Browse our Site:
Contact Us
BSB Engineering Services Limited
Unit E
Tribune Drive
Trinity Trading Estate
Sittingbourne
Kent ME 10 2PD
T: +44(0)1795 422609
F: +44(0)1795 429543
Contact
our Sales Office for more information
DD Series Literature
Download Brochure
Operating and maintenance
Options
Flangefit
(100 to 1000mm sq.)
Spigotfit
(100 to 1000mm sq.)
Circular
Spigotfit
(100 to 800mm dia.)
Flat Oval
Spigotfit
(100 to 1000mm spigots.)
Control Options
Extended spindle
Hand Control
Electric Motor
For Pneumatic Options please refere to
HD Series
Multiple assemblies available
Product Range
BD Series
Control Panel Systems
FD Series
FSD-TD Series
HD Series
SB Series
SC Series
SF Series
Product Range
DD Series
Duct Regulating Dampers
The DD Series
Duct Balancing Damper was designed for duct installations to balance/regulate
airflow.
All spindles revolve in low maintenance nylon bushes which are fitted within
pressed inserts. Precise blade positioning is achieved via a robust dual-purpose
quadrant and spindle assembly, operating the linkage mechanism which is located
outside of the airstream.
The quadrant assembly is designed to facilitate simple conversion to motorisation without the need for additional components.
Features
• Standard case construction is galvanised
mild steel
• Two airfoil blade designs
• Four casing options
• Out of airflow linkage
• Easy conversion from manual to motorised
or vice versa
• Infinite sizing capability from 100
to 1000mm, 100 to 800mm dia.
• Variable flange dimensions
• Comprehensive control options
• Can be supplied with blades and case
in 316/430 stainless steel
• Stainless steel side seals to order
Specifications
& Tests
• Unless stated otherwise, flange models are suitable for classes A &
B of DW144 with spigot models suitable
for classes A B & C of DW144
• Conforms to HVCA specification DW144
• Conforms to Eurovent 2/2 classes
A - C
• Independent performance tests for
pressure drop, leakage and airtightness. Test reports 143, 145 and 146
refer
Blade Detail
Plain
Aluminium
Blade with
End Cap
(left) or
Galvanised Mild Steel or Stainless Steel Blade (right)
The 63mm wide
extruded aluminium airfoil section blades are fitted to 12.5mm diameter spindles,
with the option of galvanised mild steel or Grades 316 and 430 stainless steel
blades available to order.
All models are
available with either opposed or parallel blades (unless specified, opposed
blades will be supplied as standard).
Fitted to
the ends of the aluminium blades are End Caps to alleviate noise generation.