1/4 Inch Hand Turn Pneumatic Flow Control Exhaust Silencer - TEMCo Industrial
ZLYY 5Pcs 1/4 Male Thread Pneumatic Silencer Muffler Fitting, Top Adjustable Air Flow Speed Controller, Sintered Bronze Exhaust Muffler: Amazon.com: Industrial & Scientific
Milton Pneumatic Exhaust Muffler, 1-1/2” MNPT 40 Micron Sintered Bronze Silencer/Diffuse air and Noise Reducer - Box of 25 in the Air Compressor Accessories department at Lowes.com
Milton Pneumatic Exhaust Muffler, 1-1/2 in. MNPT 40 Micron - Box of 25 1086-24ABK - The Home Depot