Auto top off with garbage disposal air switch?

[xTJxSLIMx]

I have been experimenting with relays and floats and made myself an ato that has had no issues with a backup float. I noticed my ro/di reservoir is getting higher tds. I read that short bursts of use increase tds. The first few gallons of use are the highest tds. Therefore longer periods of use will keep tds low and hopefully get more life out of filters.

I found that I can just use a 12v 8-pin relay, wire it to latch with the bottom float and unlatch with a top float. I would like to use a typical vertical reed float at the bottom of my brute container since I have an abundance of them, but typical vertical reed float switches should not be submerged past the wires. So I figure a a horizontal float on the side but reviews I see are less than appealing. Therefore I think it might be best to use a pressure switch with an acrylic tube that reaches the bottom. But I can't seem to find a pressure switch that operates less than 40lbs. So I was wondering if a garbage disposal air switch would work with these low of pressures and could even be used as an ato switch. Anyone have any experiences with trying this? I feel stupid not looking into this before. Also if the pressure switch operates at higher pressure, would putting a larger diameter pipe at the end of the tube build slightly higher pressure?

 

[laverda]

I don’t know the answer, but it is an interesting idea. My guess is they take very little pressure to operate. If I am understanding how you want to use it, you want it to turn your ATO on when there is no pressure. If so you may need to change or rewire the relay.

 

[xTJxSLIMx]

I don’t know the answer, but it is an interesting idea. My guess is they take very little pressure to operate. If I am understanding how you want to use it, you want it to turn your ATO on when there is no pressure. If so you may need to change or rewire the relay.

Wow, I didn't even bother reading up on them. I assumed by pushing the button you compress a bubble under the button creating pressure in the tube thus making the switch closed circuit.

It already looks like a Tsunami at-1 auto top off minus the suction cups and black tube.

 

[laverda]

Wow, I didn't even bother reading up on them. I assumed by pushing the button you compress a bubble under the button creating pressure in the tube thus making the switch closed circuit.

It already looks like a Tsunami at-1 auto top off minus the suction cups and black tube.

I think your correct. That is why I said you may need to rewire or replace the relay. I think you want it to come on when pressure is low, not high.

 

[xTJxSLIMx]

I think your correct. That is why I said you may need to rewire or replace the relay. I think you want it to come on when pressure is low, not high.

Wow, I'm dense tonight. Your correct Sorry, going through a rough divorce is taking it's toll on my sleep.

 

[laverda]

Been there! It’s no fun! Good luck!