EH-9001 9002 9003 Vacuum Flexible Hose

The thin walled ring type flexible hose is extremely soft and flexible and it is the most suitable for the vacuum pipe system. Nominal Diameter: 10mm-300mm Length: 200mm-3000mm Material: SUS304/SUS316/SUS21 Leakage of Helium: below 1*10-9Pa.m3/s.
These KF-40 Metal Hose Bellows Flex Coupling (10 inch, extra thin 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.
 

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