Replaced two Radiators, been told we now need to replace pipes feeding radiators…

[IanM18]

Another question time (sorry) I was reading that the ideal temp difference between the in and out should be 12 degrees?

So if going in, it’s say 58, and coming out it’s 32, is that within normal range, or would I open or close the lockshield a bit to adjust?

 

[terryplumb]

Close down the lockshield ,a little at a time ,to achieve the temperature differential

 

[IanM18]

Thank you!