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Evacuation of Air - minimum Capture Velocities to avoid Pollution products transferred to the Room

Capture velocities to avoid pollution products from galvanic baths, spray painting boxes and more contaminating the surrounding room and environment.

The tables below indicates necessary capture velocities of evacuating air in distance x from outlet openings to avoid pollution products transferred to surrounding rooms and environments.

The pollution source is in distance - x - from the outlet opening.

Evacuation of Air - Capture Velocity
- v1 -
Galvanic baths, stain baths, kitchen hoods, smith hoods etc. small 0.2 - 0.5 40 - 100
Spray painting, unloading and loading of bags, welding etc. moderate 0.5 - 1.0 100 - 200
Unloading moulds high 1.0 - 2.0 200 - 400
Grinding, honing, sand blaster etc. very high 3.0 - 10.0 600 - 2000
Evacuation of Air - Capture Velocity
Process BathsRequired Capture Velocity
- v1 -
Hardening 0.4 80
Stain, cold 0.3 60
Stain, hot 0.5 100
De-fating 0.3 60
Galvanic, chrome or cadmium 0.4 80
Water, not boiling 0.2 40
Water, boiling 0.4 80

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