My radiators have some TRVs installed on the flow pipe, and some on the return. Lockshields are on the other end of the rads.
Is this OK?
I believe the TRVs *should* be on the flow pipe.
But *must* they be on the flow?
You can get bi-directional TRVs that can live on the flow or return, so i guess its not too important.
Last question, one TRV is producing a "shuddering" noise when it stops the flow. Is this because it is broken, or on the wrong end of radiator (or possibly both) and needs replacing?
thanks for any info.
IA