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Non-return damper, variant ARK

Non-return damper with linkage

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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

 

 

 


General information

Application
  • Non-return dampers for the fresh air and exhaust air ducts of ventilation and 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 differential pressure: 5000 Pa


Special features
  • Robust, maintenance-free construction
  • Maximum differential pressure: 5000 Pa
  • Closed blade air leakage with back pressure, in closing direction, to EN 1751, class 4
  • Damper for negative or positive pressure (air extract or discharge)
  • Operating temperature 0 to 80 °C
  • Optional temperature resistant construction for up to 200 °C, with Viton seal
  • Installation in horizontal or vertical ducts
  • Maintenance-free DU bearings with Teflon coating, bearing shafts made of stainless steel


Nominal sizes
  • B: 200, 400, 600, 800, 1000, 1200 mm (intermediate sizes: 201 – 1199 mm, in increments of 1 mm)
  • H: 345, 675, 1005, 1335, 1665, 1995 mm (intermediate sizes 355 – 505, 685 – 835, 1015 – 1165, 1345 – 1495, 1675 – 1825 mm in increments of 1 mm)
  • Any combination of B × H


Variants
  • ARK: Non-return damper with linked blades, preferably for variable volume flows
  • ARK-1: Non-return damper with adjustable blade restrictors, preferably for constant volume flows


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


Accessories
  • Installation subframe for the fast and simple installation of mechanical self-powered dampers


Standards and guidelines
  • Closed blade air leakage (against the intended airflow direction) to EN 1751, class 4
  • Casing air leakage to EN 1751, class C


Maintenance
  • Maintenance-free as construction and materials are not subject to wear
  • Contamination should be removed as it may lead to corrosion and to increased closed blade air leakage

Description

Variants
  • ARK: Non-return damper with linked blades, preferably for variable volume flows
  • ARK-1: Non-return damper with adjustable blade restrictors, preferably for constant volume flows


Accessories
  • Installation subframe for the fast and simple installation of mechanical self-powered dampers


Standards and guidelines
  • Closed blade air leakage (against the intended airflow direction) to EN 1751, class 4
  • Casing air leakage to EN 1751, class C


Nominal sizes
  • B: 200, 400, 600, 800, 1000, 1200 mm (intermediate sizes: 201 – 1199 mm, in increments of 1 mm)
  • H: 345, 675, 1005, 1335, 1665, 1995 mm (intermediate sizes 355 – 505, 685 – 835, 1015 – 1165, 1345 – 1495, 1675 – 1825 mm in increments of 1 mm)
  • Any combination of B × H

Informaţii tehnice

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

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
  • RELATED PRODUCTS

Non-return dampers open and close automatically. When the system is in operation, the blades open when air flows. The blade opening angle depends on the differential pressure and the volume flow rate; for variant ARK-1 the opening angle is limited by adjustable blade restrictors. When the system is shut down, the blades close due to their weight. They safely prevent air from flowing against the intended airflow direction.

 


Variants, Product details, Installation

  • VARIANTS
  • DIMENSIONS
  • PRODUCT DETAILS
  • INSTALLATION

ARK

Variant 
  • Non-return damper with linked blades, preferably for variable volume flows 

Nominal sizes 
  • B: 200, 400, 600, 800, 1000, 1200 mm (intermediate sizes: 201 – 1199 mm, in increments of 1 mm) 
  • H: 345, 675, 1005, 1335, 1665, 1995 mm (intermediate sizes 355 – 505, 685 – 835, 1015 – 1165, 1345 – 1495, 1675 – 1825 mm in increments of 1 mm) 
  • Any combination of B × H 

Parts and characteristics
  • Ready-to-install non-return damper 
  • Blades with low-friction bearings 
  • Seal 
  • Travel stop (angle section) 
  • Linkage 

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 
  • Linkage for synchronous blade movement 
  • Blades with perimeter seal, pressed against travel stop (angle section) when closed 
  • Blade shafts with maintenance-free plastic bearings 

Materials and surfaces 
  • Casing and travel stop (angle section) made of galvanised sheet steel, material no. EN 10346-DX51D+Z140-200 
  • A2 construction: Casing and travel stop (angle section) made of stainless steel, material no. 1.4301 
  • Blades and linkage 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 
  • Plastic bearing made of PPS 
  • Neoprene seals 
  • P1: Powder-coated, RAL CLASSIC colour 
  • PS: Powder-coated, DB colour


ARK-1 

Variant 
  • Non-return damper with adjustable blade restrictors, preferably for constant volume flows 

Nominal sizes
  • B: 200, 400, 600, 800, 1000, 1200 mm (intermediate sizes: 201 – 1199 mm, in increments of 1 mm) 
  • H: 345, 675, 1005, 1335, 1665, 1995 mm (intermediate sizes 355 – 505, 685 – 835, 1015 – 1165, 1345 – 1495, 1675 – 1825 mm in increments of 1 mm) 
  • Any combination of B × H 

Parts and characteristics
  • Ready-to-install non-return damper 
  • Blades with low-friction bearings 
  • Seal 
  • Travel stop (angle section)
  • Two adjustable restrictors per blade 

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 
  • Restrictors, adjustable from the outside, to limit the opening angle for each blade 
  • Blades can be moved independently of one another 
  • Blades with perimeter seal, pressed against travel stop (angle section) when closed 
  • Blade shafts with maintenance-free plastic bearings 

Materials and surfaces 
  • Casing and travel stop (angle section) made of galvanised sheet steel, material no. EN 10346-DX51D+Z140-200 
  • 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 and restrictors made of stainless steel, material no. 1.4301 
  • Blade shafts made of stainless steel, material no. 1.4104 
  • Plastic bearing made of PPS 
  • Neoprene seals 
  • P1: Powder-coated, RAL CLASSIC colour 
  • PS: Powder-coated, DB colour

Descărcări fişiere

informaţii produs

certificate

manuale de operare

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Vă mulţumim pentru mesaj!

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Departamentul nostru de Cereri Service o să vă contacteze în cel mai scurt timp Pentru întrebări generale privind produsele sau serviciile puteţi suna şi la:
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