Weld Socket Flange KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, for 1 inch OD tubing. (Sold as One Each)
These KF-25 Weld Socket Flange fittings follow ISO-KF standards and have a flange size of NW-25. They are 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.
Weld Socket Flange
ISO-KF Flange Size: NW-25
For Tubing OD 1 inch
Common Dimensions: A = 1.575"(40mm), B = 1.03"(26.20mm),
C = 1.02"(25.90mm), D = 1.125"(28.60mm), E = 0.50" (12.70mm)
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