I see you’ve read my buddy Jacques’ writing. There’s a lot more interesting pump and hydraulic-related stuff at his site, including home-grown, kitchen video experiments that demonstrate pressure and other neat stuff.
Jacques is a pretty cool guy, a karate black belt instructor but also an engineer. Two out of three ain’t bad.
Uh-oh, I hope he doesn’t kick my ass next time I see him. 
Paul
pipingdesign.com