Apex NW Vacuum Flanges & Fittings
The name for best in customer experience
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 Vacuum Fittings are quick and easy to use and assemble into a vacuum system. Sizes range from 10mm (NW10) to 50mm (NW50). Also, Seals are reusable and bakeable to 150°C with Viton O-ring seals (most commonly viton, buna, or silicone).
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 Components are good for rough to high vacuum.
NW Flange Materials
Standard material of construction is 304SS or aluminum. Stainless 316L is available on request. Clamps are usually aluminum as they are not exposed to the process gas but stainless steel are available. O-ring materials are most commonly viton, buna or silicone. Centering rings can be either aluminum or 304 stainless.
Store Product Links
Flange to Flange