Orifices and gravity hot-water heat

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Orifices and gravity hot-water heat

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ARsales1

Dan,
I thought I was the only stupid one in the room. I feel like it now looking back at some of those older homes where I never figured out about the orifice and suffered grief.

Thanks for sharing your stupidity.

A Near Stupid Wethead Brother

DanHolohan

Happy to help! I do stupid with the best of them. ;-)

Henry

This is a very large building that used to be the Nortern Electric plant. 8 plus floors and is a one pipe gravity system. It had a power plant that had 4 mains going to the top floor ceiling. Each one would split in two opposite runs. Each run would feed several feeder pipes that went down to a similare setup in the basement. At each floor were two special 'Y' one would point down the other up which would feed a large cast iron radiator. Inlet into the top of the radiator and return from the bottom of the radiator into the single pipe.

jumper

Gravity works for more than three floors with overhead distribution,as Henry points out. What I don't understand is why so many of these Cadillac systems were one pipe? Water must be pretty tempered by the time it reaches first floor.