KF Vacuum Fittings
Technical Specifications
Flange System: Quick-disconnect clamp mechanism with O-ring sealing
Standard Sizes: DN10/DN16/DN25/DN40/DN50 (metric) or KF10/KF16/KF25/KF40/KF50 (inch-based naming)
Materials:
Flange body: 304/316 stainless steel
Sealing: Viton/Buna/Silicone/EPDM O-rings
Key Components
Symmetrical KF flanges (pair required per connection)
Centering ring (ensures alignment)
Clamp (single-bolt compression design)
Standards Compliance
DIN 28403 (German industrial standard)
ISO 2861 (international equivalent)
GB/T 4982-2003 (Chinese standard for clamp-type connectors)
Application Notes
Designed for 10⁻⁸ mbar vacuum environments
Dominant in semiconductor/plasma cleaning equipment
