tecuro Screw fitting set (2 pieces) for water meters and other pipe components such as pressure regulator, filter, etc. 1 inch union nut x 3/4 inch external thread : Amazon.de: DIY & Tools
Compression Fittings Brass Equal Threaded Tee
Pack of 10 Compression Rings for Brass Fittings Compression Fitting (Outer Pipe Diameter: 16 mm) : Amazon.de: DIY & Tools
CORNAT TEC386203 T Piece Brass Chrome 1/2ETx1/2ITx1/2IT – BigaMart