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Pressure valve question

LEADPIPE
Member, Email Confirmation Posts: 5

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Sorry, lasts about 30 minutes.0
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That thing is actually called a vent, not pressure valve, and its job is to let air out of the radiator when the steam is trying to come in. It should close when steam hits it. If it lets steam out, it may be partly failed, or weak -- but if it stops after a bit it may be doing the best it can.
It is likely that the steam pressure in the building is way too high -- very common in apartment buildings in New York -- and over the years we've kind of found that it's pretty hopeless to get the landlords to turn it down to where it should be...Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0
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