BSB Dampers
Air, Fire and Smoke Control
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BSB Engineering Services Ltd.
Unit 56, Trinity Trade Centre,
Mill Way, Sittingbourne,
Kent ME10 2PD, United Kingdom
Tel: +44(0)1795 422609
Fax: +44 (0)1795 429543
Email:
For purchase orders and order related enquiries:
orders@bsb-dampers.co.uk

For pricing, technical and general customer service enquiries:
enquiries@bsb-dampers.co.uk

The BSB HD Series Heavy Duty Duct Damper

Material Specifications


Casing
1.2mm (18swg) galvanised mild steel to BS EN 10142 1991. Coating Class Fe P02b Z275 Na.

Blades
Extruded airfoil aluminium to BS 1747 1987, wall thickness 1.25mm (18swg) minimum.
Precision rolled galvanised mild steel.
430 grade stainless steel.
316 grade stainless steel.

Blade End Caps
Injection moulded black polypropylene to BSB’s recorded design.

Blade Spindles
19mm (3/4”) diameter galvanised mild steel tube with corrosion resistant “Flo-Coat”.

Drive Spindles
19mm (3/4”) diameter galvanised mild steel tube with corrosion resistant “Flo-Coat”.

Quadrant
1.2mm (18swg) galvanised mild steel chassis with integral rotation slot and blade position indication. 30mm x 2.75mm (1 3/16” x 1/8”) zinc plated mild steel handle with integral clamp and locking nut to BS EN 10142 1991. Coating Class Fe P02b Z275 Na.

Linkage
Crank Arm: 30mm x 2.75mm zinc plated mild steel spindle clamp with integral 8mm diameter drive pins 3mm thick.
Drive Bar: 20mm x 3mm flat bar punched to fit onto zinc plated drive pins.

Bushes
Punch-formed bushes are formed within the casing to provide a low friction bearing for the blade spindles to rotate.

Rivets
High quality self-sealed rivets are used to European standards as relevant.

Sealant
All joints and seams are sealed with 3M sealant conforming to dictates of DW144.

Paint
Aluminium primer is applied to all welds and ground surfaces.

Operating Temperature
-10°C to +110°C as standard.
To order:
-10°C to + 350°C (galvanised blades)
-10°C to + 200°C (aluminium blade & silicon seal).

Low Leakage Models

Blade Edge Seals
Extruded hollow section silicone seal with temperature before distortion -10°C to + 200°C.

Side Seal Gasket
Grade 302 stainless steel hard rolled to BS 5770 Part4 1981, 0.345mm (0.010”) thick.


BSB 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 website is for reference only. Full product details should be obtained from our Sales Office.

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