Half Nipple Long Weld Stub KF-25, Vacuum Fittings, 1.0 In. OD Tube, (Length 1.57 in.) ISO-KF Flange Size NW-25, SS (Sold as One Item)
These KF-25, 1.0 inch O.D. tube, Half Nipple Long Weld Stub 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.
Half Nipple Long Weld Stub
ISO-KF Flange Size: NW-25
Common Dimensions: A= 40 mm, B= 26.20 mm, C= 22.10 mm, D= 25.40 mm (1.0 in.), E= 40 mm (1.57 in.)