Johnson Controls VA-7150-1001 Electric Actuator, 35" lb., Floating, 24VAC

This product is just not worth it. They're unbelievably loud and don't actually do their job all too well. I don't know a lot about radiators, but I do know that my room varies by 20 degrees on any given day. If it's the actuators job to regulate heat, this one is one of the worst I've seen. And have I mentioned how incredibly loud this thing is. I could use it as an alarm clock if it would stay quiet long enough for me to actually fall asleep. Anyways, not that great, way too expensive