Anti-backflow Needed?

mihzyd777

Well-known member
Jun 10, 2009
189
Manteca, CA
Pool Size
25000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Hello...need helo please and so far this site has been AWESOME!! We are building a 25k gallon pool. It will have 2 - 36" sheer decent that will be about 24" above pool and the a large 7' ft. Wide sheer rain waterfall on top of a pergola that is about 8-9' ft tall.
So question is....do I need Anti-backflows behind each of the sheer decents or is that not needed at all?

Thank you!
 

PoolGate

Gold Supporter
TFP Guide
Jun 7, 2017
5,204
Damascus, MD
Pool Size
29000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
I don't think you need it or want it. You want water to drain out when they are not in use.