Radiator Valves

[PeterPedro]

Hello all,

I thought I would try balancing my radiators but am stuck at the first hurdle. Each rad has a TRV, as you would expect, but they don't have lockshields. When I unscrewed the cap on the 'other' valve it was identical to the TRV (pin and all). I have never seen or heard of this before.

1) Is this usual?
2) Can I still balance the rads without a lockshield?

Any advice will be gratefully received.

Thanks

 

[D_Hailsham]

Can you post a pic of the "LS" valve (with the cap off)?

 

[PeterPedro]

Cap on and cap off pics[/img]

Untitled

• PeterPedro
• 19 Jan 2012
• 1

Untitled

• PeterPedro
• 19 Jan 2012
• 1

 

[Whitespirit66]

They sound like the type where you adjust the screw cap, according to the flow you want through the rad. Same idea as turning head on standard l/shield.

Screwing the cap right down should turn the rad off. Undoing the cap, allows the valve top open. You won't need to unscrew it much to get a flow through, as the pins don't move much.

 

[Whitespirit66]

Yes, seeing the picture, they are as described in post above.

 

[twgas]

on the black bit that the pin comes through there are a couple of half moon shaped slots, use a small screwdriver to turn the black part and it will shut off the flow, then, obviously, turn the other way to let a bit through and so balance the system.

 

[PeterPedro]

Thanks v much to both of you. Will try that tomorrow.