New Pentair FNS+ 48 D.E. Filter Plumbing (Sightglass??)

[rshady]

I just received my new Pentair FNS+ 48 D.E. filter in the mail, along with the high-flow MPV and a 'sightglass kit'.

Problem is, this "sightglass" is basically a clear piece of plastic that has threads on one end, and a big hole at the other. I'm sure you veterans know exactly what I'm talking about, but that makes one of us.

I've seen numerous sightglass before, but they were all small (maybe 1" diameter) and they screwed into the MPV, and they were closed (like a cup). This is closer to 2" diameter and wide open, if I screwed it into anything (which I don't even know where to put it, the MPV doesn't seem to have a place to screw it into) the water would just come rushing right out.

So, any ideas?

[rshady]

For example, this is what I expected...



And this is what I received...



Am I missing something?

[PoolDoc]

Well, on some filters Pentair began replacing true sight glasses with lengths of clear PVC -- but they aren't interchangeable.

If you've got a place to screw-in a sight glass, you'll need a sight glass.

Ben