So.....take bottle to van, try to put bottle in cupboard where the old bottle came from

It does fit, with a bit of a shove

Ok, so change the regulator

It's a clip fit thing and the bottle isn't.

Drive 15 miles to nearest caravan type place, buy new regulator.

Drive home, make coffee, read packaging on regulator

THIS REGULATOR IS NOT FOR USE IN CARAVANS AND MOTOR CARAVANS


So What the blithering heck is it for? And just what have I bought
Incidentally it's a Propane Regulator Screw (that's what it says on the packaging)
And I'm assuming that is is ok to use this regulator on that bottle, but just prefer to check with those in the know