gas4you said:gas4you said:If you have 'straight trv's' fitted to tall rads for looks then not many makes are available that are bi-directional
Not certain that if they are straight valves that TRV 4's are bi directional. Sounds iffy if ony one arrow on valve body and its pointing against the flow
you`re right gas4you straight trv4`s are not reversible flow!
get your plumber to swap the trv`s with the lockshields, job done!