Water Jumping in Steam Boiler


Old 03-25-07, 06:32 PM
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Water Jumping in Steam Boiler

What could be the causes of water jumping and making noises in my girlfriend's steam boiler? This natural gas fired little one pipe steam boiler has the proper amount of water in the system, but once it gets hot, you can really hear it boiling and the water in the water level tube bounces around.

What is the source of the problem and what might be the solution?
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Old 03-25-07, 06:40 PM
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The problem is caused by dirt, rust, oil or other corruption in the water. If this has been going on for a long period of time the boiler could be in danger of failing in the not too distant future.

Steam boilers MUST be "blown down", that is, have a quantity of water flushed out, on a regular basis. This is determined by the quality of the original water and the amount of "make-up" water that is added (automatically if the boiler has a feeder) over a set period of time.

I would let the boiler cool then drain ALL of the water from it, refill and drain again. After that if when in normal operation you may "blow down" a quantity (not all) of water at least once a month to maintain the system.

If draining and flushing doesn't alleviate the problem you will need to resort to more drastic measures.
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