Can someone tell me what this does

[Laura Hardy]

This is on my bathroom radiator and I think it's been twiddled with. What does it do and what is the best setting for it.

I think its been moved because the arrows were in a different place and I have know idea which way it has been turned.

 

[SimonG]

Wheel head radiator isolation valve.

 

[leelister6]

If you turn the valve in the direction of the + symbol the temperature increases and will cool down if you turn it in the direction of the - symbol. Hope this helps

 

[Laura Hardy]

If you turn the valve in the direction of the + symbol the temperature increases and will cool down if you turn it in the direction of the - symbol. Hope this helps

That's great thank you. That's exactly what I needed to know.

 

[ShaunCorbs]

Cold towel rail any thoughts - UK Plumbers Forums | Plumbing Advice; Plumbers Talk Forum

So here goes. My bathroom towel rail is cold. All other rads in the house are hot and on both upstairs and downstairs. The feed pipe going into the towel rail is nice and hot but the rail itself is cold. It's has a teeny weeny bit of temp change for about an inch along the bottom rung but...

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