Lower pressure RO membrane flushing

tram · Mar 25, 2018

Hi
When running normally the pressure to my RO membrane is about 60 but when I turn the flush tap it drops to less than 40. I have an auto shut off valve in place and have to have no pressure tank side to enable manual flush to work.
Is that pressure drop normal and ok for flush
Any suggestions

Thanks
Tony

Syntax1235 · Mar 25, 2018

Yes, it’s normal. The water is being directed across the membranes to clear any debris from the RO process.

Buckeye Hydro · Apr 3, 2018

When you open the flush valve you are bypassing the flow restrictor - that's why the pressure drops. This is normal.

Russ

Buckeye Hydro · Apr 7, 2018

Its not uncommon for us to get phone calls for help with poor system performance - only to determine that the flush valve is open. When that's the case, the gauge pressure will be minimal (e.g., 10 psi), and of course the resulting performance is very bad.

Russ