brass float valve in float switch?

[heedicus]

hello all,
here is the deal. I have my 125 in a wall and am making a easier way to do topoff water. I have plumbed my rodi unit into my water main, I have a needle vavle to turn the water off and on before the filter. it goes into the filter, the waste line goes outside to top-off my pond and the purified water goes into a 20 gallon rubbermaid container that has a powerhead in it attached to a tube that goes into the main sump. the powerhead is controlled by a float switch to turn on and off automatically. Here is my question, I want to put a float vavle on the resivour (sp?) to stop the flow of water until I turn off the water at the needle valve. Would any heavy metals leach into my system from the brass on the float valve? any sugguestions for this setup?
Thanks,
tren

 

[Bill2]

Did you try the kent float valve witht he solenoid? It works on backpressure. So you would not have to turn on and off the ro

 

[heedicus]

I was trying to keep the costs down,
a link to where i could find one? i.e. marinedepot? champioin liighignt?
thanks
tren

 

[jorge1]

Do a search for float valve in US Plastic. They have mini float valves with 1/4" fittings for this purpose. They are just like the kent float valves, but for half price or less.

Jorge