RO/DI and Booster Pump Experience

[SkunkerX]

No definitely don't put the pump after the membrane as well. Look, I've been running my pump for a year before the sediment filters and the RO membrane for a year, and it's been perfect. No pressure drops or increases due to debris. If you move it at all, just move it between the filters and the RO membrane. But that goes against everything I've seen. If you're that worried about sediment, buy a little pre-sediment filter that goes inside the 1/4" tubing before the pump.

You can put the pressure guage between the pump and the whole fillter system, or between the sediment filters and the membrane, or after, just realize if it's not directly after the pump you are not getting a true reading of what the pump is putting out, you're getting the dropped pressure reading after the filters.

I have it set up like this.......3 pre-filters then the pump then the gauge " its a 100 p.s.i. gauge and the needle bounces off the backside of the stopper at the zero its loud" then thru the membrane

then the switch then into the 4 gallon storage tank from there to the fridge thru a taste odor remover filter and/or thru a D/I to the fishtank/holding tank. I put the gauge after the switch and only got 20 p.s.i.

I found the adjustment screw on the switch but did some research and dont think there it one on the pump that I have. It's a 75 g.p.d membrane but takes me 2 days plus to fill a 40 gallon brute. I just emptied

it so I will clean it up and see exactly how long it takes to fill.

 

[SkunkerX]

Well according to my numbers and your equation I'm putting out roughly 19 g.p.d with a 75 g.p.d. membrane.

How would I be able to fix this having NO adjustment screw on the pump?