Ro membrane noise

[ruck'n'reefer]

I just changed my ro membrane. I increase from a 25 to 60 gpd.

I can hear a noise (hiss) at the flow restrictor. It doesn't seem to be air... but that is what it sounds like. The fitting is tight.

Any suggestions would be appreciated.

TIA Rob

[SpectraPure]

You can't be sucking air in anywhere.
Water would leak out first.

What is your membrane pressure?
If high, that could contribute.

You now have 3 times as much water
being 'squirted' through the flow restrictor.
That's probably enough more that now it is
audible.

I should have asked this question first:
Did you get a FR-60 flow restrictor to match
the 60 GPD membrane?


Scott
SpectraPure, Inc.

[ruck'n'reefer]

I did replace the flow restrictor. I think you are right. The increased flow is audible (when I put my ear on the housing). Thank you for your reply.

One question... while I have you here. I am adding another stage to my system. I have a 2 stage plus RO, and am adding another prefilter. Should I add a larger micron filter first?

I guess ideally what would be the best set-up for 3 filters pre-RO?
Thank you again