Ejectors compressor create broad spectrum noise with distinct peaks at frequencies related to the motive stream nozzle dimensions. The noise levels generated by the high pressure ratios across the motive stream nozzle, can reach very high levels inside the pipe which, if left untreated may cause acoustic fatigue damage to the downstream pipework as well as exceeding local noise levels requirements for personel protection.Designed for the short acoustic wave lengths produced by motive steam noise, each silencer is custom engineered using a computer program developed by Flo-Dyne. The program enables Flo-Dyne to match the silencer components, the packing, the passage with perforated acoustic facings to the acoustic and flow characteristics of the system.