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Rotatable Tapped-Bored 316LN SS Standard ConFlat® (CF) UHV Flanges

Rotatable Tapped-Bored 316LN SS Standard ConFlat® (CF) UHV Flanges

Rotatable Tapped-Bored 316LN SS Standard ConFlat® (CF) UHV Flanges are high-performance, precision-engineered components used in ultra-high-vacuum (UHV) systems for creating sealed connections between vacuum chambers, pipes, and other components. These flanges are designed for applications requiring extreme cleanliness, vacuum integrity, and corrosion resistance, particularly in research, semiconductor, and industrial vacuum environments.

Key Features

  • Material: Constructed from 316LN stainless steel, a low-carbon variant of 316 stainless steel, ensuring superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for UHV systems.

  • ConFlat® Design: The ConFlat® (CF) flange system uses a metal-to-metal seal, providing a leak-tight connection with excellent sealing capabilities under high vacuum conditions.

  • Rotatable Feature: The flanges are designed to be rotatable, allowing for precise alignment of the attached components in vacuum systems, which is particularly useful when adjusting the position of elements or optimizing system configurations.

  • Tapped-Bored Construction: Features pre-tapped and bored holes for easy integration into existing vacuum systems, simplifying assembly and reducing the need for additional hardware.

  • Standard Dimensions: Adheres to the standard ConFlat® flange dimensions, ensuring compatibility with a wide range of vacuum equipment and accessories.

  • High-Quality Finish: The flange is finely machined and polished to achieve a smooth, contaminant-free surface for UHV applications, reducing the risk of particulate contamination and ensuring optimal vacuum performance.

Applications

  • Semiconductor Manufacturing: Used in the fabrication of semiconductor devices, where precise vacuum conditions are crucial for processes such as deposition, etching, and ion implantation.

  • Research and Development: Ideal for vacuum systems used in scientific research, including particle accelerators, electron microscopes, and high-energy physics experiments, where ultra-high vacuum environments are essential.

  • Materials Science: Commonly used in high-vacuum systems for thin-film deposition, sputtering, and coating applications in the materials science industry.

  • Aerospace and Automotive: Suitable for industries that require precise vacuum conditions for testing and development of high-performance materials.

  • Pharmaceutical and Chemical Industries: Used in specialized applications that require precise vacuum conditions for processing chemicals, pharmaceuticals, and coatings.

Why Choose TFM’s Rotatable Tapped-Bored 316LN SS Standard ConFlat® (CF) UHV Flanges?

  • Superior Durability: Made from 316LN stainless steel, offering excellent corrosion resistance and ensuring long-lasting performance in challenging vacuum environments.

  • Leak-tight Seal: The ConFlat® flange system provides a secure, leak-tight connection, critical for maintaining UHV conditions.

  • Precision and Flexibility: The rotatable feature allows for exact alignment and adjustments, while the tapped-bored holes make integration into vacuum systems seamless.

  • High-Quality Manufacturing: Manufactured to meet the highest standards of precision, cleanliness, and vacuum integrity for demanding UHV applications.

  • Custom Options: Available in various sizes and configurations to suit specific system requirements, with the option to customize dimensions and features.

Conclusion

ConFlat flanges are essential components in high vacuum and ultra-high vacuum systems. Their reliability, versatile configurations, and the material options available, such as 316LN stainless steel, make them a trusted choice for engineers and technicians working in demanding environments.

Ordering Table

Flange Size/OD Type Note Part Number
DN16CF (1.33" OD) Rotatable Tapped F0133N075RMLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N100RMLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N150RMLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N150RTLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N162RMLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N162RTLN
DN35CF-DN40CF (2.75" OD) Rotatable Tapped F0275N175RMLN
DN50CF (3.38" OD) Rotatable Tapped F0337N200RMLN
DN50CF (3.38" OD) Rotatable Tapped F0337N200TLN
DN63CF (4.50" OD) Rotatable Tapped F0450N250RMLN
DN63CF (4.50" OD) Rotatable Tapped F0450N250RTLN
DN63CF (4.50" OD) Rotatable Tapped F0450N275RMLN
DN75CF (4.63" OD) Rotatable Tapped F0462N300RMLN
DN100CF (6.00" OD) Rotatable Tapped F0600N400RMLN
DN100CF (6.00" OD) Rotatable Tapped F0600N400RTLN
DN160CF (8.00" OD) Rotatable Tapped F0800N600RMLN
DN160CF (8.00" OD) Rotatable Tapped F0800N600RTLN
DN160CF (8.00" OD) Rotatable Tapped F0800N608RMLN
DN200CF (10.00" OD) Rotatable Tapped F1000N800RMLN
DN200CF (10.00" OD) Rotatable Tapped F1000N800RTLN
DN250CF (12.00" OD) Rotatable Tapped F1200N1000RMLN
DN250CF (12.00" OD) Rotatable Tapped F1200N100RTLN
DN275CF (13.25" OD) Rotatable Tapped F1325N1000RMLN

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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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