Steam Boiler Sight Glass Lies! (But It's Not It's Fault)


Many thanks to Gordon Schweizer of All Steamed Up, Inc. for sharing his knowledge and this video. You can subscribe to Gordon's YouTube channel here. He says:

If your sight glass fittings are clogged with rusty sludge, the sight glass can't tell you the true amount of water in your steam boiler. Therefore, your boiler could dry fire and that is a bad day for you. Or your boiler could be flooded and that is not quite as bad a day, but still not fun.

By adding a proper drain valve as a truth teller, and a short length of hose leading to a bucket, and periodically opening said drain valve every so often, you can keep your sight glass and the fittings


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