I saw a boiler from the 1920s still running at a museum in Scranton

I was at the Steamtown National Historic Site in Pennsylvania last weekend, and they have this old Babcock & Wilcox boiler from 1923 that's still under steam for demonstrations. What got me was the sight glass setup. It had three separate glasses in a row, with manual try cocks above and below each one. The guide said they keep it at about 150 psi for the shows. It made me think about how we rely so much on a single modern gauge now, but those old guys had to cross-check everything by hand. The sheer thickness of the steel in the firebox door was something else too. Has anyone here ever had to work on or maintain a boiler with that kind of old-school, multi-glass water column? I'm curious what the biggest headache was.

2 comments

2 Comments

lisa67111d ago

That's wild they still have it running. Read an article once about guys who keep those old industrial boilers alive, and it said the hardest part was finding people who even know how to read the try cocks properly. All that cross checking sounds like a safety dance, but what do you do when one glass starts to cloud up or crack? Guess you just keep a whole box of spares on hand. Makes you wonder how many close calls they had back in the day before all the single gauge systems.

the_logan10d ago

Yeah, the clouding is the real problem. You learn to tap the glass lightly with a brass hammer to clear the sediment, but if it's etched, you're changing it on the spot. We kept a prepped column ready to swap in under ten minutes, gaskets and all. The headache was always getting a good seal on the new glass without over-tightening and cracking it.