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Home/FITTINGS/Bellows Hose Metal KF-40, 10 Inch, Medium Wall Tubing, ISO-KF Flange Size NW-40, Stainless Steel

Bellows Hose Metal KF-40, 10 Inch, Medium Wall Tubing, ISO-KF Flange Size NW-40, Stainless Steel

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Bellows Hose Metal KF-40, 10 Inch, Medium Wall Tubing, ISO-KF Flange Size NW-40, Stainless Steel

These KF-40 Metal Hose Bellows Flex Coupling (10 inch, medium wall) vacuum fittings follow ISO-KF standards and have a flange size of NW-40. They are unsheathed and butt welded. Commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.

KF-40 Metal Hose Bellows Flex Coupling, Medium Wall
ISO-KF Flange Size: NW-40
Spring Rate: 9.6 lb/in
Common Dimensions: A = 9.84" (250mm)

ChemrazDataSheet_4.pdf (ChemrazDataSheet_4.pdf, 866 Kb) [Download]

EVAC_FLanges.pdf (EVAC_FLanges.pdf, 1,288 Kb) [Download]