The ZRS HEAVYDUTY rotary valve with reinforced, external bearing is used for metering, conveying and discharging bulk materials and as a protective system or device in potentially explosive atmospheres. 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 0.05 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)


  • With free shaft end to the drive via elastic coupling or traction drive
  • With motor lantern, torque support or base plate
  • Seal via gland seal packing
  • With flushing or purging gas connection
  • Housing as cast or welded construction
  • With round or angular inlet and outlet
  • Surface primed, painted, blasted, pickled or plated chemically
  • Structurally safe
  • Pressure-shockproof up to 25 bar according to RL2014/34/EU
  • Pressure-shockproof and ignition puncture-proof up to 10 bar according to RL2014/34/EU


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