ISO-KF · FLANGES & FITTINGS
ISO-KF AISI 304 Stainless Steel Reducer
ZEROVAC ISO-KF stainless-steel reducers provide a compact, removable transition between vacuum connections of different nominal sizes. The AISI 304 / EN 1.4301 construction integrates pumps, chambers and process lines across six size combinations.
- Connection Standard
- ISO-KF
- Size Range
- DN 25/16 - DN 50/40
- Axial Length
- 40 mm
- Material
- AISI 304 / EN 1.4301
- Leak Rate
- < 1 × 10⁻⁹ mbar·L/s
TECHNICAL DRAWING · DIMENSIONS · ORDER CODES
Reducer dimensions and order codes
A is the overall axial length and ØB is the internal diameter on the smaller connection side.
Scroll horizontally to review every published dimension and order code.
| ISO-KF | A (mm) | ØB (mm) | Material | Order Code |
|---|---|---|---|---|
| DN 25/16 | 40 | 16 | AISI 304 / EN 1.4301 | 211281 |
| DN 40/16 | 40 | 16 | AISI 304 / EN 1.4301 | 211282 |
| DN 40/25 | 40 | 26 | AISI 304 / EN 1.4301 | 211283 |
| DN 50/16 | 40 | 16 | AISI 304 / EN 1.4301 | 211323 |
| DN 50/25 | 40 | 26 | AISI 304 / EN 1.4301 | 211324 |
| DN 50/40 | 40 | 40 | AISI 304 / EN 1.4301 | 211284 |
Connection standard: ISO-KFMaterial: AISI 304 / EN 1.4301Leak rate: < 1 × 10⁻⁹ mbar·L/s
INSTALLATION NOTE
Keep the connection and sealing faces clean and undamaged. Confirm both nominal sizes, use the matching centering rings and clamps, and avoid mechanical stress across the transition.