Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 407
o enable its connection with any boiler beingshut off if necessary. The return pipes of the various boilers should be connected to a commonreturn line, with stop valves for each boiler. A check valve should be placedin the return line on the building side of the branches to the boilers as shownin… … =1 N\^^^^ T\tTOH,).( Pipe. - Fig. I.—Arrangement of Returns with Equalizing Pipe. should not be any check valves in the branches to the boilers, since the returnpipe acts as an equahzer below the water line and should afford a free con-nection between the boilers at all times unless the special…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-401-252.webp)
