lets see those RO/DI set-ups

[prime311]

I might have the same RO/DI as you, its the Purewater club one. I'm not sure how the ASO works though, i didn't buy it with the 'tank'. Are you saying if I just stick the outlet tube into water it'll create back pressure and shutoff? Does that also shutoff the 'bad water drain'? I hooked my RO/DI up to my utility sink faucet so I was wondering if theres any harm in just unhooking it when its not in use. I thought i'd heard something about not letting the RO membrane dry or it ruins it, but I'd like to avoid not being able to use my utility faucet or having to needle into the old metal tubing in my basement.

 

[txmedic1]

its not the waste water outlet that creates back pressure. its either the ro (drinking) water outlet (which is connected to the pressurized steel tank) or the ro/di (reef water) outlet, which is connected to the top bin that has a float valve. the pressurized steel tank, and the float valve are the ones that create backpressure to the ASO, that shuts off the unit.
first make sure that yours has a ASO, its a small "box" with 4 tubes connected to it. 2 on each side.
if you want to keep from having to constantly turning the unit on and off from the water source, i would create a holding bin, like my top bin, for your drinking water and your reef water.
let me know how it goes, good luck.

 

[prime311]

I'm not using it for drinking water, so i don't have any pressurized bins to store water in. I have a couple garbage cans and 5 gallon buckets I'm working out of atm heh. It does have an ASO, I read that in the manual. I'm just not sure how I can create backpressure on the water out tube w/o a pressurized bin holding the water.

 

[txmedic1]

then all you need is a float valve. when the bin fills with water, the float valve closes, creating back pressure, then activating the ASO. the float valve works similiar to that of a toilet tank. some of the better LFS may stock a float valve. i got mine at the local tractor supply store. the float valve is used by farmers with the livestock water tanks, and uses a garden hose. i just went to home depot and got a garden hose to 1/4" adapter to fit my ro/di line. if you scroll through the thread, you will see pics if my float valve. its black in the top bin. also, some actually used a float valve from a toilet tank. you might be able to get it to work for you also.

 

[prime311]

Awesome, thanks I understand what to do now.

 

[txmedic1]

kool, let me know if you need anymore help, and let me know how it goes! good luck!

 

[prime311]

I probably will once I start looking at float valves, cause I'm not really sure how to hook it up to my setup, but i thought I'd see what I can figure out on my own and go from there.