top off tank siphon problem

[Seehag]

I put together my own Top off tank. I purchased a 15 gal water tank or bottle rated for food use. I installed a 3/8 hose on a small power head and dropped it in. I plugged the power head into a plug controled by a contact that is controled by the top off float. The voltage going to the fload is 12v dc. Everything works as planned except that when the pump shuts off the water continues to siphon into the sump....No Good could flood or over flow......especially if I lost power at the same time.


So I tried routing the hose to the top of the tank stand then down to the sump, same results. Tried routing it short out of the tank and into the sump, same results. The tank is sitting on the same hight as the sump and the top of it's water is higher than the top of the sump level by 12". I also tried leaving the hose up higher than the top of the water but still siphoned.

I know that the answer is probably right in front of me can anyone help me out on this....


Art

 

[ScottS]

I ran into this when I plumbed a 35 gallon container as a top off. What I found was that the output from the top off hose had to be higher than the level of the top off water to give a siphon break when power was cut. Otherwise a T would have to be installed in the top off hose And this t would extend up higher than the top off water level as to not create a siphon.

Hope this Helps.

ScottS

 

[Seehag]

Thank's for the answer. As I was looking around for my next problem I found the t idea in another thread. I will go to the hardware store tommorrow. Now if I can only find some decent plans for a reverse durso to put in the fuge to stop all the dam bubbles......


Art