Royce asked:- > Well, wouldn't the boiler check valve eliminate the "back pressure" by > closing off the boiler pressure ? So where does the back pressure come > from ?
I believe it is possible to make a check valve which doesn't leak a little, but I've never seen one. The more balls in the system - hand pump, axle pump and check valve have a total of five - the more likely the water is to stay in the boiler. Mike Chaney
