Non-return Dampers

UL

FOR INSTALLATION INTO WALLS OR RECTANGULAR DUCTS

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation

  • Maximum differential pressure: 100 Pa
  • Angle section border to be installed in wall openings
  • Available in standard sizes and many intermediate sizes
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Optional equipment and accessories

  • Installation subframe
  • Powder coating (RAL or DB)

KUL

FOR INSTALLATION INTO DUCTWORK

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation

  • Maximum differential pressure: 100 Pa
  • Casing with U-channel connection suitable for rectangular ducts
  • Available in standard sizes and many intermediate sizes
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Optional equipment and accessories

  • Installation subframe
  • Powder coating (RAL or DB)

ARK

FOR HEAVY-DUTY APPLICATIONS

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation

  • Air leakage with back pressure to EN 1751, class 4
  • Maximum differential pressure: 5000 Pa
  • Blades made of aluminium, casing made of galvanised steel
  • Available in standard sizes and many intermediate sizes
  • Variant ARK (with linked blades) for variable volume flows
  • Variant ARK-1 (with adjustable blade restrictors) for constant volume flows
  • Installation in horizontal or vertical ducts

 

Optional equipment and accessories

  • Installation subframe
  • Powder coating (RAL or DB)
  • Stainless steel construction with stainless steel casing; blades made of aluminium
  • Temperature resistant up to 200 °C with Viton seal