Vacuum Metal Bellows
These Vacuum Metal Bellows hose vacuum fittings follow ISO-KF standards , They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges . The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.
Features:
1.High gloss: the appearance of the pipe is beautiful, both inside and outside are mirror polished, the weld is smooth, and the quality is guaranteed
2.Welding process: advanced welding machine, automatic welding, no oxidation, ultra-high vacuum
3.High temperature resistance, negative pressure resistance, corrosion resistance, wear resistance
4.Helium leak detection: Each vacuum bellows has passed helium leak detection, and strictly controls the quality
Vacuum Bellow-Compressible
| DIA. | THICKNESS(MM) | COMPRESS RATE |
| KF16 | 0.15 | ±14% |
| KF25 | 0.15 | ±16% |
| KF40 | 0.15 | ±22% |
| KF50 | 0.15 | ±23% |
| ISO63 | 0.2 | ±26% |
| ISO80 | 0.2 | ±26% |
| ISO100 | 0.2 | ±27.5% |
Vacuum Bellow-Flexible
| DIA. | THICKNESS(MM) | MIN. BEND RADIUS(MM) |
| KF16 | 0.15 | 30 |
| KF25 | 0.2 | 70 |
| KF40 | 0.2 | 90 |
| KF50 | 0.25 | 140 |
| ISO63 | 0.25 | 150 |
| ISO80 | 0.25 | 220 |
| ISO100 | 0.25 | 280 |
