ebay RODI systems

auker said:
I'm planning on purchasing an RO/DI unit tonight from ebay. Here's a link to the unit I'm looking at.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=20684&item=4357720132

However I'm confused about installation. There are three feed water devices to choose from. Either a 1/4 inch needle valve, a chrome 3/4 inch Tee with 1/4 inch ball valve, or two chrome 5/16 inch tee with 1/4 inch ball valve. My plan is to install this in line on the cold water for my washing machine. I know nothing about plumbing, which feed water device should I order? Also; if anyone has had a negative experience with this seller, please let me know.
Thanks for all your help everyone.
Click to expand...

This seller is AWESOME! I recieved the same unit you are looking at yesterday from this seller - I cant believe how fast the shipping was! the instructions are in laymans terms so you shouldnt have a problem understanding basic setup - the diagrams in the instructions lack a bit - but really its pretty strait forward.

Also if you have any trouble setting it up this guy will help you via email - I went with the Needle peircing valve thingbe.

it might be a little confusing at first but once you get it its simple. Also there are other ways to plumb these in - a quick trip to hardware store will ussually give you lots of ideas of other ways to plumb it to fit your needs.

Mine was 99 bucks shipped.
 
chigars4 said:
Hey sarduci,

What's a booster pump? Can I add one to my existing system?
Click to expand...

I bought my booster pump from Aquasafe as well and it greatly improved my production of RO/DI. It basically increases your water pressure to the 70 psi range. Most localities are in the 40-50 psi range and this is less than ideal for RO/DI production.
 
Thanks carpetride, I'll look into it. Great tip!

I don't think I we get even 40-50 psi. Our water pressure is lousy.
 
Was just checking back up on this......

Yup, booster pumps help, I'm looking at getting one soon..... It took way longer than it should of to fill my 90 gallon when I set it up. I'm probably looking at <40 psi in my house, and the fact my cold water comes out at the sub 60 degree range.... nice in the summer, bad for making DI water.....
 
quick question of my own - My husband keeps asking me how much water how fast - I cant answer him

I have a 100gpd unit - water pressure in my kitchen (where my RO/DI is plumbed in) is pretty good - although I've never actually tested it.

Anybody want to give a rough guess on how long it will take to fill my 90g?
 
It depends (the consultant in me coming out) on water temp, pressure,...

If I had to wager a guess I would say your probably averaging just over 1 gallon of DI water an hour maybe 1.3 on the high side.
 
1 gallon an hour?? So a booster pump is needed. Also sounds like it'd be best to get a storage tank, is that right? I have no plans of making an auto top off system just yet
 
carpetride said:
It depends (the consultant in me coming out) on water temp, pressure,...

If I had to wager a guess I would say your probably averaging just over 1 gallon of DI water an hour maybe 1.3 on the high side.
Click to expand...

ughhhhhhhhhh....

I better buy a few big water storage containers so I can have water at the ready at all times.

depends on temp eh? whats the best temp? My manual doesnt mention temp other then not to use hot water.

how much do these boosters run moneywise?
 
btw my water is coming out at about 55 degrees. after I run the cold water only for a few minutes I hit about 53 degrees.
 
55 is cold for an RO unit. As water temp decreases it's viscosity and density (down to 4 c) both increase. So the colder the water is the slower it passes through the filter. Ideally, you should be up in the 70's. The trade off is if you use your hot water from your water heater there are usually more containinates which means your filters will scale and clog faster, and thus slow down. A booster pump will also help in that the rate of osmosis is also tied directly into the pressure. The higher the pressure the faster the water treatment. FYI, typical industrial desalination plants run at 40+ bar, which is equal to about 588 PSI.
 
My system is rated for 100 gpd as well. I can't remember what my water pressure is. My unit is out in the garage. Currently, it takes about 90 minutes for me to produce 2.25 gallon. At that rate, in a 24 hour I shoudl be able to make about 36 gallons (24 hours / 1.5 hours * 2.25 G/hr = 36 gallons). So for you, it should take about 3 days. :-P Of course your mile may vary depending on your water pressure and the temperature of the water going through the membrane.

BTW - when I filled my 55, I just went to the store and bought some water. I was too lazy too impatient to wait for my RODI system to make 55 gallon. :P

Minh

PS - congrat on your new tank. Saw your post looking for a tank in the MARS forum. Shawn told me how you got your tank. Congrat.


Sierra said:
quick question of my own - My husband keeps asking me how much water how fast - I cant answer him

I have a 100gpd unit - water pressure in my kitchen (where my RO/DI is plumbed in) is pretty good - although I've never actually tested it.

Anybody want to give a rough guess on how long it will take to fill my 90g?
Click to expand...
 
Sierra said:
ughhhhhhhhhh....

I better buy a few big water storage containers so I can have water at the ready at all times.

depends on temp eh? whats the best temp? My manual doesnt mention temp other then not to use hot water.

how much do these boosters run moneywise?
Click to expand...


LOL That's what Brute trash cans are for! I keep two Brute 32 gallon trash cans in my shop full at all times. 1 for topoff and 1 with salt mixed and waiting for the next change or catastrophe.

I believe mine was $65 (the pump).
 
thanks for the info guys ... I may just end up using the RO?DI to fill tank as much as possible and then get impatient and run down to walmart and buy the rest of the water.

mn95616: Thanks! after having a bunch of deals fall through because of bad tanks/deals I thought I was never gonna find what I wanted. FINALLY PHEW! gonna try to make the march meeting the last 2 meetings were on my friends b-day and on my anniversary... making it hard to get down there!
 
ok well mine is installed and after futzing with leaks for 3 hours I finally turned the thing on and holy cow - It take about 2.5 minutes to make 8 oz of water. If My Horrible Gorrilla Math is Correct does that mean I am Making a gallon every... oh say, 40 minutes?

I hate Ro/di.
 
But it would have come with very clear directions, would not have leaked, has a good warranty and someone to back it up when you need them and will answer the phone and e-mails promptly if at all. Walter also uses true 75GPD Dow Filmtec membranes and not the cheesy 100 GPD unless that is what you request, they use vertical refillable DI cartridges...........

You get what you pay for.
 
cant afford to pay for more - guess I'll just have to be the bum of reefcentral

On a Lighter note - I just filled a gallon jug - took 30 minutes - at that rate I'm rather pleased!
 
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