High-temperature rotary air locks are used for conveying and metering bulk materials and particles in process technology. These rotary valves are approved as standard for conveyed goods temperatures of up to 450°C. For higher temperatures of up to 750°C, the rotary valves can also be supplied with a suitable gear with chain drive.

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 +750°C
  • Rotor diameter from 100 mm to 630 mm

Material variants

  • 1.0570 (steel)
  • 1.4571 (V4A)
  • 1.4828
  • 1.5415 (16Mo3)


  • Drive via directly flange-mounted gear drive with motor lantern
  • Seal via gland seal packing and external ball-bearing
  • Adjustable packing gland approved up to 1100 ° C
  • Housing as welded construction in steel or stainless steel
  • With round or square inlet and outlet
  • Surface primed, painted (up to 400 ° C) or blasted


  • With wearing tips made of spring steel
  • With speed controller
  • With chain drive