The Howden family of attenuators, or reactive silencers, has been developed specifically for applications where dust or moisture affect the attenuation properties of conventional absorptive silencers.
Conventional absorptive silencers have been used successfully over the years to handle clean air. However they do not perform as well in gas streams containing particulate matter and moisture as the absorptive material deteriorates and plate perforations become blocked.
Howden has developed a range of reactive silencers that are ideally suited for use with contaminated air and gases, or where there is moisture carry over.