How the VA-PV works.
From 4 – 8 m this outlet lets the air fall vertically with low turbulence. An adjustable supporting jet at its centre pushes warm air down to the work floor in winter.
Applications: production halls, above walkways between workstations with local extraction; welding shops, press shops, paint hangars (p. 4, p. 8). Krantz references in the Netherlands: Rijksmuseum, Amsterdam; Philips Medical Systems, Best (VA-PV product page, old Peek site)
Krantz, Radial displacement outlet VA-PV, DS 4061 E 03.2013.
Smoke test
Airflow in the Krantz lab.
A real smoke test in the Krantz flow laboratory: this is how air leaves the VA-PV.
Technical data VA-PV
- Discharge height
- 4 to 8 mp. 2
- Max. ΔT cooling
- max. −6 Kp. 2
- Volume flow
- 1 000 – 8 000 m³/hp. 2
Krantz, Radial displacement outlet VA-PV, DS 4061 E 03.2013.
Page numbers are PDF pages of the data sheet.
Download documents
Air
| Property | Value · Source |
|---|---|
| Volume flow | 1 000 – 8 000 m³/h p. 2 |
| Max. ΔT cooling | max. −6 K p. 2 |
| Max. ΔT heating | max. +10 K (p. 8) p. 2 |
| Discharge height | 4 to 8 m (per size: DN 315 4 – 7 m … DN 710 6 – 8 m) p. 2 |
| Penetration depth / throw | koelen vrijwel onbeperkt; verwarmen bv. DN 630, 6,480 m³/h, +8 K: 6.75 m; straaldiameter ca. 1.0 – 5.0 m p. 4 |
| Example sound and pressure drop | diagrams per size; up to approx. 68 dB(A) and 250 Pa at max. volume flow p. 6 |
| Air velocity | bv. DN 400, ΔT −5 K: 0.39 – 0.42 m/s op 5 m onder het rooster (VDI 3802 activiteitsniveau II/III) p. 4 |
Design
| Property | Value · Source |
|---|---|
| Sizes | DN 315 / 400 / 500 / 630 / 710; min. onderlinge afstand 3.0 – 5.0 m; gewicht 4 – 21 kg (met aansluitbox 14 – 56 kg) p. 5 |
| Materials and finish | cylindrical and circular parts aluminium (visible parts RAL); perforated plate, baffle and plenum box galvanised sheet steel p. 2 |
| Connections | directly on circular duct EN 1506, via plenum box, or with spigot on the underside of a rectangular duct p. 2 |
| Options and versions | oval control damper for support jet; manual, Siemens/Belimo actuator or thermostatic controller T1 (20 – 28 °C, without auxiliary power) p. 8 |
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