I wanted to make a backup generator using a small pump as the valve (if there is no electricity - is waterproof). But I notice that the small pump is really bad pass water, even in comparison with the usual pipe. When I spend a water through the little pump work only 4 steam engine, and when through the pipe - all 16.
But I remember that in the early releases (11.xx) everything worked fine.
Water pressure throw the small pump
Water pressure throw the pipe
Water pressure throw the small pump in logistics system
P.S. I read changelogs from 0.12.0 to 0.12.20 and not found some changes in small pump works.P.P.S. I'm sorry for any errors, i'm not english speaker.
