TS series mufflers are made of a high-density, porous polyethylene body on a solid polyethylene base. The base is molded with 1/8-inch, 1/4-inch, 3/8-inch, 1/2-inch, 3/4-inch, and 1-inch MNPT threads. The maximum pressure is 150 psi and the temperature range is 41 ºF to 140 ºF. The TS muffler is available in four different air flows: 250 microns (green base), 70 microns (black base), 35 microns (red base) and 20 microns (blue base).