Hi folks, hopefully someone here knows the answer...I did a search, but came up with different info vs. what Pentair shows on their website.
I am replacing an old-school vertical slider backwash valve on my (2002-vintage) Pentair FNS Plus, 60 Vertical Grid DE filter.
I want to replace it with a Pentair "high-flow" multiport valve.
I'm trying to determine / confirm which Pentair Multiport Valve part number I need; From what I can tell from Pentair's website, the 261142 is the "high flow" version, for an FNS Plus. The inlet on my filter is at the bottom port. Is this the correct part number?
I want to make sure, because I recall (and maybe I'm incorrect) something about there being FNS and/or FNS Plus filters, where the top port on the filter is actually the inlet, and not the bottom port?