TRV's for one pipe central heating system

[james7777777]

Hi,

I am fitting new radiators to my house which has a one pipe central heating system. Ive seen a few websites that say I need either full bore TRV valves fitted OR special one pipe TRV valves. Can anyone offer me some guidance? Also where exactly do you get these valves from - Ive been to all the DIY shops & screwfix but they just stock standard TRV's?

Thanks

James

 

[erj]

I have come across a one pipe system with normal trv,s and they worked ok, but removef one off a rad and the rad got a lot hotter!