VF Owners - What's your backwash GPM?


Gold Supporter
Jun 17, 2010
Pleasanton, CA
Just curious what VF owners use for their backwash GPM setting.

I have an older pool, with 1.5" piping, and reluctant to go much above 45 or 50 GPM. I just installed a VF pump yesterday, and based on viewing the filter pressure, I think the old 1 HP pump may have been pushing about 50 GPM or a bit less. It has a 48 square foot DE filter, and I just replaced all the grids today, due to the Leslies replacements not lasting much more than a year. (The internal skeletons started breaking, the original grids lasted about 10 years.)

Thanks for your input,



TFP Expert
May 20, 2007
South Central NJ
75 is pretty much the max for 1.5 plumbing but 65 is about perfect for backwash. While the suction lines are 1.5", having them feed a 2" main to the pump helps!