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Banging steam radiator

Posted by Harold Kestenholz - Hydronic Network on December 3rd, 2000 01:37 PM
In reply to Banging Steam Radiators by Emer Power on December 3rd, 2000 11:12 AM [Go to top of thread]

1 of 1 people found this post helpful

The radiator may now have a dirt dam inside, or the radiator valve is the wrong one (with a valve seat halfway up inside the valve instead of a special steam valve with the seat at the bottom.)
If the valve is slightly closed, it will keep the water inside also.

If the owner will get a plumber to remove the radiator to look inside and check it all, and it is clean and tilted toward the return pipe, then the pressure can be too high forcing the water to stay up in the radiator. Residential steam systems were designed to operate at about 1 psig, which is high enough pressure to send steam up hot pipes 3000 feet high.

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