Hi all ! I currently in the process of retrofitting an old process line in which I require the outlet pressure to be 1.5 bar. The design just includes an open tank connected to a pump as shown in attachment. The water level of the tank is leveled with the pump outlet. The pump is currently operating to produce an outlet flow of 33 LMH in a 1.5 in pipe. By using Bernoulli's Equation, shown in attachment as well, I can't seem to increase the pressure by either manipulating outlet flow or reducing pipe size. I sincerely hope you guys can help by pointing out my mistake and a solution to increase the outlet pressure ? Thank you very much for your kind assistance ! ..