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Activair.cz > Products > Vacuum componets – ISO-KF (NW), ISO-K, ISO-F, CF > CF Flanges & Components > Zero- Length Reducer Flanges > Zero- Length Reducer Flanges (Standard)
Zero- Length Reducer Flanges (Standard)
Adapt two different-size knife-edge flanges that need to be bolted together.
Reducer Flange Features
- All small flanges have blind tapped bolt holes — most large flanges have through-holes (where the two flanges have similar diameters, both are tapped)
- Part numbers ending with the letter "T" represent double-tapped flanges
- The maximum I.D. of the small flange limits the bore
| Flange Size | Bore | Flange Thickness | Flange Size (large) | Flange Thread (Small/Large) | Weight kg |
| DN16CF | 15.8 | 24.6 | DN200CF | 8-32 & TH | 9.07 |
| DN25CF | 25.4 | 24.6 | DN200CF | 1/4-28 & TH | 9.07 |
| DN35CF-DN40CF | 38.1 | 24.6 | DN200CF | 1/4-28 & TH | 9.07 |
| DN50CF | 50.8 | 24.6 | DN200CF | 5/16-24 & TH | 9.07 |
| DN63CF | 63.5 | 24.6 | DN200CF | 5/16-24 & TH | 8.39 |
| DN75CF | 76.2 | 24.6 | DN200CF | 5/16-24 & TH | 8.39 |
| DN100CF | 101.6 | 24.6 | DN200CF | 5/16-24 & TH | 7.71 |
| DN160CF | 152.4 | 24.6 | DN200CF | 5/16-24 & TH | 7.03 |
| DN200CF | 203.2 | 28.5 | DN275CF | 5/16-24 & TH | 13.6 |
| DN16CF | 15.8 | 28.5 | DN275CF | 8-32 & TH | 18.59 |
| DN25CF | 25.4 | 28.5 | DN275CF | 1/4-28 & TH | 18.59 |
| DN35CF-DN40CF | 38.1 | 28.5 | DN275CF | 1/4-28 & TH | 18.59 |
| DN50CF | 50.8 | 28.5 | DN275CF | 5/16-24 & TH | 18.14 |
| DN63CF | 63.5 | 28.5 | DN275CF | 5/16-24 & TH | 17.69 |
| DN75CF | 76.2 | 28.5 | DN275CF | 5/16-24 & TH | 17.69 |
| DN100CF | 101.6 | 28.5 | DN275CF | 5/16-24 & TH | 16.78 |
| DN160CF | 152.4 | 28.5 | DN275CF | 5/16-24 & TH | 15.42 |
| DN16CF | 15.8 | 11.9 | DN25CF | 8-32 & 1/4-28 | 0.22 |
| DN16CF | 15.8 | 12.7 | DN35CF | 8-32 & TH | 0.34 |
| DN25CF | 25.4 | 12.7 | DN35CF | 1/4-28 & 1/4-28 | 0.34 |
| DN16CF | 15.8 | 15.8 | DN50CF | 8-32 & TH | 0.68 |
| DN25CF | 25.4 | 15.8 | DN50CF | 1/4-28 & 5/16-24 | 0.68 |
| DN35CF-DN40CF | 38.1 | 15.8 | DN50CF | 1/4-28 & 5/16-24 | 0.45 |
| DN16CF | 15.8 | 17.3 | DN63CF | 8-32 & TH | 1.36 |
| DN25CF | 25.4 | 17.3 | DN63CF | 1/4-28 & TH | 1.36 |
| DN35CF-DN40CF | 38.1 | 17.3 | DN63CF | 1/4-28 & TH | 1.13 |
| DN50CF | 50.8 | 17.3 | DN63CF | 5/16-24 & 5/16-24 | 1.13 |
| DN16CF | 15.8 | 19.1 | DN75CF | 8-32 & TH | 1.58 |
| DN25CF | 25.4 | 19.1 | DN75CF | 1/4-28 & TH | 1.36 |
| DN35CF-DN40CF | 38.1 | 19.1 | DN75CF | 1/4-28 & TH | 1.36 |
| DN50CF | 50.8 | 19.1 | DN75CF | 5/16-24 & TH | 1.13 |
| DN16CF | 15.8 | 19.8 | DN100CF | 8-32 & TH | 2.72 |
| DN25CF | 25.4 | 19.8 | DN100CF | 1/4-28 & TH | 2.49 |
| DN35CF-DN40CF | 38.1 | 19.8 | DN100CF | 1/4-28 & TH | 2.49 |
| DN50CF | 50.8 | 19.8 | DN100CF | 5/16-24 & TH | 2.26 |
| DN63CF | 63.5 | 19.8 | DN100CF | 5/16-24 & TH | 2.04 |
| DN75CF | 76.2 | 19.8 | DN100CF | 5/16-24 & TH | 1.81 |
| DN16CF | 15.8 | 21.3 | DN125CF | 8-32 & TH | 3.62 |
| DN25CF | 25.4 | 21.3 | DN125CF | 1/4-28 & TH | 3.62 |
| DN35CF-DN40CF | 38.1 | 21.3 | DN125CF | 1/4-28 & TH | 3.4 |
| DN50CF | 50.8 | 21.3 | DN125CF | 5/16-24 & TH | 3.17 |
| DN63CF | 63.5 | 21.3 | DN125CF | 5/16-24 & TH | 2.94 |
| DN75CF | 76.2 | 21.3 | DN125CF | 5/16-24 & TH | 2.72 |
| DN100CF | 101.6 | 21.3 | DN125CF | 5/16-24 & 5/16-24 | 2.26 |
| DN16CF | 15.8 | 22.4 | DN160CF | 8-32 & TH | 5.44 |
| DN25CF | 25.4 | 22.4 | DN160CF | 1/4-28 & TH | 5.44 |
| DN35CF-DN40CF | 38.1 | 22.4 | DN160CF | 1/4-28 & TH | 5.21 |
| DN50CF | 50.8 | 22.4 | DN160CF | 5/16-24 & TH | 4.98 |
| DN63CF | 63.5 | 22.4 | DN160CF | 5/16-24 & TH | 4.76 |
| DN75CF | 76.2 | 22.4 | DN160CF | 5/16-24 & TH | 4.53 |
| DN100CF | 101.6 | 22.4 | DN160CF | 5/16-24 & TH | 3.85 |
