ryan. wrote ...

Hi,

My young cousin snapped the tap of a radiator (in a rented student
house)

Ryan

Is there a valve at the other end of the radiator? It may have a plastic
cover over the gubbins, secured by a screw at the top, which can be removed
to reveal a square-ended shaft - apply small adjustable spanner and turn in
a clockwise direction, if it's not seized (if it is, try turning it
anti-clockwise to free it up)

Dave H.
(The engineer formerly known as Homeless)