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ISO-KF Straight Reducer
ISO-KF Straight Reducer - Image 2

ISO-KF Straight Reducer

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Description

The ISO-KF Straight Reducer is designed to connect two different ISO-KF flange sizes in a straight-line vacuum connection while maintaining reliable sealing and dimensional compatibility. It is available in Aluminium EN AW-6082 T6 / 3.2315, Stainless Steel 304 / 1.4301, and Stainless Steel 316L / 1.4404, with multiple size combinations and standard lengths. The aluminium version is listed for vacuum applications up to 1 × 10⁻⁸ mbar to 500 mbar over pressure, while the stainless steel versions are listed for 1 × 10⁻⁸ mbar to 500 mbar over pressure with elastomer seal and 1 × 10⁻⁹ mbar to 500 mbar over pressure with metal seal.

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Field Data
Product Name ISO-KF Straight Reducer
System ISO-KF
Product Type Straight Reducer
Function Straight connection between two different ISO-KF flange sizes
Material Versions Aluminium EN AW-6082 T6 / 3.2315, Stainless Steel 304 / 1.4301, Stainless Steel 316L / 1.4404
Pressure Range - Aluminium 1 × 10⁻⁸ mbar to 500 mbar over pressure
Pressure Range - Stainless Steel 304 1 × 10⁻⁸ mbar to 500 mbar over pressure (elastomer seal), 1 × 10⁻⁹ mbar to 500 mbar over pressure (metal seal)
Pressure Range - Stainless Steel 316L 1 × 10⁻⁸ mbar to 500 mbar over pressure (elastomer seal), 1 × 10⁻⁹ mbar to 500 mbar over pressure (metal seal)
Temperature Range - Aluminium -196 to 150 °C
Temperature Range - Stainless Steel 304 -196 to 300 °C
Temperature Range - Stainless Steel 316L -196 to 350 °C
Main Dimensions Flange Size, Reducer Flange Size, A, B, C, L
Available Main Flange Sizes 25, 40, 50
Available Reducer Flange Sizes 10, 16, 25, 40
Standard Length Options 28 mm, 40 mm
Aluminium EN AW-6082 T6 / 3.2315
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm) Order No
25 10 40 10 30 28 VC1FTA1AL025-010-28
25 10 40 10 30 40 VC1FTA1AL025-010-40
25 16 40 16 30 28 VC1FTA1AL025-016-28
25 16 40 16 30 40 VC1FTA1AL025-016-40
40 16 55 16 30 28 VC1FTA1AL040-016-28
40 16 55 16 30 40 VC1FTA1AL040-016-40
40 25 55 24 40 28 VC1FTA1AL040-025-28
40 25 55 24 40 40 VC1FTA1AL040-025-40
50 16 75 16 30 28 VC1FTA1AL050-016-28
50 16 75 16 30 40 VC1FTA1AL050-016-40
50 25 75 24 40 28 VC1FTA1AL050-025-28
50 25 75 24 40 40 VC1FTA1AL050-025-40
50 40 75 40 55 28 VC1FTA1AL050-040-28
50 40 75 40 55 40 VC1FTA1AL050-040-40
Stainless Steel 304 / 1.4301
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm) Order No
25 10 40 10 30 28 VC1FTA1SS025-010-28
25 10 40 10 30 40 VC1FTA1SS025-010-40
25 16 40 16 30 28 VC1FTA1SS025-016-28
25 16 40 16 30 40 VC1FTA1SS025-016-40
40 16 55 16 30 28 VC1FTA1SS040-016-28
40 16 55 16 30 40 VC1FTA1SS040-016-40
40 25 55 24 40 28 VC1FTA1SS040-025-28
40 25 55 24 40 40 VC1FTA1SS040-025-40
50 16 75 16 30 28 VC1FTA1SS050-016-28
50 16 75 16 30 40 VC1FTA1SS050-016-40
50 25 75 24 40 28 VC1FTA1SS050-025-28
50 25 75 24 40 40 VC1FTA1SS050-025-40
50 40 75 40 55 28 VC1FTA1SS050-040-28
50 40 75 40 55 40 VC1FTA1SS050-040-40
Stainless Steel 316L / 1.4404
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm) Order No
25 10 40 10 30 28 VC1FTA2SS025-010-28
25 10 40 10 30 40 VC1FTA2SS025-010-40
25 16 40 16 30 28 VC1FTA2SS025-016-28
25 16 40 16 30 40 VC1FTA2SS025-016-40
40 16 55 16 30 28 VC1FTA2SS040-016-28
40 16 55 16 30 40 VC1FTA2SS040-016-40
40 25 55 24 40 28 VC1FTA2SS040-025-28
40 25 55 24 40 40 VC1FTA2SS040-025-40
50 16 75 16 30 28 VC1FTA2SS050-016-28
50 16 75 16 30 40 VC1FTA2SS050-016-40
50 25 75 24 40 28 VC1FTA2SS050-025-28
50 25 75 24 40 40 VC1FTA2SS050-025-40
50 40 75 40 55 28 VC1FTA2SS050-040-28
50 40 75 40 55 40 VC1FTA2SS050-040-40

Aluminium EN AW-6082 T6 / 3.2315
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm)
25 10 40 10 30 28
25 10 40 10 30 40
25 16 40 16 30 28
25 16 40 16 30 40
40 16 55 16 30 28
40 16 55 16 30 40
40 25 55 24 40 28
40 25 55 24 40 40
50 16 75 16 30 28
50 16 75 16 30 40
50 25 75 24 40 28
50 25 75 24 40 40
50 40 75 40 55 28
50 40 75 40 55 40
Stainless Steel 304 / 1.4301
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm)
25 10 40 10 30 28
25 10 40 10 30 40
25 16 40 16 30 28
25 16 40 16 30 40
40 16 55 16 30 28
40 16 55 16 30 40
40 25 55 24 40 28
40 25 55 24 40 40
50 16 75 16 30 28
50 16 75 16 30 40
50 25 75 24 40 28
50 25 75 24 40 40
50 40 75 40 55 28
50 40 75 40 55 40
Stainless Steel 316L / 1.4404
Flange Size (DN) Reducer Flange Size (DN) A (mm) B (mm) C (mm) L (mm)
25 10 40 10 30 28
25 10 40 10 30 40
25 16 40 16 30 28
25 16 40 16 30 40
40 16 55 16 30 28
40 16 55 16 30 40
40 25 55 24 40 28
40 25 55 24 40 40
50 16 75 16 30 28
50 16 75 16 30 40
50 25 75 24 40 28
50 25 75 24 40 40
50 40 75 40 55 28
50 40 75 40 55 40

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