How the VA-T works.
A trapezoidal perforated box below the duct that blows the air broadly, angled to straight down, pushing dust and fibres towards the extraction at floor level.
Applications: textile mills, car plants (paint lines, assembly), printing works (p. 7).
Krantz, Trapezoidal displacement outlet VA-T, DS 4010 E 01.2018.
Smoke test
Airflow in the Krantz lab.
A real smoke test in the Krantz flow laboratory: this is how air leaves the VA-T.
Technical data VA-T
- Discharge height
- 3 to 4 mp. 7
- Max. ΔT cooling
- −3 to −6 Kp. 7
- Volume flow
- 300 – 2,500 m³/(h·m)p. 3
Krantz, Trapezoidal displacement outlet VA-T, DS 4010 E 01.2018.
Page numbers are PDF pages of the data sheet.
Download documents
Air
| Property | Value · Source |
|---|---|
| Volume flow | 300 – 2,500 m³/(h·m); per unit 250 – 4,400 m³/h, from 140/800 to 500/1800 p. 3 |
| Max. ΔT cooling | −3 to −6 K (width 140); −3 to −8 K (290 and 500) p. 7 |
| Max. ΔT heating | intended for permanent cooling p. 8 |
| Discharge height | 3 to 4 m p. 7 |
| Penetration depth / throw | reach approx. 8 m (290/500 with swirl elements); 2 – 3 m (140); table: 4 – 8 m p. 5 |
| Example sound and pressure drop | diagrams per width (damper open), p. 7 p. 7 |
Design
| Property | Value · Source |
|---|---|
| Sizes | breedte 140 / 290 / 500 mm; lengte 800 / 1 250 / 1 600 / 1 800 mm; gewicht ca. 6 – 47 kg; kanaalafstand 3.5 – 6 m (140) of 7 – 10 m (290/500) p. 3 |
| Materials and finish | housing and perforated plate galvanised sheet steel, optional RAL; swirl elements polystyrene p. 9 |
| Connections | rectangular spigot on top with flange (A3) for 20 mm angle flange; 140 can also be fixed to the duct base (drilling pattern Ø 6 mm) p. 2 |
| Options and versions | volume flow damper in spigot, adjustable from outside; cover plate for wall mounting (140 only, halves the volume flow); perforated plate opens for inspection p. 8 |
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