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Centrifugal roof fan with vertical air exhaust and with maximum air flow of up to 2 425 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
  • Exhaust ventilation system for various premises suitable for roof mounting.
  • Compatible with Ø 200-630 mm air ducts.
  • Suitable for any roof types as well as vertical ventilation shafts.
  • The fan casing is made of steel with polymeric coating (VENTS VKV models), aluminum (VENTS VKVA), galvanized steel (VENTS VKVz).
  • 2-, 4- or 6-pole single- or three-phase asynchronous motors with an external rotor and impeller with backward curved blades.
  • The motor is equipped with thermal overheating protection with automatic restart as well as ball bearings for long service life.
  • For precise features, safe operation and low noise, each turbine is dynamically balanced while assembly.
  • Motors protection rating IP44, IP54.
  • Both smooth or step speed control is performed by means of the thyristor or autotransformer controller.
  • Several fans can be connected to one controller in case the total power and operating current do not exceed the rated controller values.
  • The fan is mounted on the roof directly above the ventilating duct or shaft and is firmly fixed to the flat surface by means of a connecting plate.
  • Electrical connection and installation shall beperformed in compliance with the manual and circuit diagram on the terminal box.
  • For connection of the fans to round air ducts use the following accessories: KKV damper, GVK flexible connector, FKV counter flange.
  • For mounting of the fans to flat surface use the mounting frame RKV.

Parameter VKV 4E 310
50 Hz
VKV 4E 310
60 Hz
Measurement unit
Frequency 50 60 Hz
Design centrifugal centrifugal -
Phase 1 1 ˜
Power 141 195 W
Voltage 230 230 V
A 0.64 0.87 A
Air capacity 2265 2425 m³/h
RPM 1420 1740 min-1
EC motor no no -
Noise level at 3 m 47 49 dBА
Motor protection rating IP54 IP54 -
Transported air temperature -25 ... +50 -25 ... +50 °С
IP Code IP X4 IP X4 -
Number of poles 4 4 -
Mass 20 20 kg
Outdoor mounting yes yes -
Sound-insulated casing no no -
Type exhaust exhaust -
Mounting for roof for roof -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Brochure "VENTS VKV, VKH" (pdf 2.04Mb)
Download high quality image "VENTS VKV (ErP 2018)" (psd 2.26Mb)
Declaration of сonformity "VKV, VKH" (pdf 1.68Mb)
Brochure "Roof fans accessories" (pdf 132.53Kb)
Download image "VENTS VKV (ErP 2018)" for your website (png 417.29Kb)
User's manual "VENTS VKV, VKH" (pdf 3.72Mb)
Parameter Value Measurement unit
∅D 285 mm
A 613 mm
B 477 mm
C 300 mm
Additional characteristics
Additional characteristics
Sound power level A-weighted Gen. Octave-frequency band [Hz] LpA, 3 m dBA LpA, 1 m dBA
dBA 63 125 250 500 1000 2000 4000 8000
LwA to inlet dBA 67 47 56 54 61 62 61 57 47 47 57
LwA to environment dBA 68 30 49 58 61 65 60 52 38 47 57
Designation key
Designation key
Series and modification Casing material Motor modification Turbine standard size
Number of poles Phase
VENTS VKV: vertical air exhaust _: steel with polymeric coating
А: aluminum
z: galvanized steel
Е: single-phase
D: three-phase
190; 220; 225; 250; 280; 310; 355; 400; 450; 500; 560; 630; 710
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