So I posted yesterday about appropriate pumps for pumping water out of a ballast tank in a manned submersibles at a depth of 1000m. I decided to switch to an axial piston pump. I got that the require pump head is approx. 410 m and the required power input provided by the pump is approx. 18 000W. My inlet diameter is 2.6 cm and my outlet diameter is 2 cm. What would be a good axial piston pump I could use? Thanks!