Rotierender Schalldämpfer

摘要

A rotary valve noise attenuator (32) with a rotary ball control element (22) and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels (48) formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated (36) so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.