In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I'm new to steam heat. I'm doing some work in my house, and made a simple 3D model to help me understand the system. It's a one pipe system. Please see attached picture.
The red pipes are the main supply pipes from the boiler. These are run along the ceiling of my basement. The yellow pipes are the riser pipes running to each of the radiators in my house (some on first floor, some on second floor).
What are the green pipes?
I thought steam and condensate use the same pipes in a one pipe system. So what purpose do the green pipes serve? Parts of the green pipes are below the water line of my boiler, so they are always full of water. Why not just eliminate them and have everything run through red/yellow pipes?