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Pneumatic valves

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 35-45 0.1 450 < 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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