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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
Fast Entry Door with Viewport, 95mm Viewing Diameter, CF152 Flange
SKU: FED100
The quick-load door facilitates manual loading of samples into and out of the vacuum chamber and is widely used in different systems. The injection door is equipped with a spring-loaded handle locking device. The unique patented design (utility model patent number: 201720665992.9) avoids excessive internal pressure and damage to the pre-extraction chamber. The regular version of this product is sealed with an elastic Viton O-ring, suitable for vacuum up to 10-8 mbar, and the window material is replaceable quartz glass. This product is suitable for all CF flanges and can be docked with other equipment. • UHV Rated to 10-8 mbar • Bakeable to 150℃ • Spring-loaded locking mechanism • With Viewport • O-ring seal ...more
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£ 1,486.00 1486.0 GBP
Viewport Shutter, Swing Type, 100% Full Coverage, 67mm Aperture, CF100 ID / 152mm OD Flange
SKU: VPS100ST
Some operations in the vacuum system may cause damage to the window. For example, metal evaporation in ultra-high vacuum systems can cause the surface of the window to be coated, making the inner surface of the window a reflective mirror. This results in the need to remove the window and clean the surface before reuse. To overcome this problem, we provide a series of window baffles. We provide lamella shutter and shutter shutters to choose from. Shutter shutters are aimed at large observation ports. The advantage is that the shutter opening movement traces are smooth and the amplitude is small. ...more
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£ 1,232.00 1232.0 GBP
Viewport Shutter, Venetian Type, 67mm Aperture, CF152 Flange
SKU: VPS100VB
Some operations in the vacuum system may cause damage to the window. For example, metal evaporation in ultra-high vacuum systems can cause the surface of the window to be coated, making the inner surface of the window a reflective mirror. This results in the need to remove the window and clean the surface before reuse. To overcome this problem, we provide a series of window baffles. We provide lamella shutter and shutter shutters to choose from. Shutter shutters are aimed at large observation ports. The advantage is that the shutter opening movement traces are smooth and the amplitude is small. ...more
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£ 1,739.00 1739.0 GBP
CF100 Zero Length Viewport
SKU: VPZ100
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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