These KF-20 DN20 Centering Ring vacuum fittings follow ISO-KF standards and have a flange size of DN-20. 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. The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are NW-10, NW-16, NW-20, NW-25, NW-32, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with Viton O-Ring. Viton is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals.

DN20 KF 20 Measurements:

A: 27 mm

B: 20 mm

C: 8 mm

D: 4 mm