New Sand Filter

[jfgreco]

I am new to TFP and boy am I glad I found this site. Been reading through the forums for the past couple weeks. And read through pool school.

We installed a new 24" Hayward Pentair Sand Filter at the beginning of the season. I can't seem to get the pressure to drop below 16 psi after a backwash. Any thoughts?

 

[JohnT]

That may be perfectly normal. The filter doesn't really add much to the pressure. It's mostly a function of the plumbing and pump. I have a 1HP pump and a 24" Hayward sand filter and my normal pressure is 18psi.

 

[JasonLion]

Is there some reason you expect the pressure to go lower? Was it lower in the past? Every pool has a different clean pressure. 16 psi is well within the normal range for clean filter pressures.

 

[jfgreco]

I am new to pools. And people tell me that it should be more like 8-12. So that got me wondering.

 

[BadOleRoss]

When my pool was first installed my sand filter pressure was 10psi, when I had to place the sand filter because by dog chewed off the threads on the drain plug over the winter the new pump had a psi of 12. I changed out my 3/4hp pump yesterday and the new pump has the sand filter at 15psi. As long as it stays close to where it is I'm happy. I did nto a search regarding this issue and couldn't really find much. The only think I did find was that when the pressure rises 5-10psi, backwash the filter.