2 "designer" column rads fed by tee from single feed?

[Schmoopy]

Evening all, planning on plumbing in 2 column rads into a combi system (only 5 rads on the system, used to be more) and wondering if it's acceptable to tee them both in on one feed and return, given they will be "back to back" on either side of a stud wall?

Room B may be fed through the wall from tee in room A just before TRV for ease of alignment and reduced floor faffery on room B side - otherwise would tee into both rooms "under floor" if space allowed - my thinking either way is they would behave as "one big rad" in this respect, so hopefully no flow issues if lock valves are equal, otherwise could tweak the valves differently on each side if needed?

Aim is to save effort and having to chop into the main pipes more than once - would this be acceptable?

Have attached a horribly crude diagram of how I envisage it... thanks for any feedback!

 

[Justin Passing]

Fine, assuming both rads are about the same size/output. Probably also if they aren't. A combi pump can supply a load more than 5 typical rads so you aren't struggling for pressure - the extra bit of pipe won't matter, you'll just have rad A's lockshield slightly less open than rad B's so they balance. "Ish". If they're near the pump in the combi they may only need to be 1/8th of a turn or less open, to get the rest to work.
Your TRVs may be Bi-Dir but put them on the flow, they work better.

 

[Laurieo]

Watch out the radiators don't need the flow to a specific side ,some of these column rads have a baffle inside .

 

[Schmoopy]

Good shout, gents. Thanks.