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I've been going through posts and had to ask:
I have a roughly 12" high x 7' long radiator that isn't a standard rib cage design. Its in 3 sections (solid with ribs on one side) and is on my first floor. My boiler is 8 years old. I have a "D" valve on it (just put a new one this season) because I've read so many contradicting opinions on location vs. size of radiator to valve size, but this year it doesn't seem to be getting that hot. I spoke with an older plumber in his late 70's who advised me to chart out my steam system to figure out what is first in the chain but the feed splits from my boiler so theres no linear direction. It does seem like its the last one on the floor to heat up (guessing due to its size).
I have noticed some condensation on top of the valve.
Before the season I had my boiler serviced. It was cleaned and I had the boiler detergent used to clean it out.
I mud and drain the system every couple of days from the boiler and return (my boiler has a sensor and automatically refills). This is my first home with a one pipe radiator system, so it's a learning process that I'm thoroughly enjoying but this one large unit has me vexed.
Any help would be greatly appreciated!