Non Return Dampers Type ARK · ARK1 Pressure Relief Damper Type ARK2 TROX GmbH Heinrich-Trox-Platz D-47504 Neukirchen-Vluyn

Contents · Description Description Construction Standard sizes · Installation details Technical data Order details Non return dampers type ARK and ARK1 are designed for automatic shut off of individual sections of an air conditioning system. With fan running, the degree of blade opening is a function of the air velocity. If the fan is turned off, the blades close automatically. In a multi fan installation this prevents back draught through the non-operating fans. Pressure relief dampers type ARK2 are used in ventilation systems and rooms of buildings to prevent excess pressures occuring. If a...

Construction Type ARK · ARK1 ARK – Casing formed from galvanised sheet steel; casing in stainless steel on request – Aluminium blades – Coupling sections (with dampers having two or more blades) made of aluminium – Blade shafts stainless steel – Bearing from composite material with antifriction lining of PTFE/Pb (maintenance-free) – Seals made of neoprene, temperature resistant up to 80 °C – Limiting pressure 5000 Pa Construction variant ARK-G As for type ARK, but both flanges drilled ቢ ባ ቤ ብ Casing Blade Seal Stop angle ቦ Blade shaft ARK1 As for type ARK, but: – without blade coupling sections...

Surface finish ARK2 – Casing formed from galvanised sheet steel; casing in stainless steel on request – Aluminium blades – Blade shafts stainless steel – Bearing from composite material with antifriction lining of PTFE/Pb (maintenance-free) – Seals made of neoprene, temperature resistant up to 80 °C – Opening pressure difference 50-1000 Pa for dampers up to a width of 600 mm – Opening pressure difference max. 600 Pa for dampers with a width greater than 600-1200 mm – The required opening pressure difference must be specified when ordering Powder coating P1 Standard RAL shades: RAL RAL RAL RAL...

Standard Sizes · Installation Details Flange drilling details Any combinations of dimensions B x H listed above can be supplied. Intermediate dimensions on request. even number of holes * only with type ARK Standard sizes Number of Number of holes Number of blade coupling per Bper Hblades sections * dimension dimension Installation on surface of wall opening Hole pitch B- and H-dimensions = 125 mm Installation between ventilation ducts Installation opening without masonry subframe B / H Masonry subframe Special screw Construction with one masonry subframe For construction using masonry subframe,...

Technical Data Nomenclature Data given: Non return damper type ARK B = 600 mm, H = 1005 mm ͬ p D = 2000 Pa, v = 7 m/s Horizontal installation orientation Required: Total pressure drop ͬ pt · Leakage volume flow VL Result: (from diagram) ͬ pt = 100 Pa · VL = 1.3 l/s (4.7 m3/h) in m2: Inlet cross-section (see page 5) in m/s: Air velocity with damper opened based on inlet cross-section A in Pa: Total pressure drop (duct mounting) with damper open ͬ pD in Pa: Pressure difference with damper closed in l/s: Leakage volume flow rate in m3/h: (independent of width B) ͬ pÖ in Pa: Opening pressure difference...

Order Details Order code These codes need not be completed for standard products Colour shade (see pages 3 and 4) RAL ... Surface (see pages 3 and 4) P1 = Powder-coated to RAL ... Construction variant Standard sizes B x H1 in mm (see page 5) Masonry subframe (see page 5) 22 0 = without masonry subframe Specification text Order example Non return dampers for automatic shut off of individual sections of an air conditioning system, permitted maximum pressure loading 5000 Pa (acting in closing direction). Material and construction variants: details see page 3 Masonry subframe: details see page 5...