Blow-through rotary valve DBS

Blow-through rotary valves are used in pneumatic conveying systems to feed bulk materials into pipelines. In this process, the material to be conveyed is introduced into the conveying pipeline via the blow-through rotary valve and entrained by an air stream.

Application area

  • Nominal conveying capacity 0.45 – 320 m³/h at 100% filling level
  • Speed 30 rpm.
  • Differential pressure up to 0.05 MPa
  • Temperature range from -20°C to +80°C
  • Rotor diameter from 100 mm to 630 mm

Material variants

  • 0.6020 (GG)
  • 1.0570 (Steel)
  • 1.4301 (V2A)
  • 1.4571 (V4A)


  • Drive via directly flange-mounted geared engine as DBS COMPACT
  • With free shaft as DBS STANDARD
  • With gland seal packing and external ball bearing as DBS HEAVYDUTY
  • With open cell impeller
  • Sealing with radial shaft seal or stuffing box
  • Housing as welded construction
  • With round or square inlet and outlet
  • Surface primed, painted, blasted, stained or chemically nickel-plated
  • Constructively safe


  • With wearing strips made of spring steel
  • With wear protection inlet
  • With speed controller
  • With chain drive