Our blue PE-Tanks are always delivered without connections. Of course, you can also install connections in ¾ inch to 2 inch with our plastic accessories in the intended connection fields. These are located at the top (usually inlet) and bottom (usually outlet) of the respective tanks. If no connection fields are available, e. g. RPRK, RPRKH, RPRKV, you can also install accessories in all desired places likewise on the semi-transparent water tanks.