broken TRV

[nobackwheel]

Hi, I have a drayton head from a rad downstairs. It has broken off - vacuuming i think! Is it just a case of buying a replacement head for the valve, and attaching it the the top of the valve?

If I take the old head off, won't the water leak through - as the valve won't be shut off?

thanks

 

[twgas]

you can take the old top off, just unscrew the big knurled nut. Once the top is off check the pin moves freely (push it down with a suitable tool).

 

[nobackwheel]

that's what I hoped to hear - i presume the pin being in an 'up' position is effectively keeping the valve in a closed position?

when i put the new one on, does it need to be in an off/on position - does it matter?

thanks for the quick reply

 

[twgas]

No, pin up is on, you need the head set to max to fit it to body

 

[nobackwheel]

is the pin part of the head/big nut and not the actual t valve then? I just assumed that you had to shut off the rad otherwise water would come through.

so to clarify - undo big nut, replace head in a full on position?