BD Series. Backdraught Volume Regulating Damper M A N U F A C T U R E R S O F A I R, F I R E A N D S M O K E C O N T R O L P R O D U C T S

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1 V11711 D Series ackdraught Volume Regulating Damper Extruded aluminium blades DW144 compliant Galvanised mild steel casing with stainless steel option Flange or spigot casing options Infinite sizing capability M N U F C T U R E R S O F I R, F I R E N D S M O K E C O N T R O L P R O D U C T S

2 D Series ackdraught Volume Regulating Dampers Introduction The D Series The D Series ackdraught Damper is self-opening subject to air velocity and is designed to restrict air back flow. The damper can be fitted to partitions or brick walls, on plenums or duct mounted. D Series Features and enefits Standard case construction is galvanised mild steel Extruded aluminium blades Flange or spigot casing options Infinite sizing capability Testing and Conformities Unless stated otherwise, flange models are suitable for classes & of DW144, with spigot models being suitable for classes, and C of DW144 Conforms to HVC specification DW144 classes and, and Eurovent as relevant Independent performance tests for pressure drop. Test report 165 refers. Material Specification Casing 1.2mm (18swg) galvanised mild steel to S EN DX51. Please note:- When Stainless steel case models are supplied, our quotation will be for the supply of natural finish product only. Cleaned and polished welds/casing are available at extra cost. lade ushes Injection moulded Nylon 66. lades Extruded aluminium to S EN 755-9:2008. Wall thickness 1.0mm. lternative blade materials are currently not available. lade Details The nominal 60mm wide standard extruded aluminium blades are fitted onto 6.25mm diameter spindles, complete with blade edge brush seal fitted as standard. ll blades are fitted for parallel operation only lades are linked with a precise linkage, minimum two blades and a maximum of 6 blades per linkage set, alleviating movement and subsequent rattling of individual blades. Please refer to pressure drop figures for suitability. void use of dampers in extremely turbulent duct conditions. lthough blade linkages will stabilise blades in most conditions, abnormal circumstances may cause dampers to malfunction. Horizontal pplications Where dampers are required to be installed in horizontal applications, a galvanised steel blade limiting stop will be fitted running full length to one side only to prevent locking in the open position. When making an enquiry or placing orders, it is important to inform horizontal or vertical damper position. lade Spindles IXEF semi-crystalline polymer polyarylamide. lade Limiting ngle (horizontal application) 10 x 15 x 18 gauge galvanised steel running full length to one side only. Jamb Seals (optional) Punched aluminium strip to S EN 755-9: mm (10swg) thick, that is also a combination blade limiting stop in the open and closed position. Paint luminium primer is applied to all welds and ground surfaces. Edge Seal Nylon brush seal. performance and pplication Temperature: 0ºC to +100ºC. Velocity: 1m/s to 12m/s, horizontal airflow. 2 Standard extruded aluminium blade The D Series Range The S D series is available in the following case sizes: Flangefit - 100mm - 600mm width x 100mm mm height Framefit - 100mm - 600mm width x 100mm mm height Spigotfit - 100mm - 600mm width x 100mm mm height Circular Spigotfit - 100mm - 600mm diameter

3 D Series ackdraught Volume Regulating Dampers Product Dimensions Flangefit 105 Damper Width Flange Detail = 25mm, 30mm or mm Please specify Flange sizes are available under 25mm but will be without mez punch shown. These will be pre-punched with a 10mm fixing hole Framefit = 25mm, 30mm or mm Please specify Spigotfit = 40mm (100 to 4mm) 55mm (5 to 600mm) Circular Spigotfit = 40mm (100 to 4mm) 55mm (5 to 600mm) irflow to be specified irflow irflow 105 Damper Height Damper Height Damper Width 105 Damper Width Damper Height 105 Damper Width Damper Height or Diameter Damper Detail Case Depth and Flange sizes standard Ordered ctual Height Duct Height H or D * * * * * No. of lades * ctual Height differs slightly from specified nominal height 3

4 D Series ackdraught Volume Regulating Dampers lades and lade Dimensions and Positions s standard, blades are linked as illustrated with galvanised mild steel connection bars, to control evenly the opening and closing of the blades lade Pins (Riveted) Swivel Points 8 rackets 48 Strip lades 58 LDES CLOSED LDES OPEN 2 Holes for affixing bracket to blade lade Swivel Points 2 Holes for affixing bracket to blade lade Swivel Points Pins (Riveted) Pins (Riveted) rackets rackets Strip Strip lades lades 4

5 D Series ackdraught Volume Regulating Dampers Product Characteristics Pressure Loss (Report Ref. 165) Vertical installation only Figures based on 600mm x 600mm sized unit. Tolerance + 10% Pressure Drop in Pa. Total Pressure Drop (Free Discharge) Starts to Open Fully Open Horizontal application: The D Series damper has not been tested in the horizontal position and therefore, we do not have any performance data available. Damper blade linkage can be omitted for horizontal applications where requested Velocity in m/s (ir Velocity) Damper tested vertically in Horizontal Ductwork Multiple ssemblies For assemblies greater than sizes detailed, multiple sections can be supplied for on-site assembly as illustrated. When there are transportation restrictions, large multiple units will be broken down and shipped as individual sections for on-site assembly. Unless requested, joining strips would not normally be supplied fully drilled. Typical Tender/Specification Text The S D series ackdraught Damper is designed to restrict air back flow. The blades shall be self opening and supplied with edge brush seals as standard. lades shall be extruded aluminium, parallel in operation and linked to minimise noise. lades are supported via injection moulded nylon 66 bearings to ensure smooth operation. lades are housed in a galvanised case and are offered in three options: Flangefit, Framefit and Spigotfit. Dampers are designed for vertical installation with a blade limiting angle where horizontal applications are required. Weight Chart Damper Height (mm) Damper Width (mm) Weights shown are approximate and are for guidance only. Weights based on Flangefit model. For specific weight details please contact our sales office. 5

6 D Series ackdraught Volume Regulating Dampers Ordering Codes D F - J D ackdraught Regulating Damper Model F Flangefit FF Framefit R Rectangular/Square Spigotfit C Circular Spigotfit lade Material luminium S 430 Grade Stainless Steel Options J Jamb Seals ir, Fire and Smoke Control Products in the S Range: FSD-TD Series Fire/Smoke Dampers FSD-C Series Circular Fire/Smoke Dampers SC Series Smoke Dampers FD Series Fire Dampers FD-C Series Circular Fire Dampers SS Series SlimSeal Dampers HD Series Heavy Duty Dampers D Series ackdraught Dampers VC Series Volume Control Dampers Control Systems For full details of the complete S Product Range, please refer to our individual product brochures, sales office or website. S Engineering Services Limited Unit 56, Trinity Trade Centre, Mill Way, Sittingbourne, Kent ME10 2PD, UK Tel: +44 (0) Fax: +44 (0) For purchase orders and order related enquiries, please orders@bsb-dampers.co.uk For pricing, technical and general enquiries, please enquiries@bsb-dampers.co.uk Website: member of the Maico group S Engineering Services Ltd. reserves the right to modify or withdraw any specification without prior notice that may result from continuous product development. The information contained within this brochure is correct at the time of going to press. (D ) MDE IN RITIN Member of DCS ssociation Member of HEVC ssociation ssessed to ISO 9001 Cert. No. 828 SOLD TO THE WORLD