The water from the APEC ROES-50 system caused a tingling in the throat after a few seconds of drinking. Tested with a PPM meter and showed under 10 (which is normal compared to when I first got it and the water was great). I knew these couldn't be the first 3 levels as they were recently changed. After replacing the 5th stage, my throat doesn't itch anymore. Also, installing the 5th stage was easy.
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 Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
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