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WVSV-S / WVSV-E Variable Air Volume with Sound Attenuator

    • Product Details


      The Waterloo variable air volume damper supplies a controlled volume of air, independent of the duct pressure. The unit consists of a Waterloo Flow Sensor, a damper section and a motor with integrated controller.

      The external motor controls the required air volume between factory commissioned maximum and minimum settings. Depending on the chosen controller a BMS control system can be connected to the unit. If required the unit can be set as a constant volume damper.

      Product Description

      • WVSV-SVariable Air Volume Damper with Sound Attenuation for Supply
      • WVSV-EVariable Air Volume Damper with Sound Attenuation for Extract


      • Adjustable for air velocity of 2.0 - 10 m/s
      • Accuracy ± 10%
      • Applicable in all positions
      • Manufactured in standard circular duct sizes
      • Factory set
      • Settings adjustable on site
      • Controls from a number of different manufactures may be fitted.
      • Minimum straight duct for Supply is 2Ø D
      • Minimum straight duct for Extract is 2x larger dimension (W/H)


      Casing and Damper: Zintec Plate

      Damper Blade has a rubber seal

      Sound Attenuator is internally lined.

      Accessories (Transformer)

      • WT24.240240v to 24v AC Power supply


      • Spigots: Ø 100, Ø 125, Ø 160, Ø 200, Ø 250, Ø 315, Ø 355, Ø 400

      For unit sizes please refer to table below

      Nom. ØD 100 125 160 200 250 315 355 400
      Nom. W 300 300 300 400 400 400 600 600
      Nom. H 200 200 200 250 300 350 400 400
      L 400 400 400 450 550 700 830 830

      Product Specification

      Related links

      VAV Commissioning Factors

      VAV Compact controller datasheet

      VAV Selection - Guidance

      WVSV - WLM - WR Series Operation and Maintenance Instructions

      Waterloo Mill Finish


      For more information please use our contact form;

      Call our Sales and Customer Service Hot Line:

      01622 711511



    • Product Images

      WVSV Variable Air Volume with Sound Attenuator


      WVSV Variable Air Volume with Sound Attenuator

    • Product Model Data