Ok, so leaking DE from my very old FNS48 lead me to upgrade.
It it is a tight installation, so wish me luck.
DE 80 seems to be identical in out side dimensions and plumbing to the old 48. Exception is reversed inlet and outlet.
I don't really mind the reverse, since it is time for a better valve but it winds up causing a swap of the valve outlet and backwash discharge, given I'm switching to a full featured valve. So the plumbing is requiring some gymnastics to include street 45s, and plenty of measuring.
I was going to go with a fullflowFX, but eventually the extra options won out on the hiflow, valve. Just this weekend I was would have loved the vacuum to waste feature. And since I expect to be running low GPMs, the additional head loss won't be much different, and at full power, my pump is already a monster, so no real need for high horsepower high flow. Also, I could not figure out a reasonable to fit the monster fullflo.
so now I can't wait till the weekend to get this installed. I'm going to do a bit of measuring and planning this week in an attempt to reduce any issues I might trip over.
Any thoughts, warnings, or lessons from other ps that have done a similar install?