DIY Doctor UK DIY Forums

Posted: **Wed Feb 03, 2010 5:04 pm**

can some one tell me on a radiator i have a
Thermostatic Radiator Valve on one end and a a alan key the other end whats the alan key for?

Posted: **Thu Feb 04, 2010 6:54 pm**

I would guess this is a tamperproof lockshield valve. Once set it should not need altering again.

Posted: **Sat Feb 06, 2010 1:22 pm**

Or it could be a drain point on the tail.

htg