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I have been in my 1923 house for a year and noticed that my 2 pipe steam system has no connection between the mains and the dry returns. The ends of the mains appear to just be capped off but are very near the start of the dry returns which also appear capped. The pipes and caps all appear very old. Of course I can not find any F and T traps as well.
System seems to work so so, with relatively quick heat up, but radiators rarely get hot all the way across, and upstairs always much cooler than first floor, though that may be a factor to the inadequate attic insulation.
My question is whether this is a problem or just a different system than I have read about? Also, the thermostatic valves on the radiators appear to be the originals in most cases, and I have Dunham packless lever handles on most of the radiators.
I can get pics if helpful.