The hollow jet nozzle achieves the same benefits as the launch jet nozzle III, but with considerable savings in flow, and, thus, energy.
The water jet, being hollow, requires less power in a pump than its equivalent in launch jets, which means significant energy savings in operation due to low power consumption of the pump.
In short, with this nozzle we reduce the cost of installation of the decorative fountain, as well as its subsequent operation.
The main body of the nozzle is made of AISI 304 stainless steel and is sold with or without an external ball and socket joint.
Thank you Rowen Atkinson for letting us publishing the picture of your authorship.