I can’t say if it’s right or wrong, could be wholly unnecessary, but we have essentially what you described, with this filter inline just as you described and it functions fine. Granted I paid less than 1/2 that price when we built these skids 2 years ago…
The one thing I like about the Ys (I haven’t tried it, and assuming I’m reading the CAD drwgs correctly) is that the thumb knob on the end should act as a cleanout, so if I make that our handwash/drain hose our filters will always be clean…
Check the filter screen size too, I think we run 20 mesh in ours IIRC
Once we have something settled, I just reorder whatever I bought last time…but if I recall I was told to get something between 20 & 50 (or maybe it was 80). I ordered whatever I found first that fell within the range I was told, and will just reorder that if needed.
You should see the type of sand/grit particle size you can pass through a 20 or even 50 mesh size. All which will SCUFF the ceramic plungers and wreck the HP and LP packings. I would run 100 mesh if I could but you have to babysit it so it doesn’t clog
I use the ones that IBS linked above. They work well and I like the clear bowl versus the banjo filters where you have to take it apart to see if it needs cleaned. Running one on the 8gpm and the 5.5gpm.
LOL I spoke too soon. Fired up my machines today and wouldn’t you know it both of those filters from PressureTek are leaking. Not leaking from any of my connections but from the little pot metal crimped pieces. I have to say, I can no longer recommend these as I know for a fact that nothing I did could have compromised them. Both are brand new although one has been sitting on the shelf for a year or so but still.
Already got some new ones any they’re polypropylene so if this rain will ever slow down I’m going to pull it outside and drain the tank and redo the filters…again. Haven’t heard anything back from PressureTek about these brand new filters leaking but they’re on eastern time so maybe I’ll hear something tomorrow. Not really holding my breath with them. I haven’t had quite the customer service experience with them that IBS receives and I hate the fact that they won’t speak with anyone on the phone. I’ve always bought whatever I could from them but I’ll probably start looking elsewhere.