The center straight up nozzle is installed with many universal DC nozzles on the same water distribution tank. When these nozzles have the same specifications, the water sprayed out is majestic and straight; When the specifications of these nozzles are not exactly the same, the size of the nozzle is properly arranged, and the water sprayed is thick and powerful, with clear layers and prominent themes, making it the essential main nozzle for large fountains. This nozzle is also known as the central water column.