NW Flanges and Flittings

Vacuum fittings and flanges ISO,NW and conflat

Apex Vacuum NW Flanges & Fittings

The name for best in customer experience

Elbow joint
Valves

NW  (also known as KF & QF)

NW Vacuum Flanges and Fittings are quick releases and are great in rough vacuum to high vacuum applications. NW Fittings are quick and easy to use and assemble into a vacuum system. Sizes range from 10mm (NW10) to 50mm (NW50). Seals are reusable and bakeable to 150°C with Viton O-ring seals.

Is there difference between NW, KF or QF?

No!  NW, KF (from Klein Flansche) and QF are the same types of vacuum flange systems. KF is more popular in Europe, while NW is more used in North America. QF refers to Quick Flange, a descriptive name for its properties.

NW Flange Materials

Standard material of construction is 304SS or aluminum. Clamps are usually aluminum as they are not exposed to the process gas. O-ring materials are viton, buna or silicone. Centering ring can be either aluminum or 304 stainless.

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Valve