Shower system series hansgrohe croma select finish chrome white operation two handed shower mixer functions quantity limitation anzahl der strahlarten 2 features anti calc system swivel ball joint korrosionsschutz hansgrohe quickclean anti calc function installations two hole installation wall installation nominal connection width dn 15 diameter of connector 12 inch flow 3 bar pressure 16 lmin minimum flow pressure 15 bar maximum flow pressure 10 bar