Lorne

Thanks for the feedback. I appreciate your assistance. That pretty much tallies with what I've been able to get from others. Funny that there is nothing definitive. Thanks again.

I'm new to this pool stuff and need advice. In November I purchased a home with a 27 foot above ground pool with a Hayward S180T sand filter and an SP2290 pump. I believe the system is 1 year old. I assume the previous owner installed the correct type and amount of sand in the filter. My question is: What should I adjust and set the initial pressure to after backwashing? With the (suction) balancing valve, I can adjust it anywhere from 2 to 10 pounds. Too low a flow is not good, nor is too high a flow. Sadly, there is no flow meter in the system so I cannot use that as a guide. There are no owner's manuals, though they are on the way. I do know, though, that they do not give any pressures since "every installation is different." I'd appreciate any advice you can give me.