i have TRVs on my radiatiors but i have lost the retaining caps you put on the TRV top's when you take the radiator off to decorate etc.
my question is , is there a way of "making up" a retaining cap to fit over the TRV when i take the TRV top off, which will hold down and stop the water coming through when the boiler kicks in ???
my question is , is there a way of "making up" a retaining cap to fit over the TRV when i take the TRV top off, which will hold down and stop the water coming through when the boiler kicks in ???