KF® Systems

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ISO KF quick-release connections are available in sizes ranging from NW10/16 to NW50, as per ISO standards. Additionally, EVAC offers a unique KF NW63 size, complete with suitable seals (elastomer or aluminum) and chain clamps.

Typically, an inner- or outer-centered elastomer seal (or an aluminum seal for special applications) is placed between two flanges, with sealing achieved via a chain clamp. Flanges are available in both stainless steel and glass (Duran® or quartz).

The KF standard is predominantly used for applications ranging from rough to high vacuum, with pressures up to 10E-9 mbar (100 nPa) or peak pressures up to 20 bar (2 MPa), depending on the flange diameter, seal material, and the geometry of the center ring. Inner center rings are utilized for vacuum applications, while outer center rings are preferred for overpressure situations. Combination rings are also available for scenarios where both vacuum and overpressure conditions may occur.

Using steel KF flanges with aluminum edge-type seals, the vacuum range can be extended to 10E-11 mbar (1 nPa), with a peak pressure capacity of up to 50 bar (5 MPa).

Features

Available Size
NW 16-63, NW 80-250
*Customized size available on request
Over Pressure
Up to 300 Bar with CeFiX Ni Seals & Clamps
Temperature
-271C to 450C with Ni Seals & Clamps
Vacuum

Customised Solutions

We provide customised solutions including KF Chain Clamps, SS Bellows, custom adaptors and fittings. Contact us for expert guidance tailored to your needs.

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EVAC ISO CeFiX® flanges

NW 16 … 250

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EVAC ISO CeFiX® Chain Clamps

NW 16…63.

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EVAC ISO CeFiX® seals

EVAC ISO CeFiX® seals NW 16…250

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EVAC ISO CeFiX® fittings

EVAC ISO CeFiX® fittings NW 16…250.

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