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Zero-Length Reducer ConFlat® (CF) UHV Flanges (Standard)

Reducer Flange Characteristics

When adapting knife-edge flanges of varying sizes, it’s essential to understand their unique features:

  • Bolt Hole Design: Smaller flanges typically come with blind tapped bolt holes, while larger flanges often incorporate through-holes. In instances where the diameters of the two flanges are similar, both flanges will be tapped.
  • Part Numbering: Any part number that concludes with the letter “T” indicates that the flange is a double-tapped variant, ensuring additional fastening options.

Ordering Table

Flange Size/OD Note Part Number
DN200CF (10.00" OD) — RF1000X133
DN200CF (10.00" OD) — RF1000X212
DN200CF (10.00" OD) — RF1000X275
DN200CF (10.00" OD) — RF1000X337
DN200CF (10.00" OD) — RF1000X450
DN200CF (10.00" OD) — RF1000X462
DN200CF (10.00" OD) — RF1000X600
DN200CF (10.00" OD) — RF1000X800
DN275CF (13.25" OD) — RF1325X1000
DN275CF (13.25" OD) — RF1325X133
DN275CF (13.25" OD) — RF1325X212
DN275CF (13.25" OD) — RF1325X275
DN275CF (13.25" OD) — RF1325X337
DN275CF (13.25" OD) — RF1325X450
DN275CF (13.25" OD) — RF1325X462
DN275CF (13.25" OD) — RF1325X600
DN275CF (13.25" OD) — RF1325X800
DN25CF (2.13" OD) — RF212X133T
DN35CF-DN40CF (2.75" OD) — RF275X133
DN35CF-DN40CF (2.75" OD) — RF275X212T
DN50CF (3.38" OD) — RF337X133
DN50CF (3.38" OD) — RF337X212T
DN50CF (3.38" OD) — RF337X275T
DN63CF (4.50" OD) — RF450X133
DN63CF (4.50" OD) — RF450X212
DN63CF (4.50" OD) — RF450X275
DN63CF (4.50" OD) — RF450X337T
DN75CF (4.63" OD) — RF462X133
DN75CF (4.63" OD) — RF462X212
DN75CF (4.63" OD) — RF462X275
DN75CF (4.63" OD) — RF462X337
DN100CF (6.00" OD) — RF600X133
DN100CF (6.00" OD) — RF600X212
DN100CF (6.00" OD) — RF600X275
DN100CF (6.00" OD) — RF600X337
DN100CF (6.00" OD) — RF600X450
DN100CF (6.00" OD) 1 RF600X462
DN125CF (6.75" OD) — RF675X133
DN125CF (6.75" OD) — RF675X212
DN125CF (6.75" OD) — RF675X275
DN125CF (6.75" OD) — RF675X337
DN125CF (6.75" OD) — RF675X450
DN125CF (6.75" OD) — RF675X462
DN125CF (6.75" OD) — RF675X600T
DN160CF (8.00" OD) — RF800X133
DN160CF (8.00" OD) — RF800X212
DN160CF (8.00" OD) — RF800X275
DN160CF (8.00" OD) — RF800X337
DN160CF (8.00" OD) — RF800X450
DN160CF (8.00" OD) — RF800X462
DN160CF (8.00" OD) — RF800X600
DN250CF (12.00" OD) — RF1200X1000

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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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