Does closing one radiator impact another?

Brad White

I have never seen radiators piped in series (with certain exceptions of coupled long wall radiators) and never a series of standing CI radiators.

So, for the moment, I would take it that you really mean two radiators off of a main in parallel with one-another.

Shutting off one of them (assuming two) will marginally affect the other. The pressure available to both when both are open is pretty much the same, it being so low. Shutting off one will cause a very slight increase in available pressure (due to lower flow, static pressure increases) but probably not enough that you would notice.

If the riser in question was marginal to begin with, say sized for one but serving two, you will have a more obvious contrast. But if sized properly for both? No perceptible difference to my mind.

dcha

Does closing one radiator impact another?

I have single line steam radiators. I'm wondering if steam needs to travel through one radiator to get to another. Let's say radiator A and radiator B are connected to the same main. Will turning radiator A off prevent steam from traveling to radiator B? My intuition tells me no, but I wanted to make sure. Sorry about all the newb questions but we all started somewhere right?

Daniel_3

Your intuition is right. It will change the balance of the system but that rad if vented well enough will do it's job.