Is The Safety Valve Actually Bad?
“Our safety valves keep popping. We’ve had a contractor replace them, but they keep going bad.” It was late on a Friday afternoon and the boiler operator was angry. “We n...
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Archive for June, 2019
Which Came First: Steam or Hot-Water Heating?
Mr. Alfred G. King, it’s so good to hear your voice, even though you’ve been dead for quite some time. Thank you, sir.
G.M. Davis Air Valve Patent (1889)
On June 11, 1889, the G.M. Davis Regulator Company of Chicago, Illinois patented the Victor No. 2, an automatic air vent for steam radiators. It worked by the expansion o...