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RKKTMRound tight regulation/adjustment damper

RKKTM – The Round tight regulation damper regulates airflow or tightly shuts circular ducts by constricting the cross section.The blades are fitted with EPDM seals.



  • For regulation and airflow cut off inside the duct
  • Manual or electrical actuating
  • Diameter from 80 to 630 mm
  • External Casing leakage class C
    Internal leakage class 4 acc. to EN 1751
  • Made of galvanized steel
  • Includes a flange for connection to the duct SPIRO design also available
  • Can be used in explosion-hazard environments