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All plumbing is not metric, but some of it is. It's not all imperial, but some of it is. I think the white stuff is imperial (but sometimes given to the nearest metric conversion) and the grey stuff is metric. Or that's how it seems to be here in Spain. I've got to the stage where I take a mangled piece of plastic tubing into my local fonteria, and a white-haired lady, the same age as my mum, goes into a storeroom and comes out a minute later with the exact replacement part I need. In my last place I made friends with the old boy who ran the small, but perfectly formed, fereteria, and he helped me a lot. Well, I showed him the picture and he sold the thing to me.
stevep
Airhead
In the Europe, is all plumbing metric?
I’ve been at the water-Lego in our place the last two weeks and the number of stupid sizes, variations between manufacturers and obtuse naming conventions is staggering. Of course a 2” pipe isn’t actually 2 inches. Or 51mm. It’s just a random number somewhere in that ballpark. And there’s three different sizes depending on manufacturer. Oh and push fit, compression and solvent weld are all different sizes too. And supply and drain are all different sizes. And the boss on the side of this ring seal soil stack fits nothing that has ever been manufactured.