In short: Do suppliers sometimes list BSPT as BSP?
I need a tee, 22mm each end with a BSPT in the middle for an expansion vessel to dangle from.
Why I think its I've used calipers on the threads and counted them, and the male end sticking out of the vessel is BSPT 3/4 with 14 threads per inch, BSP has slightly different diameter so its pretty clear from the measurements. Plust, the installation guide clearly shows PTFE tape, it recommends sealant too, and nowhere is a washer, o-ring, or gasket shown. Plus the end of the male thread most protuberant thins to a very thin edge that couldn't possibly mate with an o-ring. So, between all of that I think I can be pretty sure it needs a female BSPT, I mean it must be tapered, right?
What's getting me is that when I search for a 22mm x 22mm compression to 3/4" BSPT, I can only find listed BSP. Am starting to wonder if its a convention to not mention the T and just assume it? That would be nuts so surely only the tapered version is the thing really sold? Maybe a tapered female is rarely needed?
I did start to wonder if the tapering is only on the male section and now I think that a quick search is showing pictures of tapered male in parallel females with an implication that it seals fine. So perhaps females can be listed as just BSP because they effectively fit both parallel and tapered male connections. But the first guide that I read with all the thread counts and exact dimensions said that you need a male and female BSPT thread to get a good seal. But maybe thats wrong or I misunderstood it, or its just a little overzealous and with enough PTFE and sealant a decent seal can be made just fine.
Thanks and sorry for the dim question.
I need a tee, 22mm each end with a BSPT in the middle for an expansion vessel to dangle from.
Why I think its I've used calipers on the threads and counted them, and the male end sticking out of the vessel is BSPT 3/4 with 14 threads per inch, BSP has slightly different diameter so its pretty clear from the measurements. Plust, the installation guide clearly shows PTFE tape, it recommends sealant too, and nowhere is a washer, o-ring, or gasket shown. Plus the end of the male thread most protuberant thins to a very thin edge that couldn't possibly mate with an o-ring. So, between all of that I think I can be pretty sure it needs a female BSPT, I mean it must be tapered, right?
What's getting me is that when I search for a 22mm x 22mm compression to 3/4" BSPT, I can only find listed BSP. Am starting to wonder if its a convention to not mention the T and just assume it? That would be nuts so surely only the tapered version is the thing really sold? Maybe a tapered female is rarely needed?
I did start to wonder if the tapering is only on the male section and now I think that a quick search is showing pictures of tapered male in parallel females with an implication that it seals fine. So perhaps females can be listed as just BSP because they effectively fit both parallel and tapered male connections. But the first guide that I read with all the thread counts and exact dimensions said that you need a male and female BSPT thread to get a good seal. But maybe thats wrong or I misunderstood it, or its just a little overzealous and with enough PTFE and sealant a decent seal can be made just fine.
Thanks and sorry for the dim question.
