Medium pressure rotary valve MDS

Medium pressure rotary valves are used for dosing, conveying and discharging bulk materials or other granulates and powders. The medium pressure rotary valves are suitable for pressure differences up to 1.5 bar and are also used in pneumatic conveying systems. Design according to Machinery Directive 2006/42/EC or according to ATEX Directive 2014/34/EU.

Application area

  • Nominal conveying capacity 0.45 – 320 m³/h at 100% filling level
  • Speed 30 rpm.
  • Differential pressure up to 0.15 MPa
  • Temperature range from -20°C to +400°C
  • Rotor diameter from 100 mm to 630 mm

Material variants

  • 0.6020 (GG)
  • 1.0570 (Steel)
  • 1.4301 (V2A)
  • 1.4571 (V4A)
  • 1.8714 (HAROX®400)


  • Drive via directly flange-mounted gear drive or with free shaft end
  • With motor lantern, elastic coupling, torque support or base plate
  • With rotor extracting device as ZRS EASYCLEAN
  • Seal via radial shaft sealing rings or gland seal packing
  • Housing as cast or welded construction
  • With round or angular inlet and outlet
  • Surface primed, painted, blasted, pickled or plated chemically
  • Structurally safe
  • Pressure shock resistant up to 25 bar according to RL2014/34/EU
  • Pressure shock resistant and ignition proof up to 10 bar according to RL2014/34/EU


  • With wearing strips made of spring steel
  • With reinforced elastomer sealing lips
  • With wear protection in inlet
  • With heat shield
  • With dropout box
  • With speed controller