Automated topoff

[Mike O]

Is it possible to use a plastic setup from a toilet tank to control the flow of water from an RO/DI unit? I hate adding topoff every day!

TIA,
Mike O.

[RWD]

I suppose it is possible to use a toilet fill valve hooked to a ro system but it's not the best way. The proper way is to get a float valve kit made for this specific purpose. It contains a float valve and a solenoid that attaches to the ro unit. The important part here is the solenoid. it shuts off the water flow going INTO the ro unit while the float valve maintains the correct level in the sump. This is important because otherwise water flowing into the ro system would flow 24/7 even when there is no demand for more water resulting in a LOT of extra waste water. A toilet valve would turn on and off the flow into the sump but not control the water flowing into the ro system. HTH, Bob

[mhossom]

I am having a hard time fonding the parts I need to make a float switch. Can someone direct me to a supplier? Thanks.

ps. I would loke to make a switch like the one on snailman's page.

[geofloors]

[ QUOTE ]
So speaketh mhossom:
I am having a hard time fonding the parts I need to make a float switch. Can someone direct me to a supplier? Thanks.

ps. I would loke to make a switch like the one on snailman's page.

[/ QUOTE ]

Mike,

I can hook you up with the Grainger float switches I use. Let me know if you want one and I'll order you one since I need another for my prop tanks.


George

[mhossom]

<blockquote><font class="small">Quote:</font><hr />
<blockquote><font class="small">So speaketh mhossom:</font><hr > I am having a hard time fonding the parts I need to make a float switch. Can someone direct me to a supplier? Thanks.

ps. I would loke to make a switch like the one on snailman's page. <hr /></blockquote>

Mike,

I can hook you up with the Grainger float switches I use. Let me know if you want one and I'll order you one since I need another for my prop tanks.


George

[/ QUOTE ]

Thanks George. I sent you an email abouth this.

Mike

[dgasmd]

Mike:

If you want a much more expensive and yet just as good option, I have a brand new Lifereef float switch with the attachment to hang on to a tank's edge. It cost me about $100 + shipping when I didn't know any better and have actually never used it./ubbthreads/images/graemlins/mad3.gif
Looks great and works the same I guess than the $5 float switches other people have. But it is a Liferref product /ubbthreads/images/graemlins/moron.gif /ubbthreads/images/graemlins/puke.gif

Alberto

[David Grigor]

This is one of those areas where you need to think through . Especially if combining topoff with Kalk additions.

The key is to have redundancy in place. It is not quite as important to make sure you have backup system in place if top fails in the off as you usually have enough time to realize there is a problem. It is more important to have redundancy in case it was to be left on. Diluting your tank water, flooding your floor, and adding too much Kalk to fast ( if you use Kalk ) all can be fatal.

For example: if you use a float switch make sure more than one. If possible may want to combine several techniques such as a doser pump as well as a switch or valve. Top water resevoir with limited supply. Just to name a few possibilties.

But I will say that RO/DI with float valve is a pretty good choice providing nothing can get caught under the float valve. You may want to add a float switch that controls a solenoid that cuts off the RO/DI if water level for some reason goes higher than the float valve as a backup to the float valve kit because your dealing with a possible endless water supply.

Just be smart about it......