Automatic top up for the least amount of pennies

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Hey all!

Since we are busy with a hobby which requires a lot of time, and a lot of $$$, I was wondering whether we can see whose top up system is actually the cheapest :)

So anyone? :)

T :razz:
 

Alan

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I used a cheap float switch which i hang over the brace of the sump and connected a small pump to it. All in all if i remember correctly about the R250.00 mark for pump and switch.
 
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kewl kewl :) Can't wait for the other replies. I'll post my setup tomorrow - on my way to Cape Town today and back tomorrow round about 4pm :)
 

jacquesb

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English Henk! The problem is that Tinus stays over at Spier Winefarm. A bit of a distance to travel! ;-)

I use a 12 Volt float switch and a 12 Volt pump in my RO drump.... (connected to my 12 Volt car battery of course which I also use for my "emergency power outages" :)

Cost - a wee bit more than R250 - R140 for the float switch, and R114 for the 12 volt pump = R254
 
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i can are like to be spoken english deliciously when i are wearing my jean pant :p

I know aqua concepts can build little TU units... they found the mother load of float switches :p
 
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Tobes

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I bought a small pump from LFS for R75 and a 220v float switch from Andrew at Eco-acuatics for R100.:wave2:
 

jacquesb

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i can are like to be spoken english deliciously when i are wearing my jean pant :p

I know aqua concepts can build little TU units... they found the mother load of float switches :p
Cool! And cost-wise to the "man on the street"??
 

viper357

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I saw someone posted recently their auto-top up cost them R75, it was a gravity fed one with a stockmans valve I think, I will see if I can find that post for you.
 
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it was geoffrey, i saw it very nice but only negative point is that the ro drum must be higher than the sump, and doesn't look nice if you have a drum next to your DT./

but it works like a charm:thumbup:
 
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Think mine is probably the cheapest then :) R35 :) Toilet float valve? Voila! :D
 
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the cheapest semi-auto top-up would be a simple kalk dripper (plastic or glass container of suitable size, piece of airline tubing and a plastic airline clamp...) dripping at a rate just slower than your evaporation rate. You would then only have to top up the difference once every week or two, and of course keep the kalk dripper filled.

Personally, I have my RO outlet coupled directly to my kalk reservoir and to the return pump chamber of the sump via two plastic toilet float valves. It does have a risk of flooding should the valve become stuck, though, but this has not happened in about 7 years, since I started this way.

Hennie
 
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I saw one.... Solid water bottle inverted - must not be able to colapse under presssure. Inlet just under water line, outlet deep in tank.

Water evaporates, drops below inlet, breaks vacuum, water flows into tank and fills above the inlet again making vacuum again.

I also had an idea for a bottle with PVC coming out the bottm and a ping-pong ball and o-ring in that pvc tube. water drops, so does ping-pong ball and allows water to flow out until water level pushes it up again and seals it. Probably safer to use toilet valve though.

Having said all that I don't trust anything I build so I bought an Osmolater:yeahdude:
 

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