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CF Fittings

CF Fittings


CF Vacuum Fittings on this site comply with the ISO 3669 standard and CF Vacuum Fittings up to NW200 are compatible with ConFlat flanges and CF flanges from other leading manufacturers.

While there is no general standard for CF flanges NW250 and over, essentially two “standards” have come into use, one Anglo-American and one European, both of which are available in our product line. Other standards are also used by some other manufacturers and in use at some research centres.

Due to UHV bakeability requirements, sealing of the CF flanges is provided by use of Oxygen-free copper (OFHC) flat gasket rings which usually can only be used once due to deformation. The tightening pressure is exerted by through-bore screws that have to be tightened uniformly and crosswise to avoid excessive strain.

  • Material: 304L stainless steel as standard, 316L and other materials can be supplied upon request
  • Bakeable to 450°C
  • Vacuum rating 1×10-11mbar
  • Wide ranges of elbows, crosses, tees and adaptors are available
  • Tubulated flanges are available for welding to stainless steel tube
Viewport Shutter Pneumatic, Swing Type, 100% Full Coverage, 96mm Aperture, CF152 ID / 203mm OD Flange
SKU: VPS150ST
Some operations inside a vacuum system can cause harm or damage to a viewport. For example, evaporation of metals in the UHV system can cause the viewport surface to become quickly coated, resulting in a mirror reflective surface. Removal and cleaning of the viewport will then be necessary before reusing it. To overcome these problems, we offer a range of viewport shutters, both Full-Coverage Swing Type and Venetian Blind Type (the latter being especially useful where a low profile when opened is preferable). ...more
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£ 1,580.00 1580.0 GBP
CF150 Zero Length Viewport
SKU: VPZ150
CF Zero length Viewports are used to view the interior of the vacuum chamber and view the process and/or manipulation. Manufactured from: 304L stainless steel. Helium Leak tested to 10-10 mbar. They are supplied in a sealed plastic bag with protective plastic caps. The CF Zero-length Viewport is manufactured to the CF Standard and is compatible with other supplier’s product. • Material: Kodial • Bakeable up to 200°C at not greater than 2-3 °C per minute • To be used with annealed copper gaskets • Vacuum Rating 1×10-11 mbar ...more
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£ 466.66 466.66 GBP