD) Male Tooltip 1/4" VCO F0275X4MVCO
DN35CF-DN40CF (2.75" OD) Female Tooltip 1/2" VCO F0275X8FVCO

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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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