Compressed air silencer/ Aerating unit/ Filter: Porous HDPE (30 My nom.) share and Solid.
PE screw adapter (male) with wire ;1/8", 1/4", 3/8", 3/4", 1"Bsp.
Standard color grey with sealed adapter color black.
Silencing around 20 dBa in frequency between 1 - 8 Khz.