Sound Attenuators

CIRCULAR SILENCERS / ATTENUATORS

Circular silencers for the reduction of noise in circular ducts of ventilation and air conditioning systems, with rigid construction made from galvanised sheet steel. Available in sizes from 80mm diameter up to 400mm diameter and from 500mm up to 1000mm nominal length, with 50mm insulation.

CAH

Circular silencer made of galvanised sheet steel or stainless steel

Attenuation effect due to absorption

The sound absorbing material is non-combustible mineral wool and non-hazardous to health according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC

Acoustic data measured to ISO 7235

Leakage class C or D (depending on size) to EN 15727.

For use in areas with potentially explosive atmospheres (according to EC Directive 2014/34/EU (ATEX)), zones 1, 2, and zones 21 and 22 (outside) according to EC Directive 1999/92/EC

Optional equipment and accessories

Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180

Socket-type spigot suitable for circular ducts to EN 1506 or EN 13180

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Z-LVS

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RN SERIES CAV CONTROLLERS

For the precise control of constant volume flow rates.

RN Series CAV units

VFL Constant Volume Flow Limiter

Circular, mechanical self-powered controllers for insertion into ducting, for the quick and easy balancing of constant volume flow rates in ventilation and air conditioning systems.

VFL Constant Volume Flow Limiter

Control component for type TVE

TVE SERIES VAV CONTROLLERS

For Variable Air Volume (VAV) systems, for the control of supply air or extract air, suitable even when upstream conditions may be unfavourable.

TVE Series VAV Units

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