View Full Version : How often should I flush the RO Membrane?

09/06/2016, 02:35 PM
What is optimal for getting the best performance and longevity from my membrane?

09/06/2016, 03:06 PM
can't tell you what the optimal frequency or duration is, but i flush mine every time i use the filter. flush before use, flush after use. just a minute or two each time.

i once forgot to close the flush valve and opened the DI valve while still flushing, and it was happily producing RODI.
didn't notice it until i realized it was taking almost forever to make 5 gallons of RODI water :) it got a REALLY good flush that day :lol:


Buckeye Hydro
09/06/2016, 03:40 PM
The more often the better, but at some point you have to balance the lost production time, and cost of water into the equation.

Buckeye Hydro
09/06/2016, 03:41 PM
The most important time is at the end of a production period.

If you do it at the beginning, I think a lot of people confuse what a DI bypass does and a flush valve.

09/07/2016, 01:08 AM
I only do it at the beginning, I have two flushes though. one that flushes the waste side of the membrane and one that flushes the product side before it gets to the DI. I do this every time I want to make water.

Buckeye Hydro
09/07/2016, 02:11 AM
So people don't get confused:

Waste water side is called a Flush Valve.
Product water side is called a DI Bypass.

Both options are available on our systems.