Type UL

For the fresh air and exhaust air openings of air conditioning systems

 

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

  • Maximum pressure of 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, NCS or DB)
small_tab1_Serie KUL
  • Application
  • Description

Application

  • Non-return dampers of Type UL for the fresh air and exhaust air openings of air conditioning systems
  • Prevention of unwanted airflows against the intended airflow direction when the system is not in operation
  • Blades close automatically when the system is shut down
  • Maximum total differential pressure: 100 Pa
  • Non-return dampers in exhaust air openings give also protection against the direct ingress of rain

Special characteristics

  • Any intermediate sizes within the standard size range are available
  • Temperature resistant up to 80 °C
  • Maximum pressure of 100 Pa
  • Non-return dampers are opened and closed by the airflow; no actuator is required
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Variants

  • UL-1: Non-return damper for exhaust air openings
  • UL-2: Non-return damper for fresh air openings

Parts and characteristics

  • Border
  • Blades with low-friction bearings
  • Blade restrictors
  • Blade tip seals
  • Bottom travel stop (angle section)
  • Visible mullion from B = 1000 mm

Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of mechanically self-powered dampers

Construction features

  • Border, material thickness 1.75 mm
  • Blades, material thickness 1.0 mm
  • Additional side bar with fixing holes to accommodate the blade shafts and integral blade restrictors (pins)
  • Blade restrictors prevent the blades from opening beyond a certain angle
  • Border fixing holes

Materials and surfaces

  • Border and travel stop (angle section) made of galvanised sheet steel
  • Blades made of formed aluminium
  • Mullion (from B = 1000 mm) made of galvanised sheet steel
  • Blade shafts made of brass
  • Side bar made of PVC plastic
  • Blade tip seals made of foamed polyester
  • Blade restrictors made of plastic
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Technical information

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code
  • Related products

Functional description

Non-return dampers open and close automatically.

When the system is in operation, the blades open when air flows.

When the system is shut down, the blades close due to their weight and safely prevent air from flowing against the intended airflow direction.

Non-return dampers in exhaust air openings give also protection against the direct ingress of rain.

UL
UL

 

Rectangular non-return dampers to prevent air from flowing against the intended airflow direction through fresh air and exhaust air openings of air conditioning systems.

Ready-to-install component which consists of a border, blades with low-friction bearings, and travel stop and sealing parts.

Special characteristics

  • Any intermediate sizes within the standard size range are available
  • Temperature resistant up to 80 °C
  • Maximum pressure of 100 Pa
  • Non-return dampers are opened and closed by the airflow; no actuator is required
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Materials and surfaces

  • Border and travel stop (angle section) made of galvanised sheet steel
  • Blades made of formed aluminium
  • Mullion (from B = 1000 mm) made of galvanised sheet steel
  • Blade shafts made of brass
  • Side bar made of PVC plastic
  • Blade tip seals made of foamed polyester
  • Blade restrictors made of plastic
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Technical data

  • Nominal sizes: 200 × 215 to 1600 × 1615 mm
  • Volume flow rate range: 110 – 6460 l/s or 396 – 23256 m³/h at 2.5 m/s
  • Total differential pressure – exhaust air: 25 Pa at 2.5 m/s
  • Total differential pressure – fresh air: 25 Pa at 2.5 m/s
UL

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265