Appreciation of old-time engineers.

Jean-David Beyer

I just figured out how an anti-backflow valve (the kind in the feedwater sytem to household boilers) works, and I think that is really clever. I do not even know who invented that.



I am a train nut, and have figured out how some stuff on steam locomotives work. I was particularly impressed by the Giffard injector to get water into a high pressure (like between 100 psi and 300 psi) steam boiler with no moving parts.



And reading about steam heating systems here never fails to impress me.



We owe a lot to those guys.