Adding radiators to 1 pipe steam

Steamhead (in transit)

It's a semi-Mills. The new drop riser would pass the new rad, go into the basement and into a wet return, so the flow would be parallel. There wouldn't be any squishing taking place until the pipe got below the new rad, and then it wouldn't matter since there wouldn't be much steam there to begin with (no air vent).

thfurnitureguy_2

Adding radiators

I would like to add radiators to my steam system and have the following questions. My system has the main steam pipes at the celing of the room I am trying to add to. The steam is piped up to apartments above and in other places on the line it is pipped down to this first floor. My question is if it would work to replace an elbow that feeds a single upstairs radiator, with a T, and branch off, and down to the first floor. The EDR on the upstairs unit is 15 and the downstairs to be added would be larger about 45sq.ft. The main is 3" and the tapping off of it is 1.5". I see a number of branches in the piping of the apartments however none that pipe both up and down off the same tapping. I have an oversized boiler at this time so boiler capacity is not the issue. What do you think? Thanks T.

Steamhead (in transit)

A 1-1/2\" riser feeding a 15-square-foot rad

has plenty of excess capacity. Go for it!

gerry gill

capacity yes, but

in my mind, i'm seeing the returning condensate also going down to the lower floor and either hammering or squishing the steam..not to say it can't be done, but i think the elbow stays, and a tee before it on the runout pointing up, and then looping down,would be needed..your thought?

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thfurnitureguy_4

I think Gerry's idea will actually be easyer. I can cut the pipe between the supply elbow and the riser to the upper rad, T up and elbow over and down to the lower floor.

Steamhead (in transit)

If that 15 square foot rad

is the only one on the riser, and the elbow going up into is cast, you can break the elbow with a sledgehammer, screw a tee on in place of the elbow, screw the riser to the upper rad back on, then pipe down to the new rad. This way you wouldn't have to cut and thread any pipe in place while standing on a tall ladder.