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
Sales Office: +44(0)1795 422609
General Enquiries:
+44(0)1795 505366
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For pricing enquiries please email:

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For all other enquiries please email:

SF Series - Slimfit Duct Regulating Dampers

SF Series Slimfit Regulating Damper

Material Specification

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

Extruded airfoil aluminium to BS 1747 1987, wall thickness 1.0mm (20swg) minimum.

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

Blade Spindles
12.5mm (1/2”) diameter die-cast Mazak alloy to BS 1004 Alloy A DIN 1743, 2400 or engineering quality thermoplastic nylon dependant on availability, with a 6mm diameter steel linkage pin pressed in for the linkage bar to connect to.

Drive Spindles
12.5mm (1/2”) diameter die-cast Zinc alloy to BS 1004 Alloy A DIN 1743, 2400 or IXEF semi-crystalline polymer polyarylamide dependant on availability.

Blade Spindle Bushes
Injection moulded (Hoescht) Nylon 66 “Top Hat” design (melting point 220°C).

1.2mm (18swg) galvanised mild steel chassis with integral rotation slot and blade position indication. 20mm x 2.5mm (3/4” x 1/8”) zinc plated mild steel handle with integral clamp and locking nut to to BS EN 10142 1991. Coating Class Fe P02b Z275Na.

Drive Bar
22mm x 1.6mm galvanised mild steel flat bar punched to fit onto zinc plated drive pins.

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

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

Aluminium primer is applied to all welds and ground surfaces.

Operating Temperature
-10°C to +100°C

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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