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Pneumatic spools frequently operate without lubrication.
BALINIT® MILUBIA coated high precision seal valves work reliably at poor lubrication conditions due to very low dry running friction.
BALIQ® CARBOS STAR is used for highly loaded precision valves, e.g for HPLC High Performance Liquid Chromatography valves, where hardness, toughness low friction and smooth surfaces are required.
| Solution | Coating material | Coating technology | Coating hardness HIT [GPa] | Coefficient of friction (dry) vs. steel | Max. service temp. [°C] | Process temperature [°C] | |
|---|---|---|---|---|---|---|---|
| ta-C | Filtered Arc | 35 - 50 | 0.1 - 0.2 | 450 | < 100 | ||
| a-C:H | PACVD | ~15-25 | 0.1 - 0.2 | 300 | < 250 | ||
| CrN / a-C | S3p | 30 - 40 | 0.1 - 0.2 | 350 | < 200 |
|
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