Took me two seasons to actually understand the 6 way valve on my sand filter, so I wrote down what each setting does
i'm not an expert, just an above ground owner who spent way too long confused by the multiport valve on my sand filter. figured i'd write down what i wish someone had told me starting out, since new owners ask this constantly.
big rule first: always shut the pump off before you turn the handle. switching under pressure is how you wreck the seal inside. learned that the expensive way.
what each position actually does in plain english:
- filter: normal mode, lives here 95% of the time.
- backwash: reverses flow to flush gunk out of the sand. run it til the sight glass goes clear, usually a couple minutes.
- rinse: run this 30 seconds right after backwash, it settles the sand bed so you don't blast dirty water back into the pool.
- waste: sends water straight out, bypassing the filter. great for vacuuming algae or dropping the water level.
- recirculate: pump runs but skips the sand, handy when you're adding chemicals.
- closed: everything shut, only for service.
the one that gets people is skipping rinse after backwash. don't, or your first minute back on filter dumps dirty water in. the positions are the same on any 6 way valve regardless of brand, these aren't specific to mine.
fwiw i'm running an aquastrong sand filter setup, picked it mostly for the built in timer so the pump cycles on its own and i don't forget to run it. but the valve positions above apply to any multiport, doesn't matter what's on your pad.
anything i got wrong or would add?