2 Radiators branched off 2" main steam line

MarkZeh

Heating Help steam guys, quick question for best piping layout for new re-routing of steam rads from reno job. Previously had a single rad, ~6480 Btus piped with 1-1/4" from 2" main then reduced to 1" steam valve. New slightly larger Rad, ~7680 Btu, is to be installed about 4 ft to the right from the original with an additional new rad installed to the left, ~3840 Btus. I am planning of 'T-ing' off from the 2" main line port with either 1-1/4" or 1-1/2" pipe then pipe to rads. Just want to make sure that I will have sufficient steam to both radiators. Any insight or suggestion?

Many thanks for all comments.

Mark Z

Jamie Hall

The problem isn't sufficient steam — you'll likely have that with the 2 inch main runout — but it is the pitch of the pipes from the T to the radiator. Both of them must pitch back to the T. They will need about a half inch of pitch for the four foot runs… and getting both of them to pitch back to the T just might be a bit tricky?

MarkZeh

Jamie, thanks. Hear ya clearly. Think I should be OK since the 4' run will consist of 2' to the right then another 2' forward. An L. So I prob will get some OK pitch from the T but more/better pitch going towards the rad itself. Any thought on 1-1/4" or 1-1/2" piping? Original from main line T was 1-1/4"

Thanks

JUGHNE

This is where swing 90's or 45's come into play to get the slope needed. And also to correct the riser to get it plumb to meet the rad valves.

EBEBRATT-Ed

I would avoid teeing two radiators of 1 man tapping. This can lead to problems.

I am not saying it can't be done but it will be easier if you have 2 supply main tees.

I suspect you do not want to cut another tee into the main.

If that is true you should rethink this.