CDL 240 GPH RO Pump to Head Tank

[johnallin]

Setting up my new 2 post CDL 240 Hobby RO and wondering if the pump will move concentrate vertically about 8’ to my head tank and, if so, what size hose - or tube - you’re using to transfer to an elevated tank.

With the single post, I would just recirculate in the sap tank and then pump up with a Gould pump using a hose at the tank drain. Worked great.

This time I’d like to recirculate for a bit, then run through the RO and straight to the head tank.
Any suggestions appreciated.
Thanks.
EDIT. change permeate to Concentrate.

[wnybassman]

Are you meaning sending concentrate straight to the head tank? I have always done this with my RO with various procons from 200gph, 265gph and 350gph. I valved it so I can switch from recirculating back into the tank, to sending some to the head tank, and back to recirculating. Always (ALWAYS) say to yourself when doing that though "open one before closing the other". The pump absolutely doesn't like both valves closed. lol

[johnallin]

Are you meaning sending concentrate straight to the head tank? I have always done this with my RO with various procons from 200gph, 265gph and 350gph. I valved it so I can switch from recirculating back into the tank, to sending some to the head tank, and back to recirculating. Always (ALWAYS) say to yourself when doing that though "open one before closing the other". The pump absolutely doesn't like both valves closed. lol

Thanks Noel, and yes, I meant concentrate - corrected my post.
I’m thinking the tube should match the 5/8 coming off the RO or be smaller ID.
If I can recirculate and get the collection tank up to 4%, I’d like to then pull from there and go straight to the head tank at maybe 8%. Seems reasonable, but want to see how you guys make that final transfer vertically.
Thanks!

[wnybassman]

Mine shoots up at least 8 feet, probably closer to 10 feet. My normal hoses are 5/8", but the "pipe" I use to shoot up to the head tank is a chunk of 1/2" RV hose. No specific reason other than it had a garden hose fitting already on it that I could easily attach to a camlock fitting.

[dcast99]

Shold have no problem pumping directly to your head tank. With a similar size RO we pump 10 feet to our head tank. Our output hose is 1/2 inch so we just extended it with some 1/2 inch 30P mainline. Ours will also concentrate to 5 or 6% on one pass depending on how much the evap needs at the moment. Will be looking at adding a recirc line.

[johnallin]

Mine shoots up at least 8 feet, probably closer to 10 feet. My normal hoses are 5/8", but the "pipe" I use to shoot up to the head tank is a chunk of 1/2" RV hose. No specific reason other than it had a garden hose fitting already on it that I could easily attach to a camlock fitting.
Thank you.

[johnallin]

Shold have no problem pumping directly to your head tank. With a similar size RO we pump 10 feet to our head tank. Our output hose is 1/2 inch so we just extended it with some 1/2 inch 30P mainline. Ours will also concentrate to 5 or 6% on one pass depending on how much the evap needs at the moment. Will be looking at adding a recirc line.
Thank you.

[johnallin]

Mine shoots up at least 8 feet, probably closer to 10 feet. My normal hoses are 5/8", but the "pipe" I use to shoot up to the head tank is a chunk of 1/2" RV hose. No specific reason other than it had a garden hose fitting already on it that I could easily attach to a camlock fitting.


Shold have no problem pumping directly to your head tank. With a similar size RO we pump 10 feet to our head tank. Our output hose is 1/2 inch so we just extended it with some 1/2 inch 30P mainline. Ours will also concentrate to 5 or 6% on one pass depending on how much the evap needs at the moment. Will be looking at adding a recirc line.

After recirculating some 1.5% sap down to 4.5, tonight I pumped directly to the head tank...worked flawlessly and took the 4.5 up to 7.5.
Got to say I was impressed.

Next I need t need to work on some kind of manifold and/or 3-way valves to ease the rat's nest I had with hoses all over the place doing a rinse! Spent Way to much time wrestling with hose tonight for my liking.
I'm really impressed with the new RO by the way.