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#1
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Solenoid options for water shutoff
Looking for solenoid options that people may have regarding auto-top off systems.
Cheers
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pickled radishes flourish in the clear moon light |
#2
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if any complete systems exist those suggestions would be welcomed as well. I'm looking to top off 2 seperate containers but initiate the RO/DI unit for extended periods instead of constant on/off cycles so a high/low type unit is needed. The system also has to shut water off prior to the RO/DI as well to prevent constant waste water.
I would then run a pump from 1 of the containers to top off the sump
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pickled radishes flourish in the clear moon light |
#3
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I got mine from http://www.mcmaster.com/
part #5489T632 with a 24 volt transformer part #70235K16 both cost me about $60. works like a charm. I have it hooked up my RO/DI with a timer set for 1 hour a day, 7 days a week. then to a float valve in my sump. That way if my float sticks it will only dump in about 3 gal of water a day. Plus it will help in the tds creep from my RO unit. Hope this helps, Dirk |
#4
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Take a look at autotopoff.com.
You can use the double solenoids with the provided two level controller. Good luck. RYan. |
#5
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Re: Solenoid options for water shutoff
Quote:
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Guy Smilie |
#6
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I think we have identical setups, except that I used the 120V solenoids instead of the 24V. The timer is a perfect way to minimize the amount of time that the solenoids operate. Here is a little scematic that might help the OP. Notice that REDUNDANCY is a must on this type of setup.
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"You can't depend on your eyes when your imagination is out of focus." - Mark Twain |
#7
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I've bought but not yet used this one
Dema 401P, I bought two to redundantly control top off in my new tank, haven't installed them yet but... I also went with a 476P for the drain, its a planted tank with automated drains and fills...soon.
http://kimsupply.com/userimages/pg_91.pdf Dema is supposed to have a very good reputation for reliability... |
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#9
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Fantastic and thanks for the various options. I've gota say that I'm impressed with what www.autotopoff.com has.
Another quick question: Is a 90 psi rating for the solenoid too low if I want to use some of them in series between the water main and RO/DI unit?
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pickled radishes flourish in the clear moon light |
#10
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Average household water pressure is 50-60 psi.
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#11
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Ah, thanks very much. So 90 is safe on either side it seems.
Cheers
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pickled radishes flourish in the clear moon light |
#12
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I think you will be fine with the 90psi model.
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"You can't depend on your eyes when your imagination is out of focus." - Mark Twain |
#13
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You won't have your full residential pressure downstream of your RO unit...I'd guess something like 2/3 of it.
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#14
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you place solenoids before the ro unit.
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#15
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you don't have to place the solenoid before the ro unit. if you have an ASOV on the unit you can put them after the unit. that is what i plan on doing, because i have a my ro also hooked up to a storage container with a float valve.
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-Scott Whenever I’m about to do something, I think “would an idiot do that?” and if they would, I do not do that thing |
#16
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Just a thought. Anyone know where to get good quality solenoids that dont have metal in them?
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"You can't depend on your eyes when your imagination is out of focus." - Mark Twain |
#17
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Also when using valves close to the rodi with a inline tds or conductivity meters. You need to verify the that the valve is not causing a false meter reading. Don |
#18
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I purchased a set-up off of e bay that has worked well. I don't remember the exact price but seems like it was less than $50. It included a 120 psi solenoid valve, float switch, 12 v transformer, and bulk head mounts for both. It's a nice kit and I have not had any issues with it. I can dig up the specifics if you are interested.
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#19
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Arent you at all concerned that the metal shading coil could be made out of brass, or even worse, copper? Do you have a link for the STC valves?
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"You can't depend on your eyes when your imagination is out of focus." - Mark Twain |
#20
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Quote:
Don |
#21
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If the solenoid is upstream of your RO/DI then you would'nt see any copper in the product water at all.
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#22
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I use the SpectraPure LLC with solenoid and it is rock solid.
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Jonathan--DIBS Breeder and Card carrying member of the Square Skimmer Brigade (Click on the Red House to see my pics garage) |
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