The hydraulic ram / water hammer pump seems like a more elegant solution to me. https://en.m.wikipedia.org/wiki/Hydraulic_ram https://en.m.wikipedia.org/wiki/H

The hydraulic ram / water hammer pump seems like a more elegant solution to me. https://en.m.wikipedia.org/wiki/Hydraulic_ram https://en.m.wikipedia.org/wiki/Hydraulic_ram