radiator Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[kentman]

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?

[plumbbob]

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

[htg engineer]

Or it could be a drain point on the tail.


htg