The noise is most likely coming from the valve body (the metal part that the water flows through) and not the Genius Radiator Valve. It is making a noise because it is on the out-flow side of the radiator rather than the in-flow side, and it is a non-reversible valve body. This problem might not have been apparent before you fitted the Genius Radiator Valves, because your old TRVs were not closing the radiators down properly. This is because the wax in traditional TRVs ages and no longer works properly, leaving the valve fully open or fully closed most of the time. The vibrating happens because the flow of water should be coming in from under the valve when it is on the 'inflow' side of the radiator, and this pushes the valve pin up against the valve head. When it is orientated incorrectly the flow is over the top of the valve and there is nothing to stop it closing completely apart from a small spring inside the valve body. Because the Genius Radiator Valve controls the pin to a very high degree of accuracy, it is often hovering around the very slightly open position of the pin, and if oriented incorrectly the valve body opens and closes at a very high speed and this is cause the valve to vibrate and make the noise you can hear. There are several possible solutions to this:
Overview
Content Tools