Connection Between Tanks

[Zoletres]

This seems like it would be the best forum for my question.

What's the purpose for have a connection between tanks?
Does it make a difference if the connection is higher or lower on the tanks?

 

[LittleInch]

Odd question with no details....

Errr to flow liquid or vapour between the tanks?

If liquid then a low as possible, if vapour then a high as possible.

Far too many variables here to give any other opinion.

 

[Snickster]

I guess if you want to equalize water levels in the two tanks you just open the valve in the connecting pipe. Also if you want to fill at a rate higher than the vents of one tank is designed for you could fill both tanks at same time with 1/2 water level rise per unit time and vent rate shared between the two tanks. If I recall the first tanks in a waste water treatment plant that the influent enters are called equalizing tanks connected in such manner. Their is a process reason for this that I forgot. but since they are just storage buffer tanks I think the purpose is so both tanks contain approx. same mixture since influent content can vary widely. Search "equalization tanks" on internet..