I used one of these filters for several months before ordering a replacement. I was able to rinse it out and continue using it as it was clogged. My water is saturated with silt, iron and scale and the filter cleans it well. It starts to flow when clogged. You can then either replace it or rinse and reuse it. It took a while for the shipping and delivery of the replacement, but I think it's up to the USPS. This is a very good price for a cheap product.
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
NANPU 1/2" NPT Air Drying System - 5 Micron Particulate Filter, 0.01 Micron Coalescing Filter, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl W/Metal Gauge
23 Review
NANPU 3/8" NPT Compressed Air Filter Regulator Combo Piggyback, 5 Micron Brass Element, Poly Bowl, Semi-Auto Drain, Metal Bracket, 0-150 Psi Gauge
26 Review