Recent content by YamiPrem

Okay, now I'm catching on. I keep forgetting there is cold water sitting in the system when heating is off. So are radiators built in a way that if return end is shut off on a radiator, the water can not leave on the flow valve? The water must only travel one direction through the radiator...

That's the bit I don't understand. How is it stopping the flow if it's on the return end? The flow end will still allow hot water to enter the radiator, no?

Hello all, I'm new to the forum and joined to specifically ask this burning question as I couldn't get my head round it. I understand that bi-directional TRVs exist nowadays that can work on either flow or return side of a radiator. Now, I totally can visually imagine how TRV works when on...