In message , Vortex12
writes
In New Year will be replacing an ancient heating system in a flat.
Total 8 radiators with all the piping logically coming back to a single
central point.

I am thinking an 8 way UFH manifold (John Guest) would make a very
elegant solution at this location.

Of course flow temperatures may be 60+ degrees, whilst normal UFH
temperatures are much lower.

Can anyone reason not to use this approach?

You will need to wire in thermostats and use the control valves to give
individual room temperature control.

One issue is the bathroom where using conventional stats may breach the
zone rules.

I'm still at the laying the pipework stage so haven't got to grips with
the temperature control range of the valve used to supply the manifold.

Towel rails?

Boiler overrun bypass?

--
Tim Lamb