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CF to ISO-K Adapter Flanges

CF to ISO-K Adapter Flanges: Precision Interfaces Between UHV and ISO Standard Flanges

CF to ISO-K Adapter Flanges by TFM are designed to provide a seamless connection between ConFlatĀ® (CF) and ISO-K flange systems, allowing vacuum engineers to integrate components from different international standards into a unified assembly. These adapters are manufactured from high-purity 304 stainless steel, ensuring durability, corrosion resistance, and compatibility with both high vacuum (HV) and ultra-high vacuum (UHV) environments.

Each adapter flange features one knife-edge CF flange, ideal for copper gasket sealing in UHV systems, and one ISO-K flange, suitable for o-ring sealing with ISO clamps. This combination supports flexible flange interfacing without the need for permanent modifications or welding.

Key Features of CF to ISO-K Adapter Flanges:

  • Cross-Standard Flange Integration
    Connects CF flanges (e.g., CF40, CF63) to ISO-K flanges (e.g., ISO63, ISO100), supporting a wide range of vacuum system requirements.

  • 304 Stainless Steel Construction
    All CF to ISO-K Adapter Flanges are machined from 304 stainless steel tubing and flanges, providing mechanical strength and chemical resistance in cleanroom and baked-out systems.

  • UHV to HV Transition Support
    The CF side supports vacuum levels down to 10ā»ā¹ to 10ā»Ā¹ā° torr, while the ISO-K side provides compatibility with standard HV elastomer sealing systems.

  • Tool-Free ISO-K Connections
    The ISO-K flange can be quickly fastened with claw-type or double clamps, making installation and reconfiguration simple and efficient.

  • Standard and Custom Configurations
    TFM offers multiple common size pairings, as well as custom CF to ISO-K Adapter Flanges upon request to match unique project specifications.

Applications:

  • Integrating UHV-rated CF components with ISO-K vacuum chambers

  • Retrofitting older ISO-based setups with modern CF hardware

  • Connecting CF-sealed instruments to ISO-K foreline or pump interfaces

  • Supporting research platforms using hybrid European and American flange standards

  • Enabling flexible reconfiguration in analytical, coating, and beamline systems

TFM also provides a complete line of CF flanges, ISO-K hardware, custom adapters, and all required clamps and gaskets to ensure leak-tight and structurally sound connections across flange systems. The CF to ISO-K Adapter Flanges simplify system integration without compromising vacuum performance.

Ordering Table

CF to ISO-K Adapter Flanges

Flange Size/OD Drawing Nominal Tube OD Flange Adapter Dim A Part Number
DN63CF (4.50" OD) Tooltip 2-1/2 ISO63 4.31 F0450XQF63
DN100CF (6.00" OD) Tooltip 4 ISO100 4.37 F0600XQF100
DN100CF (6.00" OD) Tooltip 3 ISO80 4.37 F0600XQF80
DN160CF (8.00" OD) Tooltip 6 ISO160 4.44 F0800XQF160
DN200CF (10.00" OD) Tooltip 8 ISO200 4.44 F1000XQF200

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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.

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

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  • 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 pipeā€™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.

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  • 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.

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  • 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 mechanismsā€”pneumatic, electric, or hydraulicā€”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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