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CF to Quick-Connect Couplings

CF to Quick-Connect Couplings

CF to Quick-Connect Couplings: UHV-Compatible Adapters for Precision Connectivity

The CF to Quick-Connect Couplings from TFM are high-performance adapters engineered to bridge ConFlat (CF) flanges with standard quick-connect tubing interfaces, enabling fast, secure, and vacuum-tight connections to a wide variety of instrumentation and fluidic subsystems. Constructed from 304 stainless steel, these adapters deliver the robustness and cleanliness needed in ultra-high vacuum (UHV) and high-purity process environments.

Each adapter features a knife-edge CF flange—available in standard sizes such as CF16, CF35, and CF63—on one end, and a precision-machined smooth outer diameter (O.D.) tube on the other. The O.D. tube is designed to integrate seamlessly with compression fittings, elastomer-sealed quick-connects, or coupling sleeves, supporting vacuum compatibility while simplifying maintenance and modularity.

Key Features of CF to Quick-Connect Couplings:

  • UHV-Compatible CF Flange Interface
    The knife-edge CF flange provides a metal-to-metal seal using copper gaskets, ensuring leak-tight performance down to 10⁻¹¹ Torr, ideal for demanding high-vacuum applications.

  • Smooth O.D. Tube for Quick Coupling
    The opposite end features a standard-size cylindrical tube, designed to mate with most commercially available quick-connect couplings, compression glands, or O-ring sealed clamps.

  • 304 Stainless Steel Construction
    Delivers excellent corrosion resistance, mechanical stability, and cleanroom compatibility—well-suited for bake-outs and chemically aggressive environments.

  • Instrumentation Integration
    Ideal for use with tubulated ion gauges, thermocouple sensors, and pressure transducers, allowing direct connection to diagnostic or control lines without welding or threading.

  • Dual Coupling Options Available
    Some configurations feature dual tube outlets to enable parallel fluid flow or circulation loops, supporting thermal regulation or gas exchange in complex systems.

Applications:

  • Direct connection of gauges, mass spectrometers, or viewports to vacuum systems

  • Modular fluid loops for coolant lines or reactive gas injection

  • Quick integration into UHV beamlines, surface analysis chambers, or thin-film deposition systems

  • Retrofitting vacuum systems with non-threaded diagnostic ports

  • Ideal for semiconductor fabs, accelerator labs, and photonics research

In addition to CF to quick-connect variants, TFM also offers a full suite of KF to coupling adapters, weldable ports, and custom interface fittings to support a fully integrated vacuum infrastructure.

In conclusion, the CF to Quick-Connect Couplings by TFM deliver uncompromised sealing, fast tool-free connections, and full UHV compatibility—making them the trusted choice for advanced scientific and industrial vacuum applications.

Ordering Table

Flange Size/OD Type Drawing Nominal Tube OD Dim A Part Number
DN16CF (1.33" OD) Single Tooltip 1/8 — F0133XVC012
DN16CF (1.33" OD) Single Tooltip 1/4 — F0133XVC025
DN16CF (1.33" OD) Single Tooltip 3/8 — F0133XVC037
DN16CF (1.33" OD) Single Tooltip 1/2 — F0133XVC050
DN35CF-DN40CF (2.75" OD) Dual Tooltip 1/4 0.93 F0275X2VC025
DN35CF-DN40CF (2.75" OD) Dual Tooltip 3/8 0.98 F0275X2VC037
DN35CF-DN40CF (2.75" OD) Single Tooltip 1/8 — F0275XVC012
DN35CF-DN40CF (2.75" OD) Single Tooltip 1/4 — F0275XVC025
DN35CF-DN40CF (2.75" OD) Single Tooltip 5/16 — F0275XVC031
DN35CF-DN40CF (2.75" OD) Single Tooltip 3/8 — F0275XVC037
DN35CF-DN40CF (2.75" OD) Single Tooltip 1/2 — F0275XVC050
DN35CF-DN40CF (2.75" OD) Single Tooltip 5/8 — F0275XVC062
DN35CF-DN40CF (2.75" OD) Single Tooltip 3/4 — F0275XVC075
DN35CF-DN40CF (2.75" OD) Single Tooltip 7/8 — F0275XVC087
DN35CF-DN40CF (2.75" OD) Single Tooltip 1 — F0275XVC100
DN35CF-DN40CF (2.75" OD) Single Tooltip 1-1/8 — F0275XVC112
DN35CF-DN40CF (2.75" OD) Single Tooltip 1-1/4 — F0275XVC125
DN35CF-DN40CF (2.75" OD) Single Tooltip 1-3/8 — F0275XVC137
DN35CF-DN40CF (2.75" OD) Single Tooltip 1-1/2 — F0275XVC150
DN63CF (4.50" OD) Single Tooltip 3/4 — F0450XVC075
DN63CF (4.50" OD) Single Tooltip 1 — F0450XVC100
DN63CF (4.50" OD) Single Tooltip 1-1/2 — F0450XVC150
DN100CF (6.00" OD) Single Tooltip 3/4 — F0600XVC075
DN100CF (6.00" OD) Single Tooltip 1-1/2 — F0600XVC150
DN160CF (8.00" OD) Single Tooltip 3/4 — F0800XVC075

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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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