One radiator not heating up

Eddie M

My radiator in the kitchen is not heating up. it is a one pipe steam radiator. i followed the pipe in the basement from the boiler to the kitchen. i would say its about a 7 foot pipe. the pipe took along time to heat up as the rest of them were hot already. i say only half the pipe was getting hot. Can the pipe be clogged if so how can i clean it? Can the steam pressure be too low also?

John S.

the first thing to check would be if the air vent needs to be replaced.

Eddie M

i did change air valve, sorry forgot to post that

John S.

Another thing to check would be if you have sufficient venting at the end of the steam main. Measure the length and diameter of the pipe and some folks here will be able to tell you what you need.

thfurnitureguy_4

Sorry if this is too simple but did you check if the valve is all the way open? they do get stickey when old. Will it heat if the vent is removed? Where is it along the main, at the front by the boiler, middle or end of the run?

Eddie M

the pipe connects to the end of the main. the one right before it heats up fine.

thfurnitureguy_4

Do you have main vents?