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who knows pipe threads ??? 2BSP 4BSP etc
Posted: Sat Dec 22, 2007 11:48 am
by steptoe
I am looking up Blackwoods website on gas pipe fittings and strike a new term/size it is 2BSP , 4BSP and 8 BSP.
Can anyone explain the difference between the 2 , 4 and 8
http://www2.blackwoods.com.au/infoBANKP ... &P=2024660
ta,
Posted: Sat Dec 22, 2007 11:50 am
by steptoe
WAKE UP !! IT IS half, quarter and one eighth, doof !!
Posted: Sat Dec 22, 2007 10:07 pm
by subanator
Posted: Sat Dec 22, 2007 11:54 pm
by Ben
steptoe wrote:WAKE UP !! IT IS half, quarter and one eighth, doof !!
Hehe
When you ring Blackwoods make sure you are sitting down too...
Posted: Sun Dec 23, 2007 11:33 am
by steptoe
Ahh, subanator, why couldn't i find that ?
Just when I thought I finally undestand this sizing secret it bites me. The main suppliers gone on holidays for a few weeks and my supersized stuff arrives in the post !
how close is 1/8 NPT to 1/8 BSPT? so close it ain't funny !
I think price is why I have forgoten about Blackwoods for past seventeen years !!
Posted: Sun Dec 23, 2007 4:39 pm
by Ben
steptoe wrote:
how close is 1/8 NPT to 1/8 BSPT? so close it ain't funny !
Same thread, only npt is tapered.
Posted: Mon Dec 24, 2007 12:36 pm
by tim_81coupe
BSPT is tapered too.
BSP isn't.
My understanding was that below 1/2" NPT and BSP are the same thread (ie they have the same thread count).
I could be wrong on that though.
Posted: Mon Dec 24, 2007 11:36 pm
by Ben
Der, of course, I was reading BSPT as "British Standard Pipe Thread" not "British Standard Pipe Taper (Thread)"
BSP is 55 degree thread angle, NPT is 60 degree (ie the angle of the little V grooves. Also BS is rounded in the V's and NP is flattened.
Posted: Tue Dec 25, 2007 10:20 am
by steptoe
for the sanity of future generations we are gonna have to metricate everything..oneday
Posted: Tue Dec 25, 2007 4:28 pm
by PeeJay
Whoever invented the imperial system should be shot!!
Posted: Wed Dec 26, 2007 10:15 am
by steptoe
some of the imperial is sorta OK, but whitworth !! JFC !!!