I purchased a couple pipe fittings for a pump today. I eyeballed them at 1" and then at the Brico I eyeballed again and picked the 26 x 34 (they did have a 1 cast into the fitting body of one fitting). They fit just fine.
Does anyone know what the two numbers refer to? Is it the inside and outside diameter? Are the threads metric or are they something unique to France?
And a related question. I need a 1 1/4" F (eyeballed) to 1" F reducer. The 2 Brico’s here only have up to 1" fittings. Is there such a thing as a plumbing supply store for DIY in France or am I resigned to calling a plumber?