RO membrane flow direction?

[120reefermadnes]

Hey, i just got my DOW 75gpd RO membrane from bulkreef but it doesnt say wich direction the flow should go

I want to change asap but dont want to put it in backwards

 

[mcarroll]

If the old one was working ok and is still in position you can just use that as your guide. Possible?

-Matt

 

[120reefermadnes]

Im not sure what brand membrane is in there now because the unit is set up for 100gpd and im switching the the more efficient 75gpd memdrans

 

[AZDesertRat]

The membrane will only fit one direction. The end with the large O rings or gaskets around the outside is closest to the screw on cap so goes in last. Did you buy a new flow restrictor to match the new 75 GPD membrane, they are different. If you have not already bought the restrictor, get a much better capillary tube you can adjust from Spectrapure or Buckeye Field supply rathen than a fixed restrictor which may or may not be correct for your exact water conditions.

 

[Buckeye Field Supply]

The end with the two small orings around the central stem goes in the housing first.


Russ

 

[120reefermadnes]

Thanks guys got it now