[Scrimble]

i have just bought a second hand 4040 ro set up, it is from the cleaning warehouse same as this
http://www.ebay.co.uk/itm/Static-RO-Professional-system-40-7Litre-DI-TDS-/350484270227?pt=UK_HomeGarden_CLV_Cleaning_CA&hash=item519a7d8c93

i have been using for the past 2 and a half years a 300gpd ro with a booster pump, i have timed how fast the 40" is and its just under 1 litre per minute at 50psi. is this about right as i thought they were much faster than this?

[Window Washers]

have the prefilters been changed ? as this can seriously affect the amount you can produce if they are clogged or old.

50psi is not great pressure, get a booster pump and it will fly out trust me 

[Lee GLS]

Mine will fill a 650L tank in 2 hours with a oyster pump.

[Frankybadboy]

what pressure you runniing your systems with booster lee,ian

[Lee GLS]

I usually have the tap open so it's running at roughly 65-70psi, but in an effort so conserv water, Ive closed the waste tap more, and it's running at 120psi now, the tds has now gone from 007ppm to 012ppm

[Smart Carpet]

I usually have the tap open so it's running at roughly 65-70psi, but in an effort so conserv water, Ive closed the waste tap more, and it's running at 120psi now, the tds has now gone from 007ppm to 012ppm

Out of interest, what is your Tap TDS?

[Lee GLS]

375, but it does fluctuate a bit

[Smart Carpet]

375, but it does fluctuate a bit

Wow, my Tap TDS is 180ish, and water pressure allows 100psi when filling, but my TDS out is between 18 - 24..

I've got a mega old RO membrane in there, perhaps I ought to renew it!

Any suggestions for the best prices for replacement 4040 membrane?  First place that comes to mind is Gaps, but haven't bought much WFP stuff for ages..

[Frankybadboy]

375, but it does fluctuate a bit

Wow, my Tap TDS is 180ish, and water pressure allows 100psi when filling, but my TDS out is between 18 - 24..

I've got a mega old RO membrane in there, perhaps I ought to renew it!

Any suggestions for the best prices for replacement 4040 membrane?  First place that comes to mind is Gaps, but haven't bought much WFP stuff for ages..

just got mine from gaps,and a little extra but you know what your getting from gaps,to many cheap copys around.

[Dave Willis]

How much Frankyboy?
I've been looking at the Gardiners version. I suppose you keep yer old di vessels and send the water through them?

[Frankybadboy]

dave only brought a new membrain from them,£240 delivered.


managed to pick up the system of someone on here second hand,know that the membrain would need changing,but i got 8mths out that membrain,when he said it was fxxked