Type ARK2

For the prevention of excess pressure in rooms and air conditioning systems

 

Pressure relief dampers for pressurisation systems, gas fire extinguishing systems, internal spaces with explosive atmospheres or transformer substations

  • Air leakage with back pressure to EN 1751, class 4
  • Maximum pressure loading of 5000 Pa
  • Differential pressure can be adjusted from 50 – 1000 Pa
  • Blades made of salt-water resistant AlMg3, casing made of galvanised steel
  • Blades open when the maximum differential pressure is exceeded and close automatically when the pressure drops
  • Blade locking with permanent magnet
  • Robust, maintenance-free construction
  • Available in standard sizes and many intermediate sizes
  • Temperature resistant up to 80 °C


Optional equipment and accessories

  • Installation subframe
  • Powder coating (RAL, NCS or DB)
  • Stainless steel construction with stainless steel casing; blades made of AlMg3
  • Temperature resistant up to 200 °C with Viton seal
small_tab1_Serie ARK2
  • Application
  • Description

Application

  • Pressure relief dampers of Type ARK2 for the protection of ventilation and air conditioning equipment, ductwork and internal spaces from differential pressures in excess of set maximum levels
  • When the set maximum differential pressure is exceeded, the blades automatically open to relieve the excess pressure
  • Pressure peaks such as those resulting from rapidly closing fire dampers or shut-off dampers will be reliably controlled
  • Differential pressure can be adjusted from 50 – 1000 Pa (B > 600 mm: 600 Pa max.)

Special characteristics

  • Blades made of salt-water resistant AlMg3
  • Robust, maintenance-free construction
  • Maximum pressure loading of 5000 Pa
  • Air leakage with back pressure, in closing direction, to EN 1751, class 4
  • Damper for negative or positive pressure (air extract or discharge)
  • Temperature resistant up to 80 °C
  • Optional temperature resistant construction for up to 200 °C, with Viton seal
  • Maintenance-free DU bearings with Teflon coating, bearing shafts made of stainless steel
  • Each blade is locked with a factory set permanent magnet
  • Adjustable differential pressure for blade opening: 50 – 1000 Pa, depending on width

Construction

  • Galvanised sheet steel, duct connection without flange holes
  • A2: Stainless steel
  • G: Duct connection with flange holes

Parts and characteristics

  • Ready-to-install pressure relief damper
  • Blades with low-friction bearings
  • One retaining element with a permanent magnet for each blade
  • Seal
  • Travel stop (angle section)

Construction features

  • Rectangular casing, material thickness 2 mm
  • Blades, material thickness 3 mm
  • Flanges on both sides, suitable for duct connection, with or without flange holes
  • Adjustable retaining element to adapt to different pressures
  • Blades can be moved independent of each other
  • Blades with perimeter seal, pressed against travel stop (angle section) when closed
  • Blade shafts with maintenance-free metal-polymer bearings

Materials and surfaces

  • Casing and travel stop (angle section) made of galvanised sheet steel, material no. EN 10327-DX51D+Z150-200-NAC
  • A2 construction: Casing and travel stop (angle section) made of stainless steel, material no. 1.4301
  • Blades made of aluminium, material no. AlMg3
  • Blade holders made of stainless steel, material no. 1.4301
  • Blade shafts made of stainless steel, material no. 1.4104
  • Plate of the retaining element made of steel, material no. 1.0718
  • Blade bearings made of metal-polymer composite, with an antifriction lining of PTEE/Pb
  • Neoprene seals
  • 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
ark2

Functional description

Pressure-relief dampers open and close automatically.

The blades are kept closed by magnets.

If the differential pressure exceeds the set maximum value, the magnetic force is overcome, and the blades open. The airflow by which the excess pressure has been caused can now flow through the damper. The pressure peak is immediately and reliably controlled. The blade opening angle depends on the differential pressure and the volume flow rate.

When the differential pressure drops below approx. 30 Pa, the blades close again.

ark2
ark2

 

Rectangular pressure relief dampers for the protection of air handling units, ductwork and internal spaces from differential pressures in excess of acceptable levels

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

Special characteristics

  • Blades made of salt-water resistant AlMg3
  • Robust, maintenance-free construction
  • Maximum pressure loading of 5000 Pa
  • Air leakage with back pressure, in closing direction, to EN 1751, class 4
  • Damper for negative or positive pressure (air extract or discharge)
  • Temperature resistant up to 80 °C
  • Optional temperature resistant construction for up to 200 °C, with Viton seal
  • Maintenance-free DU bearings with Teflon coating, bearing shafts made of stainless steel
  • Each blade is locked with a factory set permanent magnet
  • Adjustable differential pressure for blade opening: 50 – 1000 Pa, depending on width

Materials and surfaces

  • Casing and travel stop (angle section) made of galvanised sheet steel, material no. EN 10327-DX51D+Z150-200-NAC
  • A2 construction: Casing and travel stop (angle section) made of stainless steel, material no. 1.4301
  • Blades made of aluminium, material no. AlMg3
  • Blade holders made of stainless steel, material no. 1.4301
  • Blade shafts made of stainless steel, material no. 1.4104
  • Plate of the retaining element made of steel, material no. 1.0718
  • Blade bearings made of metal-polymer composite, with an antifriction lining of PTEE/Pb
  • Neoprene seals
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Construction

  • Galvanised sheet steel, duct connection without flange holes
  • A2: Stainless steel
  • G: Duct connection with flange holes

Technical data

  • Nominal sizes: 200 × 345 to 1200 × 1995 mm
  • Volume flow rate range: 140 – 4790 l/s or 504 – 17244 m³/h at 50 Pa, 2 m/s
  • Adjustable differential pressure range: 50 – 1000 Pa (B > 600 mm: 600 Pa max.)
  • Airflow velocity: 2 m/s at 50 Pa
ark2

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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