(I have tried contacting the company through Revain with no response.) I have just installed a new R-Zero filter. The zeros I usually use say replace when the tester reads 006. It doesn't say "Update" though. If I switch to 6, 8 or even 10, I'm not a water drinker. At the first water intake, the tester read 30. I thought maybe the glass was dirty so I washed and dried it and ran that water through the filter again. Checked again and it's still at level 11 after running the water twice. So either the filter is defective or there should be replacement instructions.
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 Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
π§ NANPU 1/2" NPT Compressed Air Filter Regulator Combo Piggyback with Auto Drain, 5 Micron Brass Element, Poly Bowl, Metal Bracket, and 0-150 psi Gauge
18 Review