Monoflo tees

Knots

I have a single zone, two main , single return monoflo system.
My question is, if a radiator or baseboard unit is removed from service, should the two tees that fed it be piped together so as to not unnecessary restrict the flow in the main?

STEVEusaPA

If you mean should they be removed, then yes.
As a side note, it doesn't matter but both may not be monoflow tees, but you are removing them anyway.

Knots

I was thinking about running a proper sized pipe from the output tee to the return tee. Looks like that would restore flow.

Brewbeer

you can do either, but removing the 2 tees completely will reduce head in the system.

EBEBRATT-Ed

either way is fine

delta T

I typically find it easier to cut out the tees entirely. Saves someone else from being confused later too if the branch piping ever gets concealed....