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Rookie to steam - don't laugh!
Just bought a foreclosed 1880's 2-flat in Chicago with what I have just determined is a one pipe steam system. It has a relatively new Weil McLain boiler.
Closing on the house tomorrow, fired up the boiler yesterday and everything seems fine.
However, where the 1 1/2" main returns to the boiler room, it has a vertical T. The leg going down feeds the boiler return. The leg going up has been totally broken off (I am literally looking at a broken 1 1/"2" x 3/4" bushing that I need to carefully break out). I presume that this is the location of the main vent. What do I get for the main vent? Available at a good plumbing supply house? Also, should I install a y-strainer as well?