How to Replace Sight-Glass Tubes on Boilers
The sight glass is a simple instrument, but it provides absolutely critical measurements of water levels for boiler operators. Should the sight glass fail or become damaged in some way, it can provide faulty readings to operators; ultimately, such problems can lead to boiler damage or even cause an explosion if the boiler-feed water level becomes too low. That is why you should be prepared to replace boiler sight glasses as needed.
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