What Are These Water Separator Fittings?

[Centercut]

Gotcha. I appreciate your opinion. Don’t agree, but that’s ok. Thanks. 

Mike. 

 

[ssgmac]

Concur with @humdinger - I've been operating just as he describes above for well over a year and a half, and many hours (15 hours) run time on my "gold" filter. On the Tuxing and the other brand, they have the M10*1 threads. Say what you will, but its been proven out my both @humdinger and myself.

Me too. ..and let's face it, many of these MIC fittings, even when they're the same type of threads (like FIP to MIP), can be so far off with the tolerances, that they fit like they're 2 different types of threads, so what's the difference? With NPT threads, the window is 2½ - 3½ turns by hand makes it a good fit. I've been lucky to get 2 turns on a lot of these. I just give them 3 wraps of Teflon tape and it's been all good.

When I first started reconfiguring HPA lines, I thought they were all NPT and figured the tight ones needed to be retapped, so I retapped whatever they were with ⅛" NPT and it's never been an issue, ..and this was yyyyears ago, ..like 2013/14. As long as you get 3 or 4 full turns on it, if it fails, the worst thing it will do is leak. As long as it's not stripped out.

 

[ssgmac]

What type and size of threaded fittings are these? It’s the Tuxking separator. They are parallel threads with a washer seal in the female side. Both ends have the same size, but different thread pitches.



View attachment 40442View attachment 40453

I think it's a universal fitting. The seal is made by burying the face of the fitting into that Teflon disk at the bottom, where NPT and BSPT make their seal when their tapered threads engage the mating threads (MNPT to FNPT and MBSPT to FBSPT). The T in both types means Tapered. BSPP is a running thread. P means Parallel and need to be sealed by some kind of o-ring or one of those Teflon disks. It's possible that this thread in this. ...a'hem ..thread is BSPP. But I have NPT screwed into mine and it made up like it was going into a FIP thread. That's why I'm thinking it might be a sloppy universal thread
Edit: the NPT/BSPP/BSPT size is ⅛"ø, eventhough it's physically about ⅜"ø