Inexpensive SANHA gas press fitting, socket Cu 15mm copper, No.10270 , € 7,35
Gas - Wasser Pressfitting, Kombifitting Übergangsstück I/AG 15 mm x 1/2" Kontur V : Amazon.de: Baumarkt
Pipetec Press Fitting Coupling Transfer 26x3 mm 3/4 Inch Internal Thread TH Contour Composite Pipe, Certified According to German DVGW Profile : Amazon.de: DIY & Tools