Flow of media generated by Gas compressors and ejectors will produce a lot of noise when flowing through stream nozzle due to flow-velocity and turbulent motion. This turbulence could cause very high vibration in the pipeline and also lead to structural damage due to mechanical noise transmission through structures. PRAcoustics On-line silencer blocks the transmission of both the gas-borne noise propagating inside the pipe and the structure-borne noise propagating as vibration in the pipe wall. A very minimal pressure drop across the silencer is achieved (20-50 mm of water column as per the requirement of the customer) through profiled passage ways that reduce turbulence at section changes without reducing the pressure.