Topring 86.305 1/4 NPT Sintered Bronze Male Pipe Speed Control Muffler / Filter

Speed control mufflers provide safe airflow regulation at an acceptable sound level on exhaust ports of air control valves. Tough, cellular, sintered Bronze structure, secured to bronze body, ensures desired combination of filtering and muffling with adjustable flow. Using the external adjustment screw, the opening of the orifice can be adjusted from closed to high flow, as required.