Steam boiler sight glass repair or replacement: this article describes how to fix a leaky or broken steam boiler sight glass to obtain an accurate reading of the water level in the boiler. We discuss emergency steps such as simply shutting off water into and out of a leaky sight glass as well as sight glass replacement.
The steam boiler is an old convection heating technology dating back over 200 years and is commonly found in older homes. Because steam boilers operate at a higher temperature than hot water boilers they are inherently less efficient than their hot water cousins. They are also a lot more finicky to operate.
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Boiler Expert Steven Taylor reviews proper procedure for cleaning the sight glass of a low pressure boiler. Fixing a leaky or broken steam boiler sight glass helps obtain an accurate reading of ...
Guide to the Steam Boiler Sight Glass. The steam boiler sight glass or water level gauge allows the building owner or maintenance person to monitor the required water level in the steam boiler. A mark on the boiler body indicates the desired normal water level and a sight glass shows the current water level. [Click to enlarge any image]
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