Multistage pumps animatics		https://www.youtube.com/watch?v=yce_sNAKitE
Magnetic pumps 			https://www.youtube.com/watch?v=fFXTioC1oJQ

Cavitation explained			https://www.youtube.com/watch?v=ON_irzFAU9c
cavitation valves			https://www.youtube.com/watch?v=ZlrFMmGs_NI
Cavitation valves visualization		https://www.youtube.com/watch?v=vRk1SWucy1s