Predictably, I am with Andrew.
Standardisation, of course, started in the UK in the days when the world was a very much less connected place.
I'm just waiting for the Brexiters to say we should ditch all this Froggy metric stuff and get back to proper Imperial units (like they still use in Trumpland).
I made my son do a PTFE tape joing on a pressure washer part the other day :) Little wibbler will thank me one day!
You mean the imperial people with 2L bottles of coke?
Ah - is that the measurement system based on an incorrect calculation for the circumference of the Earth, imposed on (initially) France by a one armed Corsican in a silly hat :)
-- yes I use that system almost exclusively in my workshop, but am also able to work in other measurement systems with equal facility !
Andrew
Easier in multiples of 10.
I like metric, but I don't se why we should accept every law the frogs come up with.
Oh wow, you found one example and think that proves him wrong.
Is I used to using it in a used state? Or what is you thinking?
Or the middle, or where ever you cut it.
James, you will be absolutely delighted to know that the "ISO" metric pipe threads (GXX ) are entirely based on British Standard Pipe threads so you had better get used to it :)
Andrew
Pipe threads are taper cut, Sealant on the thread is squeezed out as the pipe is screed into the fitting.
Larger pipes are cut with adjustable dies so whatever thread size deemed appropiate can be cut.
Traditionally "Boss White" and hemp was used with water/steam. And"Stag" with petrol/oil.
Isn't there a case for the them being called Imperial because they originated in Imperial Rome rather than the days of the British Empire.
G.Harman
True.
BSP pipe threads are universal.
Easier to make a mistake too.
In a very past life I've used Boss White and hemp with water. The plumber who trained me was very old school. He must now be very dead. I've also, out of desperation used Stag on water joints. It worked but made a right mess.
Not quite correct. Pipe threads can be BSPP (BS pipe parallel) or BSPT (BS pipe taper)
BSPT theoretically seals with no gunge added, but it's a brave man that doesn't give it a smear of Bosswhite, if only as a lubricant. Nowadays I only use PTFE tape for temporary test set ups. Fr permanent screwed pipe assemblies I now use one of the Loctite pipe sealants - 545 for small stuff and 577 over 3/4" BSP
Andrew
So we didn't use to have compression fittings, solder, etc? Creating a thread on something sounds like a lot of hard work. And you've wasted huge amounts of material making the pipe thicker all the way along.
Link?
And stupidly illogical.
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