BARBED DIFFUSER FITTING These diffusers are installed within minutes and produce thousands of tiny bubbles providing good oxygen & ozone mass transfer. Requires low driving pressures (0.25-PSI). Made in the USA Multiple Sizes Completely Ozone Resistant Choose from 1/8", 3/16", 1/4" Kynar Barb, or 1/8" & 1/4" NPT SS Connections Accomodates flowrates from 0.05 - 1.0 CFM (highest flowrates available) Easily cleaned with HCI Pore size - nominal 25 microns (Min 10 microns - Max 80 microns) Nominal particle retention - 25 microns Flexural strength - 3,500 PSI Excellent bubble uniformity Low energy consumption