I have Caleffi TRVs in my office on the wall mounted panel radiators. Here it is.
By the way, the contractor hard plumbed with pex-al-pex and accidentatly switched the connections. So, what happens once in a while is the valve will softly chatter. Annoying. He used no isolation valves, so to fix it, will have to drain the radiator then figure a way to switch the stiff pipe. If he used the Caleffi H-valve shown, the radiators can be easily isolated. The other radiator (not seen here) is piped correctly. Silent too. too.
I have Caleffi TRVs in my office on the wall mounted panel radiators. Here it is.
By the way, the contractor hard plumbed with pex-al-pex and accidentatly switched the connections. So, what happens once in a while is the valve will softly chatter. Annoying. He used no isolation valves, so to fix it, will have to drain the radiator then figure a way to switch the stiff pipe. If he used the Caleffi H-valve shown, the radiators can be easily isolated. The other radiator (not seen here) is piped correctly. Silent too. too.